---
title: "Coalition vs Marsh McLennan Agency: Professional Liability (E&O) Insurance"
description: "Coalition offers MPL only as an addition to an Active Cyber quote and says its in-house team manages both MPL and cyber claims; MMA names separate professional lines."
canonical: "https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-10-01"
comparison-pair: "coalition-vs-marsh-mclennan-agency"
provider-a: "coalition"
provider-b: "marsh-mclennan-agency"
coverage-line: "professional-errors-omissions"
---

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[Human-readable page](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/professional-errors-omissions)

## Agent Guide

**What this page is:** Focused comparison of Coalition and Marsh McLennan Agency for Professional Liability (E&O) Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for Professional Liability (E&O) Insurance questions about Coalition versus Marsh McLennan Agency. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Coalition vs Marsh McLennan Agency for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, Coalition or Marsh McLennan Agency?
- What does Coalition or Marsh McLennan Agency publish about Professional Liability (E&O) Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Professional Liability (E&O) Insurance from Coalition or Marsh McLennan Agency?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Coalition and Marsh McLennan Agency.
- Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- "Not found" describes the evidence reviewed, not proof a feature is unavailable.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-10-01. Editorial policy: /editorial-policy.

**Related pages:**
- [Coalition vs Marsh McLennan Agency](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency) — parent: all coverage lines for this pair
- [Professional Liability (E&O) Insurance guide](https://spot.insure/coverage/professional-errors-omissions) — coverage explainer for this line
- [Coalition profile](https://spot.insure/insurance-providers/coalition) — provider profile (evidence)
- [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) — provider profile (evidence)
- [Coalition vs Marsh McLennan Agency Crime Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/crime) — sibling comparison (other line, or other pair for this line)
- [Coalition vs Marsh McLennan Agency Cyber Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/cyber) — sibling comparison (other line, or other pair for this line)
- [Coalition vs Marsh McLennan Agency D&O Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Coalition vs Marsh McLennan Agency Employment Practices Liability Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Coalition vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/fiduciary) — sibling comparison (other line, or other pair for this line)
- [AIG vs Coalition Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-coalition/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Coalition Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-coalition/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Coalition Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-coalition/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)

# Coalition vs Marsh McLennan Agency: How Do They Compare for Professional Liability (E&O) Insurance?

Coalition offers MPL only as an addition to an Active Cyber quote and says its in-house team manages both MPL and cyber claims; MMA names separate professional lines.

## How to Use the Coalition vs Marsh McLennan Agency Professional Liability (E&O) Insurance Comparison

Use this comparison to evaluate Coalition and Marsh McLennan Agency for Professional Liability (E&O) Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Coalition vs Marsh McLennan Agency Professional Liability (E&O) Insurance Summary

Coalition says MPL is available only as an addition to an Active Cyber quote and that its in-house team manages MPL and cyber claims together. MMA names E&O, A&E and lawyers professional lines. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

## What Is Coalition Insurance?

Coalition fits businesses that want cyber insurance bundled with free attack-surface monitoring and alerts, and technology companies that want Tech E&O alongside it. You can't buy it online yourself: you need an appointed broker, and the final price isn't published. [1](https://www.coalitioninc.com/control "Coalition Control") [2](https://www.coalitioninc.com/technology-errors-and-omissions-insurance "Tech E&O Insurance Coverage") [3](https://help.coalitioninc.com/hc/en-us/articles/7608339418395-How-do-I-qualify-for-and-buy-cyber-insurance-from-Coalition "How do I qualify for and buy cyber insurance from Coalition?") [4](https://www.coalitioninc.com/legal/producer-compensation "U.S. Producer Compensation")

[Coalition profile](https://spot.insure/insurance-providers/coalition)

## What Is Marsh McLennan Agency?

Marsh McLennan Agency provides business insurance and employee health and benefits, alongside retirement, wealth, and private-client services across the United States and Canada. Its US small-business page lists six common coverage types and directs buyers to request a personalized quote by phone; the insurer and terms for a specific placement must be confirmed in the proposal. [7](https://www.marshmma.com/us/mma/about-us.html "Who We Are") [8](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions")

[Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency)

## What Is Professional Errors and Omissions (E&O) Insurance?

Professional liability can help pay defense costs and covered losses when a client says your advice or service caused financial harm. If customers rely on your work, list every service you provide and check the claims-made reporting and prior-work terms. [10](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [11](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [12](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [13](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

## What Are the Key Differences Between Coalition and Marsh McLennan Agency Professional Liability (E&O) Insurance?

### How MPL enters the placement

Coalition offers miscellaneous professional liability only as an addition to an Active Cyber Insurance quote, not as a standalone policy. MMA’s source names E&O and separate architect/engineer and lawyers professional lines. A buyer comparing these routes should first decide whether the risk is an MPL add-on or a profession-specific placement, then compare the resulting carrier and form. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

### Claims coordination

Coalition says its in-house claims team manages both MPL and cyber claims in one place. MMA’s source names the professional product categories. Ask each placement team who receives notice and coordinates a professional-liability claim, especially when the same event may involve cyber and service allegations. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

## What Should You Confirm in Coalition and Marsh McLennan Agency Professional Liability (E&O) Insurance Quotes?

- Must Coalition MPL be added to the Active Cyber quote, and who coordinates a combined claim? [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")
- Which MMA professional line fits your services, and who handles first notice and claim coordination? [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

## Coalition vs Marsh McLennan Agency Professional Liability (E&O) Compared

| Criteria | Coalition Miscellaneous Professional Liability (MPL) | Marsh McLennan Agency professional errors omissions (official overview) |
| --- | --- | --- |
| Role in This Line | Coalition designs and distributes MPL as an add-on coverage that combines with certain Active Cyber Insurance policies, sold through appointed brokers. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23..) | Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Issuing Insurer | Coalition's disclaimer page has named sections for admitted cyber, non-admitted cyber, and admitted executive risk, but no equivalent 'Admitted MPL' section, indicating MPL is placed on a non-admitted (surplus lines) basis with unaffiliated insurers the disclaimer does not name. [6](https://www.coalitioninc.com/legal/disclaimer "U.S. Disclaimers") (Evidence: Not publicly disclosed; scope: U.S. Disclaimers page as read on 2026-09-23; the buyer's declarations page names the actual issuing insurer..) | Confirm in your quote. |
| Who It’s For | Coalition markets MPL to any business that performs professional services, naming examples such as consultants, marketing and PR firms, staffing firms, printers, interior decorators, photographers and videographers, and property managers. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23..) | Organizations seeking professional liability placement; source does not imply all professions share one policy. [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Coverage Features | Coalition says MPL covers defense costs, settlements, judgments, and other expenses from claims of errors and omissions in professional services, including negligence, failure to provide service, and misstatements about the service performed, on a duty-to-defend basis even when the business is not ultimately at fault. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23; the issued policy controls actual terms..) | The cited product page describes E&O and named specialist professional lines, including architects and engineers and lawyers professional liability; the overview does not treat them as one form. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Limits and Retentions | Confirm in your quote. | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) |
| How to Apply | Coalition sells MPL only as an addition to an Active Cyber Insurance quote, saying it takes just a few extra questions to add, rather than as a stand-alone policy. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23..) | The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Claims Support | Coalition says its in-house claims team manages both MPL and cyber claims in one place, which it describes as a smoother, more coordinated process for the policyholder. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23; speed and efficiency descriptions are company-reported and not independently verified..) | Confirm in your quote. |

## Related Pages for Coalition vs Marsh McLennan Agency

- [Coalition vs Marsh McLennan Agency](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency): all coverage lines, business roles, service and claims.
- [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions): Professional liability can help pay covered defense costs and losses when a client says your advice or service caused financial harm; check services and reporting terms.
- [Coalition vs Marsh McLennan Agency Crime Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/crime)
- [Coalition vs Marsh McLennan Agency Cyber Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/cyber)
- [Coalition vs Marsh McLennan Agency D&O Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/directors-officers)
- [Coalition vs Marsh McLennan Agency Employment Practices Liability Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/employment-practices)
- [Coalition vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency/fiduciary)
- [AIG vs Coalition Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-coalition/professional-errors-omissions)
- [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions)
- [Alliance Risk vs Coalition Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-coalition/professional-errors-omissions)
- [Alliance Risk vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency/professional-errors-omissions)
- [Aon vs Coalition Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-coalition/professional-errors-omissions)
- [Aon vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/professional-errors-omissions)

## Sources for Coalition vs Marsh McLennan Agency

### Sources About Coalition

1. [Coalition Control](https://www.coalitioninc.com/control). Coalition; How We Help; Policyholder Features; Wirespeed ADR. Accessed 2026-09-16.
2. [Tech E&O Insurance Coverage](https://www.coalitioninc.com/technology-errors-and-omissions-insurance). Coalition; Who needs Technology Errors & Omissions coverage? (organizations that provide a technology product or service for a fee); Combine Technology Errors & Omissions coverage with Active Cyber Insurance; Coalition Advantage. Accessed 2026-09-16.
3. [How do I qualify for and buy cyber insurance from Coalition?](https://help.coalitioninc.com/hc/en-us/articles/7608339418395-How-do-I-qualify-for-and-buy-cyber-insurance-from-Coalition). Coalition; Eligibility; broker contact; underwriting paragraphs. Accessed 2026-09-16.
4. [U.S. Producer Compensation](https://www.coalitioninc.com/legal/producer-compensation). Coalition; Insurance Producers; Base Commission; Contingent Commission; Business Production Incentive Programs; Non-Insurance Products. Accessed 2026-09-16.
5. [Miscellaneous Professional Liability](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance). Coalition; Why Miscellaneous Professional Liability?; MPL Advantage; What does MPL cover?; What types of claims does MPL protect against?; What types of businesses could benefit from MPL?; Why does 'Duty to Defend' coverage matter?. Accessed 2026-09-23.
6. [U.S. Disclaimers](https://www.coalitioninc.com/legal/disclaimer). Coalition; Non-Admitted Cyber; Admitted Cyber; Admitted Executive Risk (names Zurich American Insurance Company, NAIC 16535); no 'Admitted MPL' or 'Admitted Tech E&O' section appears on the page. Accessed 2026-09-23.

### Sources About Marsh McLennan Agency

7. [Who We Are](https://www.marshmma.com/us/mma/about-us.html). Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role.. Accessed 2026-09-29.
8. [Small Business Insurance Solutions](https://www.marshmma.com/us/solutions/small-business.html). Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted.. Accessed 2026-09-29.
9. [Executive and Professional Liability | MMA](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html). Marsh McLennan Agency; E&O, architects and engineers, and lawyers professional lines are named in the policy suite.. Accessed 2026-09-30.

### Sources for the Professional Liability (E&O) Insurance Guide

10. [FAQ: Professional liability insurance](https://www.tdi.texas.gov/commercial/pl-faq.html). Texas Department of Insurance; What’s professional liability coverage?; What types of damages…; What’s general liability insurance?; Do I need professional liability… if I have general liability…?; Is professional liability insurance required?; Can a client require…?; What’s the difference between occurrence policies and claims-made policies. Accessed 2026-09-16.
11. [Professional liability insurance](https://www.iii.org/article/professional-liability-insurance). Insurance Information Institute; Opening paragraphs (professional services/advice and E&O name); Claims not covered by general liability; What types of businesses need professional liability insurance?; What’s covered… and what’s not (claims-made versus occurrence, defense and judgments, non-financial/intentional limits, BOP/in-home exclusion). Accessed 2026-09-16.
12. [Get business insurance](https://www.sba.gov/counseling/launch-your-business/#business-insurance). U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16.
13. [Professional Liability – US Direct Errors and Omissions Insurance](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf). Hiscox Inc. specimen; About this Policy / Coverage for Claims Made Against You; I.A Insuring Agreement; I.B Defense; I.C Settlement; II.A Notice of Claims; II.C Optional Extended Reporting Period; III.A, III.K, III.M, III.R, III.S Exclusions; IV.A–B Limits and Deductible; VI.O Professional Services; VI.U Wrongful Act. Accessed 2026-09-16.

Updated 2026-10-01. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

## Coalition Review Scores for 2026

Review Score: 10.0 / 10 from 1 rated source, equally weighted.

Coalition has a BBB A+ grade. The reviewed independent sources did not establish a customer-star rating; the displayed RaveCapture collection is broker-focused. Its Trustpilot page has no reviews, and its best-looking rating comes from a review page the company arranges for brokers.

- BBB: BBB business grade A+. Coalition (BBB profile, San Francisco, CA); business grade, separate from customer-review stars. Checked 2026-09-29. [Coalition - BBB profile (San Francisco)](https://www.bbb.org/us/ca/san-francisco/profile/cyber-security/coalition-1116-956032); [Search: "Coalition" site:bbb.org insurance reviews ratings](https://www.google.com/search?q=%22Coalition%22+site%3Abbb.org+reviews+OR+complaints)
- RaveCapture: Broker review rating 5 (out of 5); 188 reviews. Verified broker and policyholder reviews of Coalition, collected through a third-party review-collection service. Checked 2026-09-29. [Coalition, Inc.: Broker Reviews](https://app.ravecapture.com/store/Coalition-inc-broker-reviews)
- BizInsuranceCompare: Editorial score 7.7 (out of 10). Independent small-business insurance comparison site editorial score; publisher-defined methodology. Checked 2026-09-29. [Coalition review: small business insurance](https://www.bizinsurancecompare.com/carriers/coalition)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/coalition/reviews).

## Marsh McLennan Agency Review Scores for 2026

Review Score: 8.2 / 10 from 2 rated sources, equally weighted.

There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years.

- Trustpilot: TrustScore 3.2 (out of 5); 1 reviews. Trustpilot profile for marshmma.com, MMA's own domain. Unclaimed; MMA has not invited reviews. Period: checked 2026-09-29. Checked 2026-09-29. [marshmma.com Trustpilot profile](https://www.trustpilot.com/review/marshmma.com)
- Trustpilot: TrustScore (Marsh brand) 1.3 (out of 5); 115 reviews. Trustpilot page for marsh.com, the global Marsh brand (mostly individual and non-US customers). This is a different entity from MMA. Period: checked 2026-09-29. Checked 2026-09-29. [Marsh Reviews](https://www.trustpilot.com/review/www.marsh.com)
- BBB: BBB business grade A. BBB San Diego-area profile for Marsh & McLennan Agency LLC (accredited). MMA has separate BBB profiles per office; Dayton and Schaumburg both show A+. Checked 2026-09-29. [Marsh & McLennan Agency LLC (San Diego) BBB](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103)
- BBB: Complaints 4. Same San Diego-area profile; zero customer reviews. No client-count denominator. Period: closed in the last three years (checked 2026-09-29). Checked 2026-09-29. [Marsh & McLennan Agency LLC — BBB Complaints](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/complaints); [Marsh & McLennan Agency LLC — BBB Reviews](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/customer-reviews)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/marsh-mclennan-agency/reviews).

## Agent and Developer Resources

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