Margaret Mary O'Brien
Currently registeredMargaret Mary O'Brien is an attorney admitted to the New York State Bar in 1987, with a registered practice address in New York, New York. According to the New York Office of Court Administration, the current registration status on record is Currently registered.
| Registration number | 2107522 |
|---|---|
| Bar status | Currently registered |
| Year admitted | 1987 |
| Judicial department | Department 2 |
| Law school | Fordham |
| Practice city | New York, NY |
| County | New York |
| Firm / organization | Marsh & Mclennan Companies |
| Office address | 1166 Avenue Of The Americas, New York, NY, 10036 |
| Phone | (212) 345-5120 |
| Next registration due | Nov 2027 |
About Marsh & McLennan Companies, Inc.
Marsh & McLennan Companies, Inc. is a publicly traded professional services company headquartered in New York City. It now uses the single brand name Marsh, following a brand change effective January 2026 that the company describes as a change to brand strategy rather than business structure. Its businesses cover insurance brokerage, risk management, reinsurance services, talent management, investment advisory and management consulting, and its four named businesses are Marsh, Guy Carpenter, Mercer and Oliver Wyman.
Practice areas of Marsh & McLennan Companies, Inc.:
These are the practice areas the organization describes on its website. They are not a statement about Margaret Mary O'Brien’s own practice or any specialty certification.
View the Marsh & McLennan Companies, Inc. profile and its 36 registered attorneys →
Office location
Registered office address on file with the New York State Bar. Verify before visiting, as the address reflects the contact on record and may be a firm rather than a personal office.
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Bar status can change at any time. For the authoritative, real-time status of Margaret Mary O'Brien, confirm directly through the official New York Attorney Search using the registration number above. This record is republished from public New York State data and is provided for reference only — it is not legal advice and not an endorsement.
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