MARY K O'BRIEN (MD) – Family Medicine Physician, NPI 1952317927

MARY K O'BRIEN (MD) is a healthcare provider. based in Tacoma, Washington. specializing in Family Medicine Physician. They hold the professional credentials MD. They hold a License No. MD00029537 (WA). The NPI Number for MARY K O'BRIEN (MD) is 1952317927

Main info

Female
42 Years Of Experience
Accepts Medicare Assignment
Name
MARY K O'BRIEN (MD)
NPI
1952317927
Phone
(253) 459-7970
Address
PO BOX 5299
Enumeration Date
31 July 2006
Last Update Date
8 July 2007

Doctor Profile

Medical School Name
UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Secondary Phone
3608954700
Graduation Year
1984 (42 years ago)
PAC ID
8022024769
Group Practice PAC ID
4284542663
Professional Enrollment ID
I20060303000602
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

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Provider Addresses for MARY K O'BRIEN (MD)

  • South Tacoma Post Office, South 56th Street, South Tacoma, Tacoma, Pierce County, Washington, 98409, United States

    MS: 737-2-PHYS

    TACOMA, WA 984150299

    Phone: (253) 459-7970

    Type: Mailing

  • MultiCare Tacoma General Hospital, 315, Martin Luther King Jr Way, Tacoma, Pierce County, Washington, 98403, United States

    TACOMA, WA 984054234

    Phone: (253) 403-1000

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

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No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

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Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 98415)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 4284542663View full group profile
NameSpecialtyState
MELISSA AYN MEYER (M.D.)
-WA
DR. VIRGINIA COMPERE (MD)
-NM
SYLVIA THOMAS (M.D.)
-WA

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Frequently asked questions

What federal number belongs to MARY K O'BRIEN (MD)?
The federal identifier for MARY K O'BRIEN (MD) is NPI 1952317927.
Is MARY K O'BRIEN (MD)'s enrollment marked active?
An active flag here means the NPI record is not in a deactivated state.
Can you summarize MARY K O'BRIEN (MD)'s specialty in plain language?
Clinically, the directory lists MARY K O'BRIEN (MD) with Family Medicine Physician. Clinical services aligned with this taxonomy classification.
What location metadata exists for MARY K O'BRIEN (MD)?
The page summarizes Tacoma, Washington for MARY K O'BRIEN (MD); expand the address list for detail.
What if Tacoma, Washington seems incomplete?
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