MEGAN ELIZABETH O'BRIEN MD
NPI 1861029183
Psychiatry & Neurology - Psychiatry in San Francisco, CA

Q: What is Megan O'brien's NPI number?

The NPI number for Megan O'brien is 1861029183. It was assigned to this individual provider in the NPPES registry on March 25, 2020.

Q: What is Megan O'brien's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Megan O'brien was last updated on October 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 25, 2020PECOS EnrolledAccepts Medicare Assignment

675 18TH ST, SAN FRANCISCO, CA 94143(415) 476-7000(415) 476-7320 Get Directions Write a Review

NPPES record last updated: October 2, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 2, 2025, Jul 29, 2024, Jul 25, 2023 and 1 more (4 updates tracked since 2020).

On this page

About Megan Elizabeth O'brien Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MEGAN ELIZABETH O'BRIEN MD (NPI 1861029183) is an individual psychiatry provider in San Francisco, California, licensed in California (178997) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (2020).

NPPES Registry Identity

NPI1861029183

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameMEGAN ELIZABETH O'BRIENCredential: MD

Location Address675 18TH STSan Francisco, CA 94143-4200

Mailing Address401 Parnassus Ave # 984San Francisco, CA 94143-2211 · (415) 476-7527

Phone(415) 476-7000

Fax(415) 476-7320

Sole ProprietorYes

Medical School CMSGeorgetown University School Of MedicineGraduated 2020

Enumeration DateMarch 25, 2020

Last NPPES UpdateOctober 2, 20254 updates tracked since enumeration

NPPES CertifiedOctober 2, 2025

✔ NPI 1861029183 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · 178997

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

675 18TH ST, San Francisco, CA 94143

Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Megan Elizabeth O'brien Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9133510514

PECOS Enrollment IDI20240617003708

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$202.35 typical visit price

range $69.00 – $202.35

Typical copayment $50.58 (range $17.25 – $50.58)

Most-billed visit code 99205

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CAROLINE CHIU

Student in an Organized Health Care Education/Training Program