Megan O'Brien, MD
NPI 1861029183 · Psychiatry Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Megan O'Brien, MD is a Psychiatry Physician provider in San Francisco, CA (NPI 1861029183).
Provider details
- NPI number
- 1861029183
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 178997 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (3)
- 1801 Vicente StSan Francisco, CA 94116-2923Phone: (415) 681-3211
- 401 Parnassus AveSan Francisco, CA 94143-2211Phone: (415) 476-7527
- 401 Parnassus Ave # 984San Francisco, CA 94143-2211Phone: (415) 476-7527
Registry dates
- Enumerated
- 2020-03-25
- Last updated
- 2025-10-02
- Certified
- 2025-10-02
Frequently asked questions
- What is Megan O'Brien's NPI number?
- Megan O'Brien's National Provider Identifier (NPI) is 1861029183, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Megan O'Brien's specialty?
- Megan O'Brien is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Megan O'Brien located?
- Megan O'Brien's practice location on file with NPPES is 675 18th St, San Francisco, CA 94143-4200.
- What is Megan O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Megan O'Brien is (415) 476-7000.
- Does Megan O'Brien accept Medicare?
- Megan O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Megan O'Brien's NPI active?
- Yes — Megan O'Brien's NPI (1861029183) is active in the NPPES registry as of the last update on 2025-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.