Gillian Reierson, M.D. PH.D.
NPI 1003178641 · Psychiatry Physician · Walnut Creek, CA
Gillian Reierson, M.D. PH.D. is a Psychiatry Physician provider in Walnut Creek, CA (NPI 1003178641).
Provider details
- NPI number
- 1003178641
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D. PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A126534 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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 (1)
- 2001 the AlamedaSan Jose, CA 95126-1136Phone: (408) 261-7135Fax: (408) 984-5840
Registry dates
- Enumerated
- 2012-06-11
- Last updated
- 2018-09-27
Frequently asked questions
- What is Gillian Reierson's NPI number?
- Gillian Reierson's National Provider Identifier (NPI) is 1003178641, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Reierson's specialty?
- Gillian Reierson is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Gillian Reierson located?
- Gillian Reierson's practice location on file with NPPES is 2970 Camino Diablo Fl 1, Walnut Creek, CA 94597.
- What is Gillian Reierson's phone number?
- The practice phone number listed in the NPPES registry for Gillian Reierson is (925) 360-5264.
- Is Gillian Reierson's NPI active?
- Yes — Gillian Reierson's NPI (1003178641) is active in the NPPES registry as of the last update on 2018-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.