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Giselda Tan, M.D.
NPI 1538257035 · Psychiatry Physician · San Jose, CA
Giselda Tan, M.D. is a Psychiatry Physician provider in San Jose, CA (NPI 1538257035).
Provider details
- NPI number
- 1538257035
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A039416 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
2400 Moorpark Ave
Suite 300
San Jose, CA 95128-2631
Phone: (408) 975-2730
Fax: (408) 975-2745
Street-level locationGet directions
Mailing address
4138 Callan Blvd
Daly City, CA 94015-4430
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2008-02-29
Frequently asked questions
- What is Giselda Tan's NPI number?
- Giselda Tan's National Provider Identifier (NPI) is 1538257035, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Giselda Tan's specialty?
- Giselda Tan is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Giselda Tan located?
- Giselda Tan's practice location on file with NPPES is 2400 Moorpark Ave, San Jose, CA 95128-2631.
- What is Giselda Tan's phone number?
- The practice phone number listed in the NPPES registry for Giselda Tan is (408) 975-2730.
- Is Giselda Tan's NPI active?
- Yes — Giselda Tan's NPI (1538257035) is active in the NPPES registry as of the last update on 2008-02-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.