Diana Douglass, MD
NPI 1457421901 · Obstetrics & Gynecology Physician · San Mateo, CA
Diana Douglass, MD is a Obstetrics & Gynecology Physician provider in San Mateo, CA (NPI 1457421901).
Provider details
- NPI number
- 1457421901
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A86041 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-11-09
- Last updated
- 2022-01-04
Frequently asked questions
- What is Diana Douglass's NPI number?
- Diana Douglass's National Provider Identifier (NPI) is 1457421901, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Douglass's specialty?
- Diana Douglass is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Douglass located?
- Diana Douglass's practice location on file with NPPES is 222 W 39th Ave, San Mateo, CA 94403-4364.
- What is Diana Douglass's phone number?
- The practice phone number listed in the NPPES registry for Diana Douglass is (650) 573-2222.
- Is Diana Douglass's NPI active?
- Yes — Diana Douglass's NPI (1457421901) is active in the NPPES registry as of the last update on 2022-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.