IndividualActive
Samuel Santoro, DO
NPI 1013023795 · Obstetrics & Gynecology Physician · Castro Valley, CA
Provider details
- NPI number
- 1013023795
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A4883 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(100/100 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
5 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
20101 Lake Chabot Rd Fl 4
Castro Valley, CA 94546
Phone: (510) 886-3400
Fax: (510) 247-6493
Street-level locationGet directions
Mailing address
325 Distel Cir
Los Altos, CA 94022-1408
Additional practice locations (4)
- 19845 Lake Chabot RdSuite 302Castro Valley, CA 94546-4055Phone: (510) 886-3400Fax: (510) 581-6517
- 19845 Lake Chabot RdSuite 302Castro Valley, CA 94546-4055Phone: (510) 886-3400Fax: (510) 581-6517
- 770 Mason StVacaville, CA 95688-4646Phone: (707) 454-5830Fax: (707) 454-5831
- 100 Hospital Dr Fl 2Vallejo, CA 94589-2580Phone: (707) 551-3600Fax: (707) 551-3656
Registry dates
- Enumerated
- 2006-08-22
- Last updated
- 2019-09-30
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.