Isabel Ostrer
NPI 1912587726 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isabel Ostrer is a Internal Medicine Physician provider in San Francisco, CA (NPI 1912587726).
Provider details
- NPI number
- 1912587726
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A192326 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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)
- 505 Parnassus Ave Rm M-1480San Francisco, CA 94143-2204Phone: (415) 476-1000
Registry dates
- Enumerated
- 2021-04-14
- Last updated
- 2024-07-19
- Certified
- 2024-07-19
Frequently asked questions
- What is Isabel Ostrer's NPI number?
- Isabel Ostrer's National Provider Identifier (NPI) is 1912587726, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isabel Ostrer's specialty?
- Isabel Ostrer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Isabel Ostrer located?
- Isabel Ostrer's practice location on file with NPPES is 1001 Potrero Avenue Bldg 5 Fl 1m, San Francisco, CA 94110.
- What is Isabel Ostrer's phone number?
- The practice phone number listed in the NPPES registry for Isabel Ostrer is (628) 206-8494.
- Does Isabel Ostrer accept Medicare?
- Isabel Ostrer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isabel Ostrer's NPI active?
- Yes — Isabel Ostrer's NPI (1912587726) is active in the NPPES registry as of the last update on 2024-07-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.