Mara Cao, MD
NPI 1154966091 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mara Cao, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1154966091).
Provider details
- NPI number
- 1154966091
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A194823 (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
6 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
- 2019-11-14
- Last updated
- 2025-11-21
- Certified
- 2025-11-21
Frequently asked questions
- What is Mara Cao's NPI number?
- Mara Cao's National Provider Identifier (NPI) is 1154966091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mara Cao's specialty?
- Mara Cao is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mara Cao located?
- Mara Cao's practice location on file with NPPES is 1580 Valencia Street Level 3, San Francisco, CA 94110.
- What is Mara Cao's phone number?
- The practice phone number listed in the NPPES registry for Mara Cao is (415) 600-5400.
- Does Mara Cao accept Medicare?
- Mara Cao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mara Cao's NPI active?
- Yes — Mara Cao's NPI (1154966091) is active in the NPPES registry as of the last update on 2025-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.