Robert Warren, M.D.
NPI 1336176015 · Surgery Physician · San Francisco, CA
Robert Warren, M.D. is a Surgery Physician provider in San Francisco, CA (NPI 1336176015).
Provider details
- NPI number
- 1336176015
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G64251 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-06-27
- Last updated
- 2008-06-16
Frequently asked questions
- What is Robert Warren's NPI number?
- Robert Warren's National Provider Identifier (NPI) is 1336176015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Warren's specialty?
- Robert Warren is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Warren located?
- Robert Warren's practice location on file with NPPES is 1600 Divisadero St 4th Floor, San Francisco, CA 94143-0001.
- What is Robert Warren's phone number?
- The practice phone number listed in the NPPES registry for Robert Warren is (415) 353-9889.
- Is Robert Warren's NPI active?
- Yes — Robert Warren's NPI (1336176015) is active in the NPPES registry as of the last update on 2008-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.