Charles Barr, M.D.
NPI 1861627531 · Internal Medicine Physician · South San Francisco, CA
Charles Barr, M.D. is a Internal Medicine Physician provider in South San Francisco, CA (NPI 1861627531).
Provider details
- NPI number
- 1861627531
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 25MA07288600 (NJ)
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
17 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
- 2009-05-23
- Last updated
- 2011-05-05
Frequently asked questions
- What is Charles Barr's NPI number?
- Charles Barr's National Provider Identifier (NPI) is 1861627531, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Barr's specialty?
- Charles Barr is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Barr located?
- Charles Barr's practice location on file with NPPES is 1 Dna Way, South San Francisco, CA 94080-4918.
- What is Charles Barr's phone number?
- The practice phone number listed in the NPPES registry for Charles Barr is (650) 225-4867.
- Is Charles Barr's NPI active?
- Yes — Charles Barr's NPI (1861627531) is active in the NPPES registry as of the last update on 2011-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.