John Mccarren, MD
NPI 1689621518 · Critical Care Medicine (Internal Medicine) Physician · San Diego, CA
John Mccarren, MD is a Critical Care Medicine (Internal Medicine) Physician provider in San Diego, CA (NPI 1689621518).
Provider details
- NPI number
- 1689621518
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G41908 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
20 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
- 2006-05-27
- Last updated
- 2025-09-11
Frequently asked questions
- What is John Mccarren's NPI number?
- John Mccarren's National Provider Identifier (NPI) is 1689621518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mccarren's specialty?
- John Mccarren is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is John Mccarren located?
- John Mccarren's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is John Mccarren's phone number?
- The practice phone number listed in the NPPES registry for John Mccarren is (619) 543-5720.
- Is John Mccarren's NPI active?
- Yes — John Mccarren's NPI (1689621518) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.