Brett Petersen, M.D.
NPI 1821253493 · Internal Medicine Physician · San Diego, CA
Brett Petersen, M.D. is a Internal Medicine Physician provider in San Diego, CA (NPI 1821253493).
Provider details
- NPI number
- 1821253493
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A104551 (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
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
- 2008-07-23
- Last updated
- 2008-07-23
Frequently asked questions
- What is Brett Petersen's NPI number?
- Brett Petersen's National Provider Identifier (NPI) is 1821253493, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brett Petersen's specialty?
- Brett Petersen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brett Petersen located?
- Brett Petersen's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9001.
- What is Brett Petersen's phone number?
- The practice phone number listed in the NPPES registry for Brett Petersen is (619) 543-6737.
- Is Brett Petersen's NPI active?
- Yes — Brett Petersen's NPI (1821253493) is active in the NPPES registry as of the last update on 2008-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.