IndividualActive
Brett Chamberlin, M.D.
NPI 1134323934 · Internal Medicine Physician · Oceanside, CA
Provider details
- NPI number
- 1134323934
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 105614 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
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
200 Mercy Circle
Oceanside, CA 92055
Phone: (760) 725-1288
Approximate (ZIP-level) locationGet directions
Mailing address
Psc 455 Box 208
Fpo, AP 96540-0003
Registry dates
- Enumerated
- 2007-06-14
- Last updated
- 2023-10-20
- Certified
- 2022-05-23
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.