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Christopher Johnson, MD
NPI 1730268434 · Internal Medicine Physician · Oakland, CA
Christopher Johnson, MD is a Internal Medicine Physician provider in Oakland, CA (NPI 1730268434).
Provider details
- NPI number
- 1730268434
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G74430 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 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
275 W Macarthur
Oakland, CA 94611-5641
Phone: (510) 752-1000
Street-level locationGet directions
Mailing address
275 W Macarthur
Oakland, CA 94611-5641
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2014-11-24
Frequently asked questions
- What is Christopher Johnson's NPI number?
- Christopher Johnson's National Provider Identifier (NPI) is 1730268434, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Johnson's specialty?
- Christopher Johnson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Johnson located?
- Christopher Johnson's practice location on file with NPPES is 275 W Macarthur, Oakland, CA 94611-5641.
- What is Christopher Johnson's phone number?
- The practice phone number listed in the NPPES registry for Christopher Johnson is (510) 752-1000.
- Is Christopher Johnson's NPI active?
- Yes — Christopher Johnson's NPI (1730268434) is active in the NPPES registry as of the last update on 2014-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.