What is William Johnson's NPI number?

William Johnson's National Provider Identifier (NPI) is 1285823427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Johnson's specialty?

William Johnson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is William Johnson located?

William Johnson's practice location on file with NPPES is 5950 Harbord Dr, Oakland, CA 94611-3125.

What is William Johnson's phone number?

The practice phone number listed in the NPPES registry for William Johnson is (510) 658-4425.

Is William Johnson's NPI active?

Yes — William Johnson's NPI (1285823427) is active in the NPPES registry as of the last update on 2016-03-03.

IndividualActive

William Johnson, MD

NPI 1285823427 · Internal Medicine Physician · Oakland, CA

William Johnson, MD is a Internal Medicine Physician provider in Oakland, CA (NPI 1285823427).

Provider details

NPI number: 1285823427
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: C36088 (CA)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense C36088 (CA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(88/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
18 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

5950 Harbord Dr

Oakland, CA 94611-3125

Phone: (510) 658-4425

Street-level locationGet directions

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Mailing address