Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William R De Wolf, MD

Individual provider Internal Medicine Physician · NPI 1538274055

William R De Wolf, MD is an Internal Medicine in Oakland, California. Graduated from University of California, Davis School of Medicine in 1978, 48 years ago. Practices with Sutter Bay Medical Foundation, a 3,762-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
48
Trained at
University of California, Davis School of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

350 30th St Ste 100
Oakland, CA 94609-3422
Phone: (510) 204-8290
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3100 Telegraph Ave, Oakland, CA 94609-3239 — (510) 204-8290

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G40902 (CA)

Record details

NPI number1538274055
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 21, 2006
Last updated in NPPESNovember 21, 2023
Certification dateJuly 21, 2022
Mailing address10470 Old Placerville Rd, Sacramento, CA 95827-2528

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, DAVIS SCHOOL OF MEDICINE
Graduated 1978 (48 years in practice)
Group practice Sutter Bay Medical Foundation — 3762 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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