Individual provider · Type 1 NPI

John Wesley Patresan, MD

Hematology & Oncology Physician · Martinez, CA

NPI number 1023644978 Active

Practice location

2500 Alhambra Ave
Martinez, CA 94553-3156

Call (925) 370-5000 Map

Specialties and licenses

TaxonomyCodeLicense
Hematology & Oncology Physician Primary 207RH0003XA205802 (CA)

Hematology & Oncology Physician: An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

493 other providers at this address

Other hematology & oncology physician providers in Martinez

See all in Martinez →

About NPI 1023644978

John Wesley Patresan, MD's National Provider Identifier is 1023644978, issued on Mar 22, 2020. The primary taxonomy on file is Hematology & Oncology Physician (207RH0003X), and the practice location is in Martinez, CA. The record was last updated on Aug 8, 2026.