John Ganey, MD
NPI 1215935713 · Hematology & Oncology Physician · Antioch, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Ganey, MD is a Hematology & Oncology Physician provider in Antioch, CA (NPI 1215935713).
Provider details
- NPI number
- 1215935713
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G83253 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Mailing address
Registry dates
- Enumerated
- 2005-07-08
- Last updated
- 2013-04-18
Frequently asked questions
- What is John Ganey's NPI number?
- John Ganey's National Provider Identifier (NPI) is 1215935713, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ganey's specialty?
- John Ganey is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Ganey located?
- John Ganey's practice location on file with NPPES is 4721 Dallas Ranch Road, Antioch, CA 94531-8811.
- What is John Ganey's phone number?
- The practice phone number listed in the NPPES registry for John Ganey is (925) 778-0679.
- Does John Ganey accept Medicare?
- John Ganey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Ganey's NPI active?
- Yes — John Ganey's NPI (1215935713) is active in the NPPES registry as of the last update on 2013-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.