# William M Greif, MD

Source: https://ourhealthnetwork.com/doctor/william-greif-md-1013095108
NPI: 1013095108
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

William M Greif, MD is a general surgery based in Antioch, CA practicing at Permanente Medical Group Inc with NPI 1013095108.

## Profile

- Primary specialty: General Surgery
- Secondary specialties: SURGICAL ONCOLOGY, THORACIC SURGERY, VASCULAR SURGERY
- Credential: MD
- Gender: Male
- Medical school: STANFORD UNIVERSITY SCHOOL OF MEDICINE
- Graduation year: 1993
- NPI: 1013095108 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1013095108))

## Practice and contact

- Practice name: Permanente Medical Group Inc
- Address: 4501 Sand Creek Rd, Antioch, CA, 945318687
- Phone: (925) 813-6500
- Group practice size: 10921 members

## Insurance accepted (2 networks)

This provider is in network with the following insurance carriers, based on federal Transparency in Coverage filings and FHIR provider directories:

- [Kaiser Permanente Northern California](https://ourhealthnetwork.com/insurance/kaiser-permanente-northern-california) — 1 plan
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan

To verify a specific plan covers William M Greif, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1013095108).

## Related on OurHealthNetwork

- [More General Surgery doctors in ANTIOCH, CA](https://ourhealthnetwork.com/general-surgery/ca/antioch)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1013095108)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)