# Russell Greif, DO

Source: https://ourhealthnetwork.com/doctor/russell-greif-do-1669519765
NPI: 1669519765
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

Russell Greif, DO is a internal medicine based in Lancaster, CA with NPI 1669519765 and offers telehealth visits.

## Profile

- Primary specialty: Internal Medicine
- Credential: DO
- Gender: Male
- Medical school: COLLEGE OF OSTEO MED OF THE PACIFIC AT POMONA
- Graduation year: 1986
- Telehealth: Yes
- NPI: 1669519765 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1669519765))

## Practice and contact

- Address: 2010 W Ave K, Suite 632, Lancaster, CA, 935365229

## Insurance accepted (7 networks)

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

- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 18 plans
- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 6 plans
- [Blue Shield of California](https://ourhealthnetwork.com/insurance/blue-shield-of-california) — 3 plans
- [UnitedHealthcare](https://ourhealthnetwork.com/insurance/unitedhealthcare) — 2 plans
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan
- [Oxford Health Plans (UHC)](https://ourhealthnetwork.com/insurance/oxford-health-plans-uhc) — 1 plan
- [UMR](https://ourhealthnetwork.com/insurance/umr) — 1 plan

To verify a specific plan covers Russell Greif, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1669519765).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 11 disclosed payments from medical industry sources totaling approximately $634.

Largest disclosed payer: GlaxoSmithKline, LLC. ($140 cumulative).

Source: CMS Open Payments program (federal financial-transparency dataset). Industry payment disclosures do not imply any wrongdoing; many are legitimate consulting fees, research support, or speaker honoraria.

## Related on OurHealthNetwork

- [More Internal Medicine doctors in LANCASTER, CA](https://ourhealthnetwork.com/internal-medicine/ca/lancaster)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1669519765)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)