HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / CA

RUSSELL GREIF, DO

INTERNAL MEDICINE

Medical school: COLLEGE OF OSTEO MED OF THE PACIFIC AT POMONA

Graduated: 1986

Offers telehealth

NPI: 1669519765

Practice Locations (3)

2010 W AVE K, SUITE 632

LANCASTER, CA 935365229

44241 15TH ST W, SUITE 206

LANCASTER, CA 935345501

44241 15TH W ST, SUITE 206

LANCASTER, CA 935345501

6617266490

Source: CMS National Downloadable File, September 2026.