Dr Russell M Greif, DO - Medicare Internal Medicine in Lancaster, CA

Dr Russell M Greif, DO is a medicare enrolled "Internal Medicine" physician in Lancaster, California. He went to College Of Osteo Med Of The Pacific At Pomona and graduated in 1986 and has 38 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 44241 15th St W, Suite 206, Lancaster, California. You can reach out to his office (for appointments etc.) via phone at (661) 726-6490.

Dr Russell M Greif is licensed to practice in California (license number 20A5410) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1669519765.

Contact Information

Dr Russell M Greif, DO
44241 15th St W, Suite 206,
Lancaster, CA 93534-4037
(661) 726-6490
(661) 726-6494

Map and Direction




Physician's Profile

Full NameDr Russell M Greif
GenderMale
SpecialityInternal Medicine
Experience38 Years
Location44241 15th St W, Lancaster, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Russell M Greif attended and graduated from College Of Osteo Med Of The Pacific At Pomona in 1986
  NPI Data:
  • NPI Number: 1669519765
  • Provider Enumeration Date: 01/30/2007
  • Last Update Date: 12/13/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 7911022934
  • Enrollment ID: I20100915000042

Medical Identifiers

Medical identifiers for Dr Russell M Greif such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1669519765NPI-NPPES
020A54100MedicaidCA
954483182OtherCABLUE CROSS
DOAX54100MedicaidCA
020A54100OtherCABLUE SHIELD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 20A5410 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Antelope Valley HospitalLancaster, CAHospital
Palmdale Regional Medical CenterPalmdale, CAHospital

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Russell M Greif is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Russell M Greif, DO
2010 W Avenue K # 632,
Lancaster, CA 93536-5229

Ph: (661) 726-6490
Dr Russell M Greif, DO
44241 15th St W, Suite 206,
Lancaster, CA 93534-4037

Ph: (661) 726-6490

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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