Physician Profile

Russell M. Greif, D.O.

Unclaimed Profile

About Dr. Greif

Russell M. Greif, D.O. is a healthcare provider in Lancaster, CA specializing in internal medicine. Russell trained at College of Osteo Med of the Pacific at Pomona, graduating in 1986. Medicare claims data shows Russell provided 2,601 services to 1,270 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more.

Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.

Specialty

Internal Medicine (Primary)

Credentials & Licensing

CA license20A5410
NPI1669519765
NPI issued01/30/2007

License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.

Medicare information

Accepts Medicare assignmentYes
Telehealth reported to CMSYes
Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What does Russell M. Greif specialize in?

Russell M. Greif is an internist in Lancaster, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.

NPI registry

Where is Russell M. Greif located?

Russell M. Greif is listed at 44241 15Th St W Suite 206, Lancaster, CA 93534. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Russell M. Greif's phone number?

The number on file is (661) 726-6490. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is the NPI for Russell M. Greif?

Russell M. Greif's National Provider Identifier is 1669519765. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

Where did Russell M. Greif train?

Russell M. Greif attended College of Osteo Med of the Pacific at Pomona, graduating in 1986. This comes from the CMS National Downloadable File.

CMS public data

How much experience does Russell M. Greif have?

Russell M. Greif has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.

CMS public data

What does Russell M. Greif do most often?

According to Medicare billing data, Russell M. Greif performs procedures including removal of impacted ear wax; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.

Medicare claims

Is Russell M. Greif's profile verified?

Not yet. This profile is built from public federal data and has not been confirmed by Russell M. Greif. If this is you, claiming it is free.

Guide.md

Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.