Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Geoffrey M. Greenberg, M. D.

Sleep Medicine (Internal Medicine) Physician in Yakima, WA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1164522876

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Registry record

Entity type Individual (Type 1)

Name Geoffrey M. Greenberg

Credential M. D.

Sex Male

Practice address Yakima, WA, 98901

Phone (509) 452-5378

Fax (509) 577-7096

Enumeration date Sep 23, 2006

Last updated in NPPES Feb 19, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD17581 (WA) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD17581 (WA) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License MD17581 (WA) Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD17581 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1001841	Medicaid	WA	-
61031	Other	WA	LABOR AND INDUSTRY

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Geoffrey Greenberg?

The National Provider Identifier (NPI) for Geoffrey Greenberg is 1164522876, a Type 1 (individual) record in the CMS NPPES registry.

Where does Geoffrey Greenberg practice?

The practice location on file with NPPES is in Yakima, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Central Washington Sleep Disorders Clinic PC Sleep Disorder Diagnostic Clinic/Center · Yakima, WA NPI 1265531792 Jeanette M. Stromme O.D. Pllc Primary Care Clinic/Center · Yakima, WA NPI 1548595325 Rebekah Fuller Student in an Organized Health Care Education/Training Program · Yakima, WA NPI 1174905780

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-19.