Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Harold L Zimmer, M.D.

Specialist in Bellevue, WA · enumerated 2006.

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

National Provider Identifier

1932139581

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Registry record

Entity type Individual (Type 1)

Name Dr. Harold L Zimmer

Credential M.D.

Sex Male

Practice address 1200 112th Ave Ne, C115, Bellevue, WA, 98004

Phone (425) 455-0244

Fax (425) 455-9411

Enumeration date Jul 3, 2006

Last updated in NPPES Aug 20, 2019

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 18175 (WA) Secondary

174400000X Specialist Other Service Providers · License 18175 (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
000106011	Medicaid	WA	-

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Harold Zimmer?

Harold Zimmer is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-20.