Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Timothy Piearson, D.O.

Family Medicine Physician in Greenfield, IA · enumerated 2006.

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

National Provider Identifier

1740233659

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Registry record

Entity type Individual (Type 1)

Name Dr. Timothy Piearson

Credential D.O.

Sex Male

Practice address 609 Se Kent St, Greenfield, IA, 50849

Phone (641) 743-6189

Fax (641) 743-6217

Enumeration date May 19, 2006

Last updated in NPPES Nov 17, 2022

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 3543 (IA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
1432153	Medicaid	IA	-
37448	Other	IA	BLUE CROSS/BLUE SHIELD

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 Timothy Piearson?

Timothy Piearson is registered in NPPES with the primary taxonomy of Family Medicine Physician. 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 2022-11-17.