Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory L Hoekstra, D.O.

Specialist in Waterloo, IA · enumerated 2006.

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

National Provider Identifier

1710091251

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Gregory L Hoekstra

Credential D.O.

Sex Male

Practice address 1015 S Hackett Rd, Waterloo, IA, 50701

Phone (319) 274-1000

Fax (319) 292-6526

Enumeration date Aug 19, 2006

Last updated in NPPES Nov 10, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 01585 (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
1710091251	Medicaid	IA	-
P00758400	Other	IA	RR MEDICARE
1097592	Medicaid	IA	-

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

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 Gregory Hoekstra?

Gregory Hoekstra 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-10.