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

Dr. Douglas L. Willemin, D.C.

Chiropractor in Sheridan, MI · enumerated 2006 · practices at Montcalm Center for Orthopedic Excellence PC.

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

National Provider Identifier

1700969284

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Registry record

Entity type Individual (Type 1)

Name Dr. Douglas L. Willemin

Credential D.C.

Sex Male

Practice address Sheridan, MI, 48884

Phone (989) 291-3202

Fax (989) 291-3203

Enumeration date Oct 20, 2006

Last updated in NPPES Feb 20, 2017

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 2301004754 (MI) Primary

111N00000X Chiropractor Chiropractic Providers · License CHIR002580 (GA) Secondary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
2123215	Medicaid	MI	-

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

What specialty is Douglas Willemin?

Douglas Willemin is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Montcalm Center for Orthopedic Excellence PC Orthopaedic Surgery Physician · Sheridan, MI NPI 1548489065

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-20.