Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Darren Lloyd Grunwaldt, D.O.

Neuromusculoskeletal Medicine & OMM Physician in Wyoming, MI · enumerated 2007.

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

National Provider Identifier

1437371788

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Registry record

Entity type Individual (Type 1)

Name Darren Lloyd Grunwaldt

Credential D.O.

Sex Male

Practice address 781 36th St Se, Wyoming, MI, 49548

Phone (616) 252-4100

Fax (616) 252-4953

Enumeration date May 3, 2007

Last updated in NPPES Dec 31, 2021

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 5101016401 (MI) Secondary

204D00000X Neuromusculoskeletal Medicine & OMM Physician Allopathic & Osteopathic Physicians · License 5101016401 (MI) 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
OE06239098	Other	MI	MEDICARE

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 specialty is Darren Grunwaldt?

Darren Grunwaldt is registered in NPPES with the primary taxonomy of Neuromusculoskeletal Medicine & OMM Physician. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-31.