NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Robert Winkle, M.D.

Otolaryngology Physician in Grand Rapids, MI · enumerated 2006.

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

National Provider Identifier

1457379240

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mark Robert Winkle
Credential M.D.
Sex Male
Practice address 655 Kenmoor Ave Se, Suite A, Grand Rapids, MI, 49546
Phone (616) 575-1212
Fax (616) 575-1219
Enumeration date Jul 18, 2006
Last updated in NPPES Jul 21, 2008

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License MW075576 (MI) 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
4212922 Medicaid MI -
0D11035 Other MI BLUE CROSS BLUE SHIELD
40015120 Other MI RAILROAD 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 is the NPI number for Mark Winkle?
The National Provider Identifier (NPI) for Mark Winkle is 1457379240, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Winkle practice?
The practice location on file with NPPES is in Grand Rapids, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-21.