NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Harold James Willens, MD

Cardiovascular Disease Physician in Petoskey, MI · enumerated 2006.

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

National Provider Identifier

1205859477

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Harold James Willens
Credential MD
Sex Male
Practice address 560 W Mitchell St, Suite 400, Petoskey, MI, 49770
Fax (231) 487-6055
Enumeration date Jul 26, 2006
Last updated in NPPES Mar 29, 2011

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 4301038344 (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
0602402031 Other MI BLUE SHIELD INDIVIDUAL PI
4087252 Medicaid MI -
P54456 Other MI BLUE CARE NETWORK

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

Where does Harold Willens practice?
The practice location on file with NPPES is in Petoskey, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Harold Willens?
The National Provider Identifier (NPI) for Harold Willens is 1205859477, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-29.