NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Donald Grutzmacher, O.D.

Optometrist in Cincinnati, OH · enumerated 2006 · practices at Cooke Landen & Grutzmacher Od Inc.

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

National Provider Identifier

1043380249

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Donald Grutzmacher
Credential O.D.
Sex Male
Practice address 486 Ohio Pike, Cincinnati, OH, 45255
Phone (513) 753-8225
Fax (513) 753-8589
Enumeration date Nov 8, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3173T465 (OH) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
0345693 Medicaid OH -

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 Donald Grutzmacher practice?
The practice location on file with NPPES is in Cincinnati, OH. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Donald Grutzmacher?
The National Provider Identifier (NPI) for Donald Grutzmacher is 1043380249, 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 2007-07-08.