Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Nathan Robert Slezak, O.D.
Optometrist in Gaylord, MI · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821300088
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Nathan Robert Slezak
Credential O.D.
Sex Male
Practice address 829 W Main St, Suite E, Gaylord, MI, 49735
Phone (989) 732-6261
Fax (989) 732-1276
Enumeration date Jul 5, 2010
Last updated in NPPES Jul 26, 2011
Taxonomy & licenses
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 |
|---|---|---|---|
| 0F9100 | Other | MI | BLUE CROSS BLUE SHIELD |
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.
Frequently asked questions
How do I verify Nathan Slezak's NPI record?
Cross-check NPI 1821300088 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1821300088 active?
Yes, as of the latest NPPES snapshot, NPI 1821300088 is active (record last updated 2011-07-26).
Other providers at this practice address
Browse all → Robert Slezak Optometrist · Gaylord, MI NPI 1528049079 Gaylord Eye Care Center Inc Optometrist · Gaylord, MI NPI 1306827837 Peter Oppermann Optometrist · Gaylord, MI NPI 1942281472 Ronald Mead Optometrist · Gaylord, MI NPI 1831170380 Family Fare, LLC Pharmacy · Gaylord, MI NPI 1306946637 Vital Care Home Medical Equip Inc Durable Medical Equipment & Medical Supplies · Gaylord, MI NPI 1578650115 Pamela Morgridge Professional Counselor · Gaylord, MI NPI 1578688420 Alfred Glasby Pharmacist · Gaylord, MI NPI 1326321159
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-26.