Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Nathan G Baas, O.D.
Optometrist in Traverse City, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619039864
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Registry record
Entity type Individual (Type 1)
Name Nathan G Baas
Credential O.D.
Sex Male
Practice address 515 S Union St, Traverse City, MI, 49684
Phone (231) 946-0333
Fax (231) 946-1665
Enumeration date Dec 14, 2006
Last updated in NPPES Aug 24, 2010
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 |
|---|---|---|---|
| 944770039 | Medicaid | MI | - |
| 900B811100 | Other | MI | BCBS |
| 944717597 | Medicaid | MI | - |
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
What is the NPI number for Nathan Baas?
The National Provider Identifier (NPI) for Nathan Baas is 1619039864, a Type 1 (individual) record in the CMS NPPES registry.
Where does Nathan Baas practice?
The practice location on file with NPPES is in Traverse City, 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 2010-08-24.