Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marcus Andrew Simonich, O.D.
Optometrist in Ronan, MT · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1497989396
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Registry record
Entity type Individual (Type 1)
Name Dr. Marcus Andrew Simonich
Credential O.D.
Sex Male
Practice address 417 Main St Sw, Ronan, MT, 59864
Phone (406) 676-3937
Enumeration date May 6, 2009
Last updated in NPPES Apr 3, 2012
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 |
|---|---|---|---|
| 807 | Other | MT | LICENSE NUMBER FOR STATE OF MONTANA |
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 Marcus Simonich?
The National Provider Identifier (NPI) for Marcus Simonich is 1497989396, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marcus Simonich practice?
The practice location on file with NPPES is in Ronan, MT. 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 2012-04-03.