Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Michael Thumm, OD
Optometrist in Columbus, OH · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1154521557
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Registry record
Entity type Individual (Type 1)
Name Michael Thumm
Credential OD
Sex Male
Practice address 6500 Sawmill Rd, Columbus, OH, 43235
Phone (614) 734-2685
Fax (614) 798-0264
Enumeration date Jul 23, 2007
Last updated in NPPES Apr 25, 2013
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Michael Thumm?
Michael Thumm is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Dennis Dopkiss Optometrist · Columbus, OH NPI 1871543934 Barbara Benutto Optometrist · Columbus, OH NPI 1013959014 Dr. D. Michael Dopkiss & Assoc. Inc. Sports Vision Optometrist · Columbus, OH NPI 1548376346 Luxottica of America Inc. Eyewear Supplier · Columbus, OH NPI 1184710048 Sawmill Eye Associates, Inc. Optometrist · Columbus, OH NPI 1114182896 Nadine Breslow Optometrist · Columbus, OH NPI 1376830463
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-25.