Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Jonathan G Garretson, O.D.

Corneal and Contact Management Optometrist in Clarkston, MI · enumerated 2006.

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

National Provider Identifier

1992885578

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Registry record

Entity type Individual (Type 1)

Name Dr. Jonathan G Garretson

Credential O.D.

Sex Male

Practice address Clarkston, MI, 48346

Phone (248) 241-6537

Fax (248) 241-6654

Enumeration date Oct 17, 2006

Last updated in NPPES Feb 25, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 4901004259 (MI) 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
4801369	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Jonathan Garretson?

Jonathan Garretson is registered in NPPES with the primary taxonomy of Corneal and Contact Management Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Lisa Dietz Family Medicine Physician · Clarkston, MI NPI 1629067541 John Cowan Chiropractor · Clarkston, MI NPI 1285607762 Cowan Chiropractic Clinic, P.C. Chiropractor · Clarkston, MI NPI 1689604464 Lisa Dietz Do Pllc Internal Medicine Physician · Clarkston, MI NPI 1447445879 Katherine Z French, D.O. L.L.C Family Medicine Physician · Clarkston, MI NPI 1598930281 Cody Senkyr Chiropractor · Clarkston, MI NPI 1518337377 Sabrina Russom Nurse Practitioner · Clarkston, MI NPI 1831857903

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-25.