Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Calvin R. Graef III, O.D.

Q: What is the NPI number for Calvin Graef?

The National Provider Identifier (NPI) for Calvin Graef is 1962649954, a Type 1 (individual) record in the CMS NPPES registry.

Optometrist in Aurora, CO · enumerated 2009.

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

National Provider Identifier

1962649954

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Registry record

Entity type Individual (Type 1)

Name Calvin R. Graef III

Credential O.D.

Sex Male

Practice address 1675 Aurora Ct, Aurora, CO, 80045

Phone (720) 848-0000

Enumeration date Jan 13, 2009

Last updated in NPPES Apr 17, 2026

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 11027T (CA) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 2424 (CO) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Calvin Graef?

The National Provider Identifier (NPI) for Calvin Graef is 1962649954, a Type 1 (individual) record in the CMS NPPES registry.

Where does Calvin Graef practice?

The practice location on file with NPPES is in Aurora, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Kara Hanson Low Vision Rehabilitation Optometrist · Aurora, CO NPI 1710980172 Alan Palestine Retina Specialist (Ophthalmology) Physician · Aurora, CO NPI 1992702708 Prem Subramanian Neuro-ophthalmology Physician · Aurora, CO NPI 1093730673 Jeffrey Bennett Neurology Physician · Aurora, CO NPI 1245349620 Naresh Mandava Retina Specialist (Ophthalmology) Physician · Aurora, CO NPI 1962592634 Shawna Vanderhoof Optometrist · Aurora, CO NPI 1962530162 Sophie Liao Ophthalmic Plastic and Reconstructive Surgery Physician · Aurora, CO NPI 1598965857 Mina Pantcheva Glaucoma Specialist (Ophthalmology) Physician · Aurora, CO NPI 1467643106

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-17.