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

Dr. Rebecca Jean Callahan, O.D., M.B.A.

Optometrist in Milford, OH · enumerated 2017.

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

National Provider Identifier

1659807741

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Registry record

Entity type Individual (Type 1)

Name Dr. Rebecca Jean Callahan

Credential O.D., M.B.A.

Sex Female

Practice address Milford, OH, 45150

Phone (513) 600-8348

Enumeration date May 10, 2017

Last updated in NPPES Jul 13, 2018

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1984 (SC) 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

Where does Rebecca Callahan practice?

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

What is the NPI number for Rebecca Callahan?

The National Provider Identifier (NPI) for Rebecca Callahan is 1659807741, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-13.