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

Dr. Cheryl F Callahan, DDS

Dentist in Rockville, MD · enumerated 2007.

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

National Provider Identifier

1013032903

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Registry record

Entity type Individual (Type 1)

Name Dr. Cheryl F Callahan

Credential DDS

Sex Female

Practice address Rockville, MD, 20850

Phone (301) 948-1212

Fax (301) 840-1722

Enumeration date Mar 20, 2007

Last updated in NPPES Mar 4, 2019

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 09753 (MD) Primary

332B00000X Durable Medical Equipment & Medical Supplies Suppliers · License 9753 (MD) Secondary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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 Cheryl Callahan practice?

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

What is the NPI number for Cheryl Callahan?

The National Provider Identifier (NPI) for Cheryl Callahan is 1013032903, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-04.