Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Paul W Callahan, D.D.S.

Dentist in Sterling, VA · enumerated 2006.

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

National Provider Identifier

1922015882

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Registry record

Entity type Individual (Type 1)

Name Dr. Paul W Callahan

Credential D.D.S.

Sex Male

Practice address 14 Pidgeon Hill Dr, Suite 200, Sterling, VA, 20165

Phone (703) 444-4104

Fax (703) 444-9344

Enumeration date Aug 2, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

122300000X Dentist Dental Providers · License 0401006996 (VA) Primary

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

What is the NPI number for Paul Callahan?

The National Provider Identifier (NPI) for Paul Callahan is 1922015882, a Type 1 (individual) record in the CMS NPPES registry.

Where does Paul Callahan practice?

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

Other providers at this practice address

Browse all →

Anjali Chandela Dermatology Physician · Sterling, VA NPI 1982652269 Elisa/Act Biotechnologies LLC Clinical Medical Laboratory · Sterling, VA NPI 1104868512 Callahan Dental Dentist · Sterling, VA NPI 1720095573 Karen Callahan Dentist · Sterling, VA NPI 1942217724 Kristen Erekson Family Nurse Practitioner · Sterling, VA NPI 1356625321 Alvarez Dental Smile Dentist · Sterling, VA NPI 1689045908 Maranda Tennyson Marriage & Family Therapist · Sterling, VA NPI 1932056926

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.