Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Allison B Colby, MPAS, PA-C

Physician Assistant in Woodbridge, VA · enumerated 2012 · practices at Greater Prince William Area Community Heatlh Center.

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

National Provider Identifier

1720352933

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Registry record

Entity type Individual (Type 1)

Name Ms. Allison B Colby

Credential MPAS, PA-C

Sex Female

Practice address 4379 Ridgewood Center Dr, Woodbridge, VA, 22192

Phone (703) 680-7950

Enumeration date Mar 6, 2012

Last updated in NPPES Nov 19, 2019

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 0110003822 (VA) Primary

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 Allison Colby practice?

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

What is the NPI number for Allison Colby?

The National Provider Identifier (NPI) for Allison Colby is 1720352933, 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 2019-11-19.