Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Erin Johnson, PA
Physician Assistant in Fairfax, VA · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720859630
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Registry record
Entity type Individual (Type 1)
Name Erin Johnson
Credential PA
Sex Female
Practice address 3620 Joseph Siewick Dr Ste 100, Fairfax, VA, 22033
Phone (703) 277-2663
Enumeration date Jan 10, 2024
Last updated in NPPES Jan 10, 2024
Taxonomy & licenses
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA 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.
Frequently asked questions
What is the NPI number for Erin Johnson?
The National Provider Identifier (NPI) for Erin Johnson is 1720859630, a Type 1 (individual) record in the CMS NPPES registry.
Where does Erin Johnson practice?
The practice location on file with NPPES is in Fairfax, VA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-10.