NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Spencer T Tseng, MD

Physical Medicine & Rehabilitation Physician in Mc Lean, VA · enumerated 2006.

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

National Provider Identifier

1790853117

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Spencer T Tseng
Credential MD
Sex Male
Practice address 8008 Westpark Dr, Mc Lean, VA, 22102
Fax (703) 922-1111
Enumeration date Dec 1, 2006
Last updated in NPPES Jun 14, 2021

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 0101237028 (VA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Spencer Tseng practice?
The practice location on file with NPPES is in Mc Lean, VA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Spencer Tseng?
The National Provider Identifier (NPI) for Spencer Tseng is 1790853117, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-14.