Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Internal Medicine Practice for Weight Loss and Smokers PC

Internal Medicine Physician in Annandale, VA · enumerated 2011 · authorized official Anthony Hsiao, President.

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

National Provider Identifier

1295025021

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Registry record

Entity type Organization (Type 2)

Legal business name Internal Medicine Practice for Weight Loss and Smokers PC

Practice address 7501 Little River Tpke Ste 103, Annandale, VA, 22003

Phone (703) 256-1335

Enumeration date Apr 13, 2011

Last updated in NPPES Apr 13, 2011

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 0101051072 (VA) Primary

Authorized official

Name Anthony Hsiao

Title President

Phone (703) 256-1335

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

Who is the authorized official for Internal Medicine Practice for Weight Loss and Smokers PC?

NPPES lists Anthony Hsiao (President) as the authorized official for this organization.

What is the NPI number for Internal Medicine Practice for Weight Loss and Smokers PC?

The NPI for Internal Medicine Practice for Weight Loss and Smokers PC is 1295025021, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-13.