NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Weiting Tarng, MD

Internal Medicine Physician in Carson, CA · enumerated 2005.

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

National Provider Identifier

1376545723

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. William Weiting Tarng
Credential MD
Sex Male
Practice address 1000 E Dominguez St, Suite 110, Carson, CA, 90746
Phone (310) 366-6959
Fax (424) 704-2493
Enumeration date Aug 15, 2005
Last updated in NPPES Sep 21, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A89784 (CA) 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 William Tarng practice?
The practice location on file with NPPES is in Carson, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Tarng?
The National Provider Identifier (NPI) for William Tarng is 1376545723, 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 2016-09-21.