NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marvin Tieu Dang, DO

Sports Medicine (Family Medicine) Physician in San Clemente, CA · enumerated 2018.

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

National Provider Identifier

1720577687

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Marvin Tieu Dang
Credential DO
Sex Male
Practice address 993 Avenida Pico Ste 130, San Clemente, CA, 92673
Phone (949) 557-0410
Enumeration date May 7, 2018
Last updated in NPPES Oct 20, 2025

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A23024 (CA) Secondary
207QS0010X Sports Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 20A23024 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Marvin Dang practice?
The practice location on file with NPPES is in San Clemente, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marvin Dang?
The National Provider Identifier (NPI) for Marvin Dang is 1720577687, 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 2025-10-20.