Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Michael Chung, MD

Q: What is the NPI number for Mark Chung?

The National Provider Identifier (NPI) for Mark Chung is 1740290378, a Type 1 (individual) record in the CMS NPPES registry.

Internal Medicine Physician in Cerritos, CA · enumerated 2006.

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

National Provider Identifier

1740290378

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Michael Chung

Credential MD

Sex Male

Practice address 11821 South St, Cerritos, CA, 90703

Phone (562) 991-5679

Fax (562) 991-5681

Enumeration date Aug 8, 2006

Last updated in NPPES Oct 13, 2021

Taxonomy & licenses

207QS1201X Sleep Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License G52290 (CA) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License G52290 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G52290 (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

What is the NPI number for Mark Chung?

The National Provider Identifier (NPI) for Mark Chung is 1740290378, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Chung practice?

The practice location on file with NPPES is in Cerritos, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-13.