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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Richard B. D. Chun, M.D.

Gastroenterology Physician in Citrus Heights, CA · enumerated 2005.

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

National Provider Identifier

1003818055

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Registry record

Entity type Individual (Type 1)
Name Richard B. D. Chun
Credential M.D.
Sex Male
Practice address 7777 Sunrise Blvd Ste 2500, Citrus Heights, CA, 95610
Phone (916) 737-5555
Fax (916) 880-5430
Enumeration date Jun 2, 2005
Last updated in NPPES Dec 21, 2022

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License C28231 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
00C282310 Other CA BLUE SHIELD
C28231 Other CA BLUE CROSS
952587937 Other CA BLUE CROSS
00C282310 Medicaid CA -

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.

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Frequently asked questions

Is NPI 1003818055 active?
Yes, as of the latest NPPES snapshot, NPI 1003818055 is active (record last updated 2022-12-21).
How do I verify Richard Chun's NPI record?
Cross-check NPI 1003818055 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-21.