Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Chao-Huang Sun, M.D., MPH

Nephrology Physician in Riverside, CA · enumerated 2006.

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

National Provider Identifier

1134174493

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Registry record

Entity type Individual (Type 1)

Name Chao-Huang Sun

Credential M.D., MPH

Sex Male

Practice address 3660 Park Sierra Dr, Suite 208, Riverside, CA, 92505

Phone (951) 687-2800

Fax (951) 687-7290

Enumeration date May 24, 2006

Last updated in NPPES Nov 9, 2015

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License A40997 (CA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A40997 (CA) Secondary

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
00A409970	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1134174493 active?

Yes, as of the latest NPPES snapshot, NPI 1134174493 is active (record last updated 2015-11-09).

How do I verify Chao-Huang Sun's NPI record?

Cross-check NPI 1134174493 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 2015-11-09.