Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andy Chuu, MD

Nephrology Physician in Fontana, CA · enumerated 2015.

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

National Provider Identifier

1639565286

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Registry record

Entity type Individual (Type 1)

Name Dr. Andy Chuu

Credential MD

Sex Male

Practice address 9961 Sierra Ave, Fontana, CA, 92335

Phone (888) 750-0036

Enumeration date Apr 10, 2015

Last updated in NPPES Oct 25, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A193223 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 2020013469 (MO) Secondary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 2020013469 (MO) Secondary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License A193223 (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
CA746426	Medicaid	CA	-
200088857	Medicaid	MO	-

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

How do I verify Andy Chuu's NPI record?

Cross-check NPI 1639565286 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639565286 active?

Yes, as of the latest NPPES snapshot, NPI 1639565286 is active (record last updated 2024-10-25).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-25.