Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Liu, M.D.

Ophthalmology Physician in Riverside, CA · enumerated 2015.

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

National Provider Identifier

1457732661

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Registry record

Entity type Individual (Type 1)

Name John Liu

Credential M.D.

Sex Male

Practice address 7117 Brockton Ave, Riverside, CA, 92506

Phone (951) 321-6356

Fax (951) 784-3258

Enumeration date Jun 12, 2015

Last updated in NPPES Apr 7, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 264271 (MA) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License A180518 (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

Is NPI 1457732661 active?

Yes, as of the latest NPPES snapshot, NPI 1457732661 is active (record last updated 2025-04-07).

How do I verify John Liu's NPI record?

Cross-check NPI 1457732661 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 2025-04-07.