Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexander H Liu, M.D.

Urology Physician in Modesto, CA · enumerated 2007.

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

National Provider Identifier

1982721718

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander H Liu

Credential M.D.

Sex Male

Practice address 1541 Florida Ave, Suite 200, Modesto, CA, 95350

Phone (209) 577-3388

Fax (209) 523-0764

Enumeration date Mar 25, 2007

Last updated in NPPES Apr 7, 2011

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License G078743 (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
CD069A	Other	CA	MEDICARE GROUP PTAN
CNC63Z	Other	CA	MEDICARE INDIVIDUAL PTAN

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

How do I verify Alexander Liu's NPI record?

Cross-check NPI 1982721718 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1982721718 active?

Yes, as of the latest NPPES snapshot, NPI 1982721718 is active (record last updated 2011-04-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-07.