Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gustine Ong Liu-Young, M.D.

Infectious Disease Physician in Crystal River, FL · enumerated 2007.

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

National Provider Identifier

1528242526

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Registry record

Entity type Individual (Type 1)

Name Dr. Gustine Ong Liu-Young

Credential M.D.

Sex Female

Practice address 760 Se 5th Ter, Crystal River, FL, 34429

Phone (352) 417-0238

Fax (352) 794-3146

Enumeration date Dec 27, 2007

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License ME100412 (FL) 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

How do I verify Gustine Liu-Young's NPI record?

Cross-check NPI 1528242526 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1528242526 active?

Yes, as of the latest NPPES snapshot, NPI 1528242526 is active (record last updated 2022-07-21).

Other providers at this practice address

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Maxfelonilo A Domingo MD PA Cardiovascular Disease Physician · Crystal River, FL NPI 1871528489 Citrus Infectious Disease LLC Medical Specialty Clinic/Center · Crystal River, FL NPI 1861669889

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