NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Yiyan Liu, M.D.

Nuclear Medicine Physician in Louisville, KY · enumerated 2006.

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

National Provider Identifier

1275558314

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Yiyan Liu
Credential M.D.
Sex Male
Practice address 530 S Jackson St, Louisville, KY, 40202
Phone (502) 852-5875
Enumeration date Jul 12, 2006
Last updated in NPPES Dec 7, 2020

Taxonomy & licenses

207UN0901X Nuclear Cardiology Physician Allopathic & Osteopathic Physicians · License 25MA07759500 (NJ) Secondary
207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians · License TP643 (KY) Primary
207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians · License 25MA07759500 (NJ) 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
MEDICARE Other KY K355840
0059382 Medicaid NJ -

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

What specialty is Yiyan Liu?
Yiyan Liu is registered in NPPES with the primary taxonomy of Nuclear Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-07.