NPI Portal NPI Lookup & Verification

Dr. Gregory Jen-Len Yee, MD

Dr. Gregory Jen-Len Yee is a Radiation Oncology Physician provider (Radiology) practicing in Ames, IA, registered in the NPPES registry with NPI 1962484113 since 2005. The credential MD stands for Doctor of Medicine.

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NPI 1962484113
Entity type Individual (Type 1)
Name Dr. Gregory Jen-Len Yee
Credential MD
Sex Male
Practice address 1111 DUFF AVE, Ames, IA, 50010
Phone 5152392411
Fax 5152392492
Enumeration date 2005-11-15
Last updated in NPPES 2012-08-20

Taxonomy & licenses

Taxonomy code Specialty Primary License State
2085R0001X Radiation Oncology Physician Primary 27278 IA

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
0058883 Medicaid IA
Copy-ready billing details
Provider: Gregory Yee, MD
NPI: 1962484113
Taxonomy: 2085R0001X (Radiation Oncology Physician)
Address: 1111 DUFF AVE, Ames, IA, 50010

Other providers at this practice address

NPI Name Type Specialty Location
1811983695 Patrick Allaire Individual Anesthesiology Physician Ames, IA
1528055688 Karen Carlson Individual Hospitalist Physician Ames, IA
1235126137 Jotesh Chug Individual Hospitalist Physician Ames, IA
1558358440 William Barry Individual Hospitalist Physician Ames, IA
1629066287 Becky Davis-Kramer Individual Emergency Medicine Physician Ames, IA
1013905421 Jeffrey Drawbond Individual Anesthesiology Physician Ames, IA
1356339527 Robert Fears Individual Anesthesiology Physician Ames, IA
1184612228 Steven Fisher Individual Emergency Medicine Physician Ames, IA

Verify this record

Cross-check NPI 1962484113 against the authoritative CMS record: view Dr. Gregory Jen-Len Yee on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

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.
What specialty is Gregory Yee?
Gregory Yee is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2012-08-20.