NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Tat- Sum Lee, M.D.

Family Medicine Physician in Dunkirk, NY · enumerated 2006.

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

National Provider Identifier

1477500304

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Registry record

Entity type Individual (Type 1)
Name Dr. Tat- Sum Lee
Credential M.D.
Sex Male
Practice address 3898 Vineyard Dr, Suite 3, Dunkirk, NY, 14048
Phone (716) 363-1515
Fax (716) 363-7677
Enumeration date May 27, 2006
Last updated in NPPES Nov 29, 2016

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 126308 (NY) 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
6407025 Other NY INDEPENDENT HEALTH
000507408002 Other NY BLUE CROSS BLUE SHIELD
00600702 Medicaid NY -
00010102203 Other NY UNIVERA

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 Tat- Sum Lee's NPI record?
Cross-check NPI 1477500304 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1477500304 active?
Yes, as of the latest NPPES snapshot, NPI 1477500304 is active (record last updated 2016-11-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-29.