Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Felix Lee Lin, MD, MPH

Diagnostic Radiology Physician in Round Rock, TX · enumerated 2006.

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

National Provider Identifier

1225142581

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Registry record

Entity type Individual (Type 1)

Name Dr. Felix Lee Lin

Credential MD, MPH

Sex Male

Practice address Round Rock, TX, 78665

Phone (512) 509-0100

Fax (512) 218-6330

Enumeration date Aug 17, 2006

Last updated in NPPES Oct 2, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 045280 (CT) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 2006-00541 (NC) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License P5409 (TX) 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
045280	Other	CT	MEDICAL LICENSE
2006-00541	Other	NC	MEDICAL LICENSE

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

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 Felix Lin?

Felix Lin is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-02.