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

Calvin Lee Dixon Sr., MD

Pulmonary Disease Physician in Duncanville, TX · enumerated 2006 · practices at S. Y. Turng, M.D., and L. R. Hsu, M.D., P.A..

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

National Provider Identifier

1568428183

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Registry record

Entity type Individual (Type 1)
Name Calvin Lee Dixon Sr.
Credential MD
Sex Male
Practice address Duncanville, TX, 75116
Phone (972) 298-3300
Fax (972) 298-5505
Enumeration date Apr 22, 2006
Last updated in NPPES Aug 9, 2011

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

Taxonomy & licenses

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License E4297 (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
033668701 Medicaid TX -

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

Where does Calvin Dixon practice?
The practice location on file with NPPES is in Duncanville, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Calvin Dixon?
The National Provider Identifier (NPI) for Calvin Dixon is 1568428183, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-09.