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Stephen R Mcmahon, MD

Internal Medicine Physician in Kaufman, TX · enumerated 2006 · practices at Genesis Anesthesia, Pllc.

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

National Provider Identifier

1225098957

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Registry record

Entity type Individual (Type 1)
Name Stephen R Mcmahon
Credential MD
Sex Male
Practice address 850 Ed Hall Dr, Kaufman, TX, 75142
Phone (972) 932-7349
Fax (972) 932-7273
Enumeration date Mar 25, 2006
Last updated in NPPES Dec 23, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License E6514 (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
680016195 Other TX MEDICARE RAILROAD
156329802 Medicaid TX -
156329801 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 Stephen Mcmahon practice?
The practice location on file with NPPES is in Kaufman, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Stephen Mcmahon?
The National Provider Identifier (NPI) for Stephen Mcmahon is 1225098957, 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 2020-12-23.