Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Colin J McMahon, MD

Individual provider Internal Medicine Physician · NPI 1427015650

Colin J McMahon, MD is an Internal Medicine in Lockport, New York. Graduated from State University of New York at Buffalo School of Medicine in 1990, 36 years ago. Practices with Buffalo-Niagara Hospitalists LLC, a 37-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
36
Trained at
State University of New York at Buffalo School of Medicine
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

521 E Ave
Lockport, NY 14094-3201
Phone: (716) 514-5700
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 186388 (NY)

Record details

NPI number1427015650
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 1, 2006
Last updated in NPPESApril 3, 2020
Certification dateApril 3, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK AT BUFFALO SCHOOL OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Buffalo-Niagara Hospitalists Llc — 37 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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