Sean McMahon, MD

Addiction Medicine · Internal Medicine · Cardiology

16+ years in practiceNPI: 1295050169Licensed in VTLicensed in CT

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Credentials & Recognition

Specialties

Addiction MedicineInternal MedicineCardiology

NPI sub-specialties

Internal Medicine207R00000X

Internal Medicine, Cardiovascular Disease207RC0000X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Years in Practice

16+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#5

Top Internal Medicine Doctors in Vermont, 2026

Internal Medicine · Vermont · 2026

#6

Top Cardiologists in Vermont, 2026

Cardiology · Vermont · 2026

#7

Top Addiction Medicine Doctors in Vermont, 2026

Addiction Medicine · Vermont · 2026

#16

Top Cardiologists in Connecticut, 2026

Cardiology · Connecticut · 2026

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Frequently Asked Questions about Dr. Sean McMahon, MD

Where does Dr. Sean McMahon, MD practice?+
Dr. Sean McMahon, MD practices in Connecticut, CT. 80 SEYMOUR STREET HARTFORD HOSPITAL CARDIOLOGY HARTFORD, CT 061025037.
What is Dr. Sean McMahon, MD's phone number?+
Dr. Sean McMahon, MD's practice phone is 860-972-9047. Office contact information is verified on the PBCMMG profile.
What does Dr. Sean McMahon, MD specialize in?+
Dr. Sean McMahon, MD's primary specialty is Addiction Medicine, with additional focus on Internal Medicine, Cardiology.
Is Dr. Sean McMahon, MD board certified?+
Board certification status for Dr. Sean McMahon, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Sean McMahon, MD been practicing?+
Dr. Sean McMahon, MD has been in active practice for 16+ years, based on NPI enumeration and state licensing records.
What is Dr. Sean McMahon, MD's NPI number?+
Dr. Sean McMahon, MD's National Provider Identifier (NPI) is 1295050169, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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