Summary

Dr. Thomas McMahon is a gastroenterologist with 46 years of experience treating digestive system conditions. He earned his medical degree from Georgetown University School of Medicine and completed his residency training at Wake Forest Baptist Medical Center. Dr. McMahon speaks both English and Spanish, enabling him to serve diverse patient populations.

Dr. McMahon practices at multiple locations including Southern New Hampshire Medical Center in Nashua, New Hampshire, and Bristol Regional Medical Center in Bristol, Tennessee. His expertise includes treating lower gastrointestinal bleeding and rectal problems. He performs essential procedures such as colonoscopy and provides specialized infusion therapy and chemotherapy treatments. Patients rate Dr. McMahon 4.6 out of 5 stars for his care.

Overview based on verified provider data

Quick Facts

  • 4.6
  • 46 years of experience
  • speaks Spanish, English
  • Wake Forest Baptist Medical Center
  • 4 written reviews
  • 1 specialty
  • 10 areas of expertise
  • 1 board certification
  • 4 hospital affiliations
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Thomas Patrick Mcmahon has 2 locations

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Dr. Thomas Patrick Mcmahon, MDChimdi Mfebe, APRNJessica Michelle ThoreenRebecca Lynn Harris
GastroenterologyGastroenterologyNurse PractitionerNurse Practitioner
Accepts New Patients
4.6 
46 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, English Speaks English
Nashua , NHLittle Rock , ARExeter , NHTorrington , CT
Med School: Georgetown University School Of Medicine Med School: Chamberlain University College of Nursing
Current Profile
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Insurance Plans Accepted by Dr. Thomas Patrick Mcmahon

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Thomas Patrick Mcmahon has the following specialty

Specialty Expertise

Dr. Thomas Patrick Mcmahon has the following 10 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Hemorrhoids
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

46 Years Experience

Dr. Thomas Patrick Mcmahon holds an expired medical license in the states of Tennessee and Minnesota.

Medical License

Medical Doctor with an expired medical license in the state of Tennessee that expired in 2026 and an expired medical license in the state of Minnesota that expired in 2026.

Education & Training

Residency

Completed their residency at Wake Forest Baptist Medical Center.

Medical School

Graduated from Georgetown University School Of Medicine in 1980.

NPI Number

Dr. Mcmahon's NPI number is 1619048030.

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Frequently Asked Questions

Which hospitals is Dr. Thomas Mcmahon affiliated with?
Dr. Thomas Mcmahon is affiliated with Newport Hospital, Bristol Regional Medical Center, Southern New Hampshire Medical Center, and Lakewood Health System.
What languages does Dr. Thomas Mcmahon speak?
Dr. Thomas Mcmahon speaks Spanish and English.
Does Dr. Thomas Mcmahon accept my insurance?
You can see the insurance plans that Dr. Thomas Mcmahon accepts on their Vitals profile.
How can I make an appointment with Dr. Thomas Mcmahon?
You can find contact information for Dr. Thomas Mcmahon here on Vitals.
Is Dr. Thomas Mcmahon accepting new patients?
Dr. Thomas Mcmahon has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.

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