Summary

Dr. William Maher treats colon polyps, diverticular disease, and diverticulosis, and performs lower GI endoscopy, colonoscopy, and upper GI endoscopy. He practices gastroenterology and internal medicine and has 34 years of experience. He speaks English and Spanish.

Dr. Maher completed his residency at Strong Memorial Hospital and is affiliated with Portsmouth Regional Hospital, Wentworth Douglass Hospital, and Frisbie Memorial Hospital. He sees patients in Somersworth, Rochester, Dover, and Portsmouth, New Hampshire.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.2
  • 34 years of experience
  • speaks English, Spanish
  • Strong Memorial Hospital
  • 4 written reviews
  • 2 specialties
  • 11 areas of expertise
  • 3 hospital affiliations
  • 5 office locations
  • Male

Patients’ Perspective

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

Office Locations

Dr. William Edward Maher has 5 locations

Atlantic Digestive Specialists

21 Clark WaySomersworth, NH 03878
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Frisbie Memorial Hospital

11 Whitehall RdRochester, NH 03867

Wentworth Surgery Center Llc

6 Works WaySomersworth, NH 03878
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Portsmouth Regional Hospital

333 Borthwick AvePortsmouth, NH 03801

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Dr. William Edward Maher, MD
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Dr. William Edward Maher, MDChimdi Mfebe, APRNDr. Maria Jose Zambrano OrdonezKaren Julia Doherty
GastroenterologyGastroenterologyInternal MedicinePediatrics
Accepts New Patients Accepts New Patients
4.2 
34 Years of Experience 13 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English Speaks English
Somersworth , NHLittle Rock , ARPortsmouth , NHRaymond , NH
Med School: Rutgers New Jersey Medical School Med School: Chamberlain University College of Nursing Med School: Universidad Catolica De Santiago De Guayaquil Facultad De Ciencias Medicas
Current Profile
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Insurance Plans Accepted by Dr. William Edward Maher

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. William Edward Maher has the following 2 specialties

Specialty Expertise

Dr. William Edward Maher has the following 11 areas of expertise

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

Certifications, License, & Education

34 Years Experience

Dr. William Edward Maher holds an expired medical license in the state of New Hampshire.

Medical License

Medical Doctor with an expired medical license in the state of New Hampshire that expired in 2026.

Education & Training

Residency

Completed their residency at Strong Memorial Hospital.

Medical School

Graduated from Rutgers New Jersey Medical School in 1992.

NPI Number

Dr. Maher's NPI number is 1477550739.

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Frequently Asked Questions

What languages does Dr. William Maher speak?
Dr. William Maher speaks English and Spanish.
Is Dr. William Maher accepting new patients?
Dr. William Maher is accepting new patients on Vitals. View Dr. William Maher's profile on Vitals to make an appointment.
Does Dr. William Maher accept my insurance?
You can see the insurance plans that Dr. William Maher accepts on their Vitals profile.
Does Dr. William Maher accept virtual/telehealth appointments?
Dr. William Maher has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. William Maher affiliated with?
Dr. William Maher is affiliated with Portsmouth Regional Hospital, Wentworth Douglass Hospital, and Frisbie Memorial Hospital.

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