Summary

Dr. Mark Nitzberg is a gastroenterologist and internal medicine physician who has dedicated 37 years to caring for patients with digestive health concerns. He earned his medical degree from the University of Massachusetts Medical School and completed his residency at the University of Connecticut Health Center. His extensive experience spans both gastroenterology and internal medicine, allowing him to provide comprehensive care for a wide range of digestive and general health conditions. Dr. Nitzberg communicates with patients in English.

Dr. Nitzberg practices at Holy Family Hospital in Methuen and Merrimack Health Lawrence Hospital, maintaining affiliations with both Merrimack Health Methuen Hospital and Merrimack Health Lawrence Hospital. He specializes in treating colon polyps, hemorrhoids, and diverticular disease. His procedural expertise includes performing colonoscopies, lower GI endoscopies, and upper GI endoscopies to help diagnose and treat digestive conditions. Patients have given him an average rating of 3.2 on Vitals.
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Overview based on verified provider data

Quick Facts

  • 3.2
  • 37 years of experience
  • speaks English
  • University Of Connecticut Health Center
  • 3 written reviews
  • 2 specialties
  • 11 areas of expertise
  • 2 hospital affiliations
  • 2 office locations
  • Male

Patients’ Perspective

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

Office Locations

Dr. Mark Charles Nitzberg has 2 locations

Merrimack Health Lawrence Hospital

1 General StLawrence, MA 01841

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Dr. Mark Charles Nitzberg, MDAshley Anderson, APRNTheresa Obonyano, APRNJan Seiler, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients
3.2 
37 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English Speaks English
Methuen , MASacramento , CASacramento , CAMontgomery , AL
Med School: University Of Massachusetts Medical School Med School: East Tennessee State University - Quillen College of Medicine Med School: The University of Texas Health Science Center at Houston Med School: Georgia State University
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Insurance Plans Accepted by Dr. Mark Charles Nitzberg

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

Medical Specialties

Dr. Mark Charles Nitzberg has the following 2 specialties

Specialty Expertise

Dr. Mark Charles Nitzberg 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

37 Years Experience

Dr. Mark Charles Nitzberg holds expired and active medical licenses in the states of Massachusetts and New Hampshire.

Medical License

Medical Doctor with an expired medical license in the state of Massachusetts that expired in 2026 and an active medical license in the state of New Hampshire that expires in 2027.

Education & Training

Residency

Completed their residency at University Of Connecticut Health Center.

Medical School

Graduated from University Of Massachusetts Medical School in 1989.

NPI Number

Dr. Nitzberg's NPI number is 1881652758.

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Frequently Asked Questions

Where is Dr. Mark Nitzberg's office located?
Dr. Mark Nitzberg's office is located at 70 East St, Methuen, MA, 01844.
Does Dr. Mark Nitzberg accept virtual/telehealth appointments?
Dr. Mark Nitzberg has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. Mark Nitzberg affiliated with?
Dr. Mark Nitzberg is affiliated with Merrimack Health Methuen Hospital and Merrimack Health Lawrence Hospital.
Does Dr. Mark Nitzberg accept my insurance?
You can see the insurance plans that Dr. Mark Nitzberg accepts on their Vitals profile.
What languages does Dr. Mark Nitzberg speak?
Dr. Mark Nitzberg speaks English.

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