Dr. Thomas Dunzendorfer, MD | Gardner, MA | Gastroenterologist

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Dr. Thomas Dunzendorfer is a gastroenterologist with additional expertise in internal medicine and endocrinology, diabetes and metabolism. He earned his medical degree from Goethe-Universitaet Frankfurt Am Main Fachbereich Medizin and has practiced medicine for 39 years. Dr. Dunzendorfer speaks both Chinese and Spanish, allowing him to communicate with patients from diverse backgrounds.

Dr. Dunzendorfer is affiliated with several hospitals including Berkshire Medical Center, Athol Hospital, and Heywood Hospital, with practice locations in Gardner and Athol, Massachusetts. He specializes in treating conditions such as colon polyps and diverticular disease. His procedural expertise includes performing colonoscopies and both upper and lower gastrointestinal endoscopies to diagnose and treat digestive system disorders. Patients rate Dr. Dunzendorfer 4.2 out of 5 stars on average.

Overview based on verified provider data

accepting new patients
4.2

19 Ratings
39 years of experience
speaks Chinese, Spanish
Goethe-Universitaet Frankfurt Am Main Fachbereich Medizin
5 written reviews
3 specialties
12 areas of expertise
3 hospital affiliations
3 office locations
Male

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

Based on patient feedback. Read the reviews

Dr. Dunzendorfer's Ratings and Reviews

4.2

19 Ratings with 5 written Reviews

Average Wait Time 18 Minutes

How was your appointment with
Dr. Dunzendorfer?

Patients’ Perspective

Gave an accurate diagnosis: (6) Did WellNeeds Improvement (1)
Had a good bedside manner: (5) Did WellNeeds Improvement (2)
Spent time with me: (5) Did WellNeeds Improvement (2)
Provided follow-up after the visit: (6) Did WellNeeds Improvement (2)
Flexible scheduling: (4) Did WellNeeds Improvement (2)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

19 ratings & reviews

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Showing 1 to 5 of 5 reviews

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Dr. Dunzendorfer is an amazing doctor. He is extremely compassionate, intelligent, efficient and methodical in his practice. I had a colonoscopy and endoscopy performed on the same day and everything went smooth from start to finish. I would recommend him to anyone.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit

Needs Improvement

June 22nd, 2023

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Dr. Dunzendorfer is a Dr. You can trust. he's very bright and listens. Has a mind like a steel trap.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

October 13th, 2017

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Dr. Dunzendorfer and his entire staff are wonderful. I am 87 years strong with his encouragement and wisdom.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

September 19th, 2015

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Does not spend any time with you. After my procedure, I read reason for colonoscopy: diarrhea. Never had/complained about this. It was supposed to be for constipation. He took several biopsies for colitis! This is the medical term for diarrhea. Also was having severe upper/lower pain. I asked for an endoscopy. He said, "That's not what you complained about." Before I could say anything else, he is scurrying away. I asked, "What about this pain? And where do I go from here "? Not wanting to answer, he said, "See a g.y.n." I did with no avail. Still in chronic pain. Now going back to my primary. I do not recommend any female to seek this dt. He has a very rude disposition.

Did Well

Needs Improvement

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

August 25th, 2015

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Very Good! absolutely brilliant

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

March 24th, 2013

Heywood Gastroenterology

250 Green St Ste 104Gardner, MA 01440

Tel: (978) 669-5522

Mon8:00 am - 4:00 pm

Tue8:00 am - 4:00 pm

Wed8:00 am - 4:00 pm

Thu8:00 am - 4:00 pm

Fri8:00 am - 4:00 pm

SatClosed

SunClosed

Heywood Hospital

242 Green StGardner, MA 01440

Tel: (978) 632-3420

Athol Hospital

2033 Main StAthol, MA 01331

Tel: (978) 249-3511


Dr. Thomas Dunzendorfer, MD	Theresa Obonyano, APRN	Ashley Anderson, APRN	Jan Seiler, APRN
Gastroenterology	Gastroenterology	Gastroenterology	Gastroenterology
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
4.2 (19 Ratings)	0 (0 Ratings)	0 (0 Ratings)	0 (0 Ratings)
39 Years of Experience
No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available	Virtual Visit Available
Speaks Chinese, Spanish	Speaks English	Speaks English	Speaks English
Gardner , MA	Sacramento , CA	Sacramento , CA	Montgomery , AL
Med School: Goethe-Universitaet Frankfurt Am Main Fachbereich Medizin	Med School: The University of Texas Health Science Center at Houston	Med School: East Tennessee State University - Quillen College of Medicine	Med School: Georgia State University
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Accepts Medicare
Accepts Medicaid

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

Dr. Thomas Dunzendorfer holds an expired medical license in the state of Massachusetts.

Medical License

Medical Doctor with an expired medical license in the state of Massachusetts that expired in 2025.

Education & Training

Medical School

Graduated from Goethe-Universitaet Frankfurt Am Main Fachbereich Medizin in 1987.

NPI Number

Dr. Dunzendorfer's NPI number is 1194786210.

Jonathan M Lowenthal
Diagnostic Radiology
7 Years Exp | New Brunswick, NJ
(0)
Tatiana Lucia Westfall
Infectious Disease
| Warwick, RI
(0)
Vidisha Desai
Critical Care Medicine
4 Years Exp | Worcester, MA
(0)
Arhant Rao
Critical Care Medicine
8 Years Exp | Worcester, MA
(0)
Hannah Lin
Diagnostic Radiology
5 Years Exp | Worcester, MA
(0)
Akuvi Claude Gildas Aurore Adossou
Diagnostic Radiology
8 Years Exp | Worcester, MA
(0)
Mehboob Ahmed Rehan
Infectious Disease
24 Years Exp | Wichita Falls, TX
(0)
Dr. Shilpa Arun Deshmukh, MD
Endocrinology, Diabetes & Metabolism
16 Years Exp | Worcester, MA
(0)
Dr. Thomas Andrew Gould, DO
Internal Medicine
41 Years Exp | Worcester, MA
(0)
Brianna Rose Eble
Internal Medicine
| Lowell, MA
(0)

Where is Dr. Thomas Dunzendorfer's office located?: Dr. Thomas Dunzendorfer's office is located at 250 Green St Ste 104, Gardner, MA, 01440.
Does Dr. Thomas Dunzendorfer accept my insurance?: You can see the insurance plans that Dr. Thomas Dunzendorfer accepts on their Vitals profile.
Does Dr. Thomas Dunzendorfer accept virtual/telehealth appointments?: Dr. Thomas Dunzendorfer has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Dr. Thomas Dunzendorfer accepting new patients?: Dr. Thomas Dunzendorfer is accepting new patients on Vitals. View Dr. Thomas Dunzendorfer's profile on Vitals to make an appointment.
Which hospitals is Dr. Thomas Dunzendorfer affiliated with?: Dr. Thomas Dunzendorfer is affiliated with Berkshire Medical Center, Athol Hospital, and Heywood Hospital.

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