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Dr. Mark Detweiler, MD

Gastroenterology ·  Male · Age 66

Dr. Detweiler

Londonderry Gastroenterology

1B Commons Dr Unit 9A Londonderry, NH 03053

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Dr. Mark Detweiler, MD is a gastroenterology specialist in Londonderry, NH and has been practicing for 35 years. He graduated from Pennsylvania State University College Of Medicine in 1979 and specializes in gastroenterology, holistic medicine, and more.


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(603) 818-4712

Dr. Detweiler accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
AvMed
Open Access
Blue Cross Blue Shield
Blue Card PPO
Cigna
Cigna HMO
Cigna PPO
Great West Healthcare-Cigna PPO
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Harvard Pilgrim Health Care
Harvard Pilgrim Health Care PPO
Humana
Choice Care PPO
Medicare
Special Needs Plan SNP
Tricare
TriCare for Life
UnitedHealthCare
Choice Plus POS
Options PPO

Background Check

Healthgrades does not collect malpractice claims information for New Hampshire
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
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Experience Check

Check Dr. Detweiler's experience treating your condition or procedure

Dr. Detweiler's Top Procedures and Conditions

Treatment Frequency
Gas-Bloat Syndrome
very high
very high

Treatment Frequency

Dr. Detweiler treats Gas-Bloat Syndrome more than 94% of his peers

Dr. Detweiler treats this condition more than 94% of his peers

Diarrhea
very high
very high

Treatment Frequency

Dr. Detweiler treats Diarrhea more than 92% of his peers

Dr. Detweiler treats this condition more than 92% of his peers

Dysentery
high
high

Treatment Frequency

Dr. Detweiler treats Dysentery more than 89% of his peers

Dr. Detweiler treats this condition more than 89% of his peers

Dr. Detweiler's conditions and procedures:

  • Abdominal Disorders
  • Abdominal Pain
  • Abscess
  • Anal or Rectal Pain
  • Anemia
  • Autoimmune Diseases
  • Bacterial Infections of the Digestive Tract
  • Candida Albicans Fungus Allergy
  • Celiac Disease
  • Cirrhosis
  • Colitis
  • Colon Disorders
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Enteritis
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Diseases
  • Esophageal Ulcer
  • Esophagitis
  • Fungal Infections
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastroparesis
  • Gluten Sensitivity
  • Heartburn
  • Hemochromatosis
  • Hemorrhoids
  • Hepatic Encephalopathy
  • Hepatitis
  • Hepatitis C
  • Hepatopulmonary Syndrome
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Abscess
  • Invasive Candidiasis
  • Irritable Bowel Syndrome
  • Lactose Intolerance
  • Liver Damage from Alcohol
  • Malnutrition
  • Nausea
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Non-Neonatal Jaundice
  • Pancreatitis
  • Peptic Ulcer
  • Pyloric Stenosis
  • Reflux Esophagitis
  • Stomach and Small Intestine Cancer
  • Stomach Cancer
  • Stomach Diseases
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Hepatitis
  • Vomiting Disorders

About Me

Care Philosophy

I am a doctor who takes time to listen to your concerns, and includes you in making decisions abut your care. When possible I prefer to avoid antibiotics and other prescription medications as they the often have unwanted side effects. I also prefer to treat the root cause of a problem rather than bandage over the symptoms.

Specialties

  • Gastroenterology
  • Applied Clinical Nutrition
  • Holistic Medicine

Board Certifications

  • Gastroenterology
  • Internal Medicine

Education

1984
University Utah Med Center
Fellowship Hospital
1981
University Vt Med Center Hospital
Residency Hospital
1980
University Vt Med Center Hospital
Internship Hospital
1979
Pennsylvania State University College Of Medicine
Medical School
1975
Lehigh University BS Chemistry
Undergraduate School
1984
1981
1980
1979
1975

Awards

Dr. Detweiler's Reviews

Likelihood to recommend Dr. Detweiler

4.4

Based on 19 reviews

5 Stars
84.21052631578948%
(16)
4 Stars
0%
(0)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
15.789473684210526%
(3)

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Average Reported Wait Time
  • 10 – 15 minutes
Dr. Detweiler's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Mark Detweiler, MD
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Dr Detweiller is thorough, persistent and very knowledgeable. He takes time with his patients. I made no headway with my condition while seeing a gastroenterologist and then two different naturopaths. Treatment with Dr Detweiller has been successful! I’m thrilled that I found him. I recommend him highly.
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I've seen Dr. Detweiler probably 15 times in my life. Every time he's been the epitome of what a modern doctor should be. I would highly recommend Dr. Detweiler for anyone who is having any kind of significant digestive issue - his creative, driven approach has worked quite well for me.
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Dr. Detweiler is extremely thorough and knowledgeable specialist. He explains, in detail, test results, diagnosis, and treatment options. He does not have his own line of suppliments as a previous poster stated. He may make some supplement suggestions, but does not sell them. I have recommended others to see him and they all have been just as impressed with him as i have been.
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Pushes his own supplements that he gets kickbacks on. Not willing to listen or go with what you choose for yourself. Breached my confidentiality. Not a good Dr. Has an anger management issue. See someone else.
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I am so impressed with Dr. D.Years of being dismissed by my sons pediatrician and telling me his symptoms were normal and no big deal left me frustrated; I knew something was not right so I went for another opinion w Dr.D. At the 1st visit he knew something was amiss, we did various tests and found the problem.He explained things to my son so he could understand and how HE Had to take control of his issue and it made a huge impact.Dr D sees both my sons and I could not be more grateful.
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Scary! Received a summary of visit a few days after my appointment. Confused me with another patient. Listed symptoms I never had, but never mentioned the symptoms I did have. Wouldn't return my call. He Got indignant when I told receptionist- no nurses - what happened. Said I could make an additional appointment to get my symptoms right . Guess his mistakes are my fault?
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This patient was not confused with anyone else....Read More
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