Dr. Mark D. Noar M.D., Gastroenterologist

Dr. Mark D. Noar M.D.

Gastroenterologist | Gastroenterology

7402 York Road Suite 100-104 Towson Maryland, 21204



Mark D. Noar, MD, maintains a position at The Endoscopy Center of Towson, Maryland. Dr. Noar is a gastroenterologist certified by the esteemed American Board of Internal Medicine. He has over 30 years of experience specializing in gastroenterology, endoscopic correction of reflux, inflammatory bowel disease, and fecal incontinence. Speaking within the local medical community, Dr. Noar additionally is on staff at the prestigious Johns Hopkins University Montgomery County Campus.

Education and Training

Central University of the East

School of Medicine

Univ Central Del Este (Uce)- Esc De Med- San Pedro De MacOris 1981

Universidad Central del Este (UCE) Facultad de Medicina 1981

Board Certification

American Board of Internal Medicine-Gastroenterology

Provider Details

MaleEnglish 39 years of experience
Dr. Mark D. Noar M.D.
Dr. Mark D. Noar M.D.'s Expert Contributions
  • What could be the cause of my bloating and nausea?

    There can be many reasons for bloating and nausea. Considering that you were recently jaundiced it is likely that the reason for the bloating and nausea is related. As an example, if the jaundice was due to the passage of gallbladder stones or sludge, gallbladder disease alone can't present as bloating and nausea following meals. In addition, if your liver is swollen due to other causes that led to the jaundice, just the enlargement alone can make you feel bloated and potentially even nauseated. Finally, there are a host of other conditions that may not be related to the jaundice, and that could include gastroparesis or gastric motility disturbance, constipation, small bowel bacterial overgrowth, to name really just a few. Mark Noar mdnoar@verizon.net READ MORE

  • Are there any tablets recommended for GERD?

    In your question, you mentioned two distinctly different symptoms: one of esophageal burning consistent with reflux, and the other nausea, which is indicative of either a stomach inflammatory condition or ulceration, or the possibility of stomach motility disturbance. Both these conditions require further investigation for proper recommendation of medication. If you wanted to try something simple, you could try some over-the-counter Zantac or Pepcid to see if it gave you the desired effect. If the medication does not work, or you find that you require the medication for constant use, you really should be seen by a gastroenterologist for further diagnosis. Mark Noar READ MORE

  • My mother in law gets nauseous every time she merely finishes a meal. What could be the reason?

    There are a number of different reasons that could be causing the symptoms. The differential diagnosis includes gallbladder disease, gastritis or ulcer disease, and especially gastroparesis or other gastric motility disturbance related to the diabetes. Mark Noar READ MORE

  • How can celiac disease be diagnosed?

    With specific regard to your question of how can celiac disease be diagnosed, in particular because of your son's reaction to when he eats bread, there are a number of ways this can be done. There are some blood tests that can be performed initially and if positive, then you have the diagnosis. If the blood tests are negative, then it may be necessary to consider an endoscopy with a biopsy of the small bowel and intestinal lining to confirm the diagnosis. Mark Noar READ MORE

  • I have a weird sensation in my upper chest and throat. Is it a sign of concern?

    The symptoms that you are describing are most consistent with gastroesophageal reflux disease, especially the subtype known as LPR, or laryngopharyngeal reflux. While this is typically a benign condition, it could be a signal of more serious underlying conditions such as ulceration of the esophagus, or even early malignancy. Other possibilities include infectious agents such as yeast, inflammatory changes caused by the use of other medication or other inflammatory conditions such as the development of a stricture or a condition known as eosinophilic esophagitis. With these type symptoms, it is advisable to see a gastroenterologist and to undergo an upper endoscopy to diagnose the actual condition and therefore allow more personalized therapy. Mark Noar READ MORE

  • Is surgery the only way to remove a gallbladder stone?

    It is not always necessary to undergo surgery in order to correct a gallbladder problem such as gallstones. Another approach is to consider gallstone dissolution therapy, which is oral medication designed to slowly dissolve stones over time. However, before considering this option, you will need to have a functioning gallbladder. In this case, an HIDA scan would need to be performed showing in ejection fraction of 20% or greater. If ejection fraction is low, then gallstone dissolution therapy is often not effective. When the ejection fraction is greater than 20%, I have found a better than 50% success rate in dissolving gallbladder stones and sludge over a one-year period of time. Mark Noar READ MORE

  • My mother in law is having a low appetite and feels nausea even when she eats little. Why is it happening?

    There are number of potential diagnoses that come to mind. My short list differential regardless of the creatinine clearance issue includes: gallbladder disease, gastritis, or gastric ulcer, gastroparesis or other gastric motility disorders. Many with renal failure issues may especially be subject to gastritis or duodenitis or ulcer disease as well as gastric motility issues. Immediate diagnostic evaluation should include upper endoscopy as well as gastric emptying Electrogastrography. Gallbladder studies will also need to be done. Mark Noar READ MORE

Areas of expertise and specialization

Gastroenterology/Endoscopic Correction of Reflux/Inflammatory Bowl Disease/Fecal Incontinence

Faculty Titles & Positions

  • Local lecturing and public speaking. -


  • Crohn's Disease
  • Acid Reflux
  • Colon Polyps
  • Gallstones
  • Pain
  • Gas
  • Vascular Disease


  • U Hosp-Suny Hlth S C-Bklyn, Gastroenterology; Univ Of Ne Coll Of Med, Internal Medicine
  • SUNY Upstate Medical University Program
  • University of Nebraska�Lincoln

Faculty Titles & Positions

  • U Hosp-Suny Hlth S C-Bklyn, Gastroenterology; Univ Of Ne Coll Of Med, Internal Medicine
  • SUNY Upstate Medical University Program


  • Beth Israel Medical Center


  • University Medical Center Hamburg-Eppendorf

Professional Society Memberships

  • The American Society for Gastrointestinal Endoscopy, American Gastroenterological Association, American College of Gastroenterology

Hobbies / Sports

  • Family, soccer, running, squash, orchid cultivation, horseback riding

Favorite professional publications

  • New England Journal of Medicine, The Journal of Diseases of the Esophagus, The Journal of Gastrointestinal Endoscopy

Hospital Affiliations

  • Johns Hopkins University Montgomery County Campus

Accepted Insurance

+ See all 10 Insurance

Dr. Mark D. Noar M.D.'s Practice location

The Endoscopy Center, Inc

7402 York Road -
Towson, Maryland 21204
Get Direction

7402 YORK RD -
TOWSON, MD 21204
Get Direction
New patients: 410-494-1846
Fax: 410-828-1706

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Dr. Mark D. Noar M.D.'s reviews

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Patient Experience with Dr. Noar


Based on 28 reviews

Dr. Mark D. Noar M.D. has a rating of 5 out of 5 stars based on the reviews from 28 patients. FindaTopDoc has aggregated the experiences from real patients to help give you more insights and information on how to choose the best Gastroenterologist in your area. These reviews do not reflect a providers level of clinical care, but are a compilation of quality indicators such as bedside manner, wait time, staff friendliness, ease of appointment, and knowledge of conditions and treatments.
  • George

    I am so happy! I brought my husband in who is deaf. Thank goodness we caught lies polyps before he got cancer. Dr. and his staff treated him so thoughtfully.

  • John

    The Doctor is very professional. The staff and entire operation was great acne made me feel comfortable....and the music was amazing as usual.

  • Regina

    I am so relieved....finally an explanation for my bronchitis and sore throat..it is reflux. Dr. Noar confirmed it and I will now get better...after so many doctors I have my answer and can get fixed!

  • Corey

    Very nice overall experience. Staff is so amazing...I felt like I was the only one there. Doc was attentive and Good explanations.

  • Amy

    Very cohesive staff. Doctor made me feel confident in diagnosis and. Testing

  • Ryan

    First time here and the staff was professional. Doctor explained everything well.

  • Donald

    I have been having problems with severe pain and have been to three other gi docs in the area and all the testing was negative and no one could help me. At a family party I was told about Dr. Noar. It turns out most of my family sees him and raves about his staff too. Today I see why....I had a gallbladder problem and he found it on the first try. I am so grateful.

  • Jacqueline g.

    Dr. Noar is the top of the line. His staff rocks on and Tony Graham the anesthesia guy was amazing. I feel so comfortable here!

  • Linda w.

    I have been having pain for years since my gallbladder was taken. I just had an endoscopic ultrasound and the Dr. Said it was not my bile duct and just adhesions. At least now I know. Everyone else thought I was crazy and he believed in me,

  • Sandra

    Had my Stretta 3 years ago and still reflux free. My endoscopy today showed I was normal! Dr. Noar is the best and such a great staff...sweet as can be.

  • Alex

    Back today for a 5 year colonoscopy. Staff and Doctor as kind and professional as 5 years ago. With the all the changes in the world today it was nice to have consistency especially with this type of procedure.

  • Melinda

    Very informative interview. Great staff. Took a lot of time to explain my disease and to help me make it work. I have to come back due to ulcers but no Eason to worry!üòÖ

  • Gina

    A first time visit today for colonoscopy. Staff and Doctor made me feel comfortable. Will recommend all my friends.

  • stefan

    I have suffered for years with throat pain and reflux. No one would take my concerns seriously, and Dr. Noar told me it was reflux. I travelled from Taiwan to have him treat me with the Stretta and I am completely better. He is the best in his field for a good reason!

  • Jim

    Super staff. Doctor listened to all my questions and really explained it well to my wife and I. I will recommend to all my friends!

  • (5)

    This was my first visit to this office and I highly recommend there services from the office to my procedure thank you so much

  • (5)

    Very nice staff and operation. Doctor was kind and explained everything. I feel much better.

  • Crystal

    I had a positive experience when I was here for my endoscopy.

  • (5)

    Positive experience

  • J

    Felt taken care of by the doctor and his staff.

  • Diana

    Top notch service

  • C

    Pleasant experience

  • (5)

    Great doctor. Very efficient and good with patients.

  • (5)


  • (5)

    Really made me feel comfortable. I came here because he was supposed to be one of the best. He and staff exceeded expectations. I have hope again that I will get better.

  • Lindsey

    Great office

  • (5)

    Good experience

  • Brittany

    Excellent staff and wonderful physician

  • + Show More

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