To request an appointment, please fill out the form below or call:

(978) 287-3835

Our Services

We Understand What You Feel Like

GI (gastroenterology) symptoms are very common. One in four people experiences stomach issues that get in life’s way. You do not have to suffer alone. You can manage your symptoms with an experienced team of GI experts who provide personalized care.

All Your GI needs in One Place

Emerson's gastroenterology specialists treat a wide range of GI issues involving the esophagus, stomach, intestines, liver, biliary tract, gallbladder, pancreas, colon and rectum.

  • Acid reflux (gastroesophageal reflux disease/GERD)
  • Barrett’s esophagus
  • Celiac-sprue (gluten intolerance)
  • Chronic diarrhea
  • Colorectal cancer
  • Diverticulitis
  • Esophageal cancer
  • Fecal incontinence
  • Gallstones
  • Hemorrhoids
  • Inflammatory bowel disease, including Crohn’s disease and ulcerative colitis
  • Irritable bowel syndrome and chronic severe constipation
  • Jaundice
  • Liver disease, including hepatitis C and cirrhosis
  • Pancreatic cancer
  • Peptic ulcers
  • Rectal prolapse

John G. Dowd, DO 

"In my nearly 25 years of practicing medicine, I have learned that listening to my patients is one of the most powerful and effective tools I possess to diagnose and treat their digestive tract issues."

John G. Dowd, DO
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Emerson Health Gastroenterology

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We Are Here to Listen


Trust Your Gut

If you plan your life around how your stomach feels, it is time to see a trusted GI doctor.

At Emerson Health, our Gastroenterology doctors listen closely and take time to get to the root of your stomach problems so you can get back to living life.

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Our Location

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Health Risk Assessment

What is Your GERD Risk?

Take our FREE online quiz to find out your risk of suffering from prolonged health effects from frequent heartburn and indigestion.

Start Your Free Online Assessment

A Patient's Journey

Kacie's Story

Kacie Babbit, an accomplished equestrian who attends Bryant University, has suffered from stomach pain for more than a decade. Learn more about her road to recovery.

Read Kacie's Story
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Jennifer Nayor, MD

"Learning about my patients’ lives outside of our clinic visit helps me better understand their symptoms and craft a personalized treatment plan. Every patient is unique and deserves individualized care."

Jennifer Nayor, MD
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Andrea Fribush, MD

"We are here to provide you with outstanding, personalized care. Whether you have a routine concern, or it's time for your screening colonoscopy, or you have a complex issue, we take an individualized approach."

Andrea Fribush, MD
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About Stomachaches
In this podcast episode, Dr. Dowd speaks to the causes of stomachaches.


5 Common GI Issues
Everyone has a rumbling stomach now and then. But some digestive problems can be more serious – and cause for concern.


GI Podcast Episodes
In our podcasts the physicians of Concord GI cover topics from colon cancer screenings to first appointment expectations.


The new Emerson Endoscopy and Digestive Health Center at 310 Baker Avenue, Concord, is now open! The location is just down the road from the main hospital.

With an experienced gastroenterology team and the latest equipment, the Emerson Endoscopy and Digestive Health Center provides innovative and conventional ways to diagnose and manage all types of digestive diseases in a state-of-the-art outpatient setting. Routine screenings, such as colonoscopies, are also available.

Emerson Health Endoscopy and Digestive Health Center
310 Baker Avenue, Suite 175A
Concord, MA 01742

(978) 287-3835Get Directions

Now Open

New Endoscopy and Digestive Health Center in Concord

Committed to Your Safety

Emerson Health is committed to providing the expert medical care you need in a safe environment. The measures implemented at our location include: increasing our quantity of PPE, performing staff screenings, thorough and enhanced cleaning, updating common areas to allow for social distancing, encouragement of hand hygiene, and enhanced infection control policies.

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Julio Ayala, MD
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Julio Ayala, MD

"Powerful tools for personalized care are listening, helping patients understand their symptoms, taking time to explain their care plan, and reassuring them that we are here for support."

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Five-star care. From people who care.

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Julio Ayala, MD
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Tanya Khan, MD

"I approach patient care as a partnership. Taking the time to better understand my patients’ needs and symptoms in the context of their lives allows me to create individualized treatment plans in line with the latest evidence in the field. It is an absolute privilege to serve the Emerson community."