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Melissa Leyva
out of 5
  • Pediatric Gastroenterology
Accepting new patients

Appointments: Call 973-436-1770


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75 E. Northfield Road Pediatric Gastroenterology

75 E. Northfield Road
Livingston, NJ 07039
United States

Location Pin Icon

19-21 Fair Lawn Avenue Pediatric Gastroenterology

19-21 Fair Lawn Avenue
Fair Lawn, NJ 07410
United States

Clinical Expertise

  • Abdominal Pain
  • Abnormal weight loss
  • Acid reflux
  • Acute pancreatitis
  • Barrett's esophagus
  • Bile duct diseases
  • Biliary atresia
  • Celiac disease
  • Childhood obesity
  • Cholecystitis
  • Chronic pancreatitis
  • Chronic vomiting
  • Colic
  • Colitis
  • Colon and rectal bleeding
  • Colonoscopy
  • Constipation
  • Crohn's disease
  • Cyclic vomiting
  • Cystic Fibrosis
  • Delayed gastric emptying
  • Diarrhea
  • Difficulty toilet training
  • Elevated liver enzymes
  • Encopresis
  • Endoscopy
  • Eosinophilic disorders of GI tract
  • Eosinophilic esophagitis
  • Esophagitis
  • Failure to thrive
  • Fatty liver
  • Feeding difficulties
  • Feeding refusal
  • Feeding tube (percutaneous endoscopy gastrostomy (PEG) management
  • Flatulence
  • Food allergies
  • Food intolerance
  • Gallbladder problems
  • Gallstones
  • Gassiness
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal bleeding
  • Gastroparesis
  • Gastrostomy (PEG) management
  • Gluten intolerance
  • Halitosis
  • Heartburn
  • Helicobacter pylori
  • Hemorrhoids
  • Hepatitis B
  • Hepatitis C
  • IBD
  • Indigestion
  • Inflammation of esophagus
  • Inflammatory bowel disease (IBD)
  • Intestinal parasite
  • Irritable bowel syndrome (IBS)
  • Lactose intolerance
  • Liver disease
  • Mycobacterial disease
  • Nausea
  • Obesity
  • Pancreatic insufficiency
  • Peptic ulcer disease
  • Poor weight gain
  • Rectal bleeding
  • Rectal prolapse
  • Small bowel bacterial overgrowth
  • Stomach ulcers
  • Stool analysis
  • Underweight
  • Upper GI Endoscopy
  • Viral hepatitis
  • Vomiting

Accepted Insurances

Always check with your health insurance carrier before scheduling any type of service. You can learn the details of your individual health insurance plan, including the amount of your copay, deductible, and coinsurance by visiting your health insurance company's website or by calling their customer service department. Click here to review our list of accepted insurance plans.

Training and Education

Board Certification

  • American Board of Pediatrics, Gastroenterology and Nutrition Sub-board
  • American Board of Pediatrics

Medical School

  • Albert Einstein College of Medicine, New York, NY


  • Biological Basis of Behavior, University of Pennsylvania, Philadelphia, PA
  • Pre-medical Studies, City College of New York, New York, NY


  • Pediatrics, UMDNJ - Robert Wood Johnson Medical School, New Brunswick, NJ


  • Pediatric Gastroenterology, Hepatology, and Nutrition, Children's Hospital of Philadelphia, Philadelphia, PA

About Me

Melissa Leyva, MD is a member of Summit Health's Pediatric Gastroenterology team. Dr. Leyva treats a wide range of pediatric gastrointestinal (GI) conditions, including constipation, abdominal pain, reflux, celiac disease, eosinophilic esophagitis, feeding issues, and inflammatory bowel disease (IBD).

She has a special interest in non-alcoholic fatty liver disease (NAFLD) and other GI complications of obesity. In addition, she also provides care to patients with a wide range of liver disorders, including auto-immune hepatitis, biliary atresia, and chronic hepatitis B and C.

“As a caregiver, I enjoy educating my patients and their parents so that they feel empowered to work towards better health,” says Dr. Leyva. “I utilize a child-centered approach and believe in partnering with families to provide compassionate and up-to-date care.”

Dr. Leyva is a board-certified pediatric gastroenterologist. She is a member of the North American Society of Pediatric Gastroenterology Hepatology and Nutrition (NASPGHAN). Dr. Leyva has published articles and abstracts in various prestigious, peer-reviewed scientific journals including Gastroenterology, American Journal of Medical Genetics, and Ambulatory Pediatrics.

Among her many honors and awards is the NASPGHAN Fellows Research Award. She has also been recognized by New Jersey Family Favorite Kid’s Docs and Bergen County’s Top Docs for pediatric gastroenterology.

Prior to joining Summit Health, Dr. Leyva served as attending Pediatric Gastroenterologist at Hackensack Meridian Health. Dr. Leyva is a graduate of Albert Einstein College of Medicine in NY and completed her fellowship at Children’s Hospital of Philadelphia.

When not seeing patients in the office, Dr. Leyva enjoys spending time outdoors biking and hiking with her two boys.

English, French, Spanish

Hospital Affiliations

  • Morristown Medical Center

Awards and Honors

  • Top Doctors 2020
  • Bergen County's Top Docs 2019
  • NJ Fave kids doc