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Melissa Leyva
out of 5
  • Pediatric Gastroenterology
Accepting new patients


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75 E. Northfield Road Pediatric Gastroenterology

75 E. Northfield Road
Livingston, NJ 07039
United States

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19-21 Fair Lawn Avenue Pediatric Gastroenterology

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

Clinical Expertise

  • flatulence
  • Abdominal Pain
  • Abnormal weight loss
  • Acute pancreatitis
  • Barrett's esophagus
  • Bile duct diseases
  • Celiac disease
  • Cholecystitis
  • Chronic pancreatitis
  • Colitis
  • Colon and rectal bleeding
  • Colonoscopy
  • Constipation
  • Crohn's disease
  • EoE
  • Fatty liver
  • Feeding tube (percutaneous endoscopy gastrostromy (PEG) management
  • Gallbladder problems
  • Gallstones
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal bleeding
  • Gastroparesis
  • Heartburn
  • Hemorrhoids
  • Hepatitis B
  • Hepatitis C
  • IBD
  • Indigestion
  • Inflammatory bowel disease
  • Irritable bowel syndrome (IBS)
  • Lactose intolerance
  • Liver disease
  • Nausea
  • Obesity
  • Pancreatic insufficiency
  • Peptic ulcer
  • Rectal bleeding
  • Reflux
  • SBBO
  • SIBO
  • Stomach ulcers
  • Ulcerative colitis
  • Viral hepatitis
  • Vomiting
  • acid reflux
  • biliary atresia
  • childhood obesity
  • chronic vomiting
  • colic
  • cyclic vomiting
  • dark or black stool
  • delayed gastric emptying
  • difficulty potty training
  • difficulty toilet training
  • elevated liver enzymes
  • encopresis
  • endoscopy
  • eosinophilic disorders of GI tract
  • eosinophilic esophagitis
  • feeding difficulties
  • feeding refusal
  • food intolerance
  • fullness after few bites of food
  • g-tube management
  • gassiness
  • gastrostromy (PEG) management
  • gluten intolerance
  • halitosis
  • helicobacter pylori
  • inflammation of esophagus
  • inflammation of stomach
  • intestinal parasite
  • nonalcoholic fatty liver disease
  • poor weight gain
  • small bowel bacterial overgrowth
  • small intestinal bacterial overgrowth
  • stool analysis
  • underweight
  • upper gi endoscopy
  • vomiting blood

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.

  • Aetna Medicare PrimeAetna Signature Administrators
  • HMO
  • Meritain
  • Open Access
  • POS
  • AHS - SMG is Tier 1
  • APCN - Aetna Premier Choice Network
  • Axcel Choice POS II
  • Axcel Open Access
  • Choice POS II
  • EPO Select
  • HNO - Health Network Option
  • Liberty - SMG is Tier 1
  • Medicare Advantage - HMO, PPO
  • Choice
  • PPO
  • Signature PPO
  • Assure Premier Plus
  • EPO
  • PPO
  • HMO
  • POS
  • Open Access
  • Open Access Plus
  • Local Value
  • Tiered Advantage
  • Advantage
  • HMO Plus
  • POS Plus
  • Regional Preferred
Blue Cross and Blue Shield
  • Horizon BCBS NJ
  • Empire/Anthem BCBS PPO
  • Federal Program
  • Medicare Advantage
  • Out-of-State BCBS PPO Blue Card
  • PPO
  • HMO
  • Open Access
  • Cigna Health Plan (CHP)
  • Choice Fund
  • Indemnity
  • International
  • Open Access Plus
CHN - Consumer Health Network
Clover Medicare Advantage
  • All Plans
Coventry Health Plans
First Health
  • All Plans with First Health Logo
Humana Medicare Advantage
  • PPO
  • Traditional Medicare
  • Railroad Medicare
  • Medicare Supplemental Plans
  • Medicare Advantage PPO
  • All plans PPO
  • Multiplan/PHCS logo on card - PPO
Oxford Healthplan
  • Freedom
  • Liberty
  • Medicare Advantage
  • Qualcare logo on card
  • OSCAR NJ Individual and Family Plan
  • Qualcare logo on card
  • PPO
  • EPO
  • Community Care Network
  • Emblem Health (with Qualcare logo)
  • HIP Prime (with Qualcare logo)
  • Traditional Plan
United Healthcare
  • AARP Medicare Complete - HMO, PPOChoice
  • Choice Plus
  • HMO
  • Navigate - EPO, HMO, POS
  • PPO

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 Medical Group'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 Medical Group, Dr. Leyva served as attending Pediatric Gastroenterologist at Hackensack Meridian Health. Dr. Levya 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

Awards and Honors

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