
20 Years of Experience
Accepting patients
Who is Dr. Mencin, Pediatric Gastroenterologist in New York, NY?
Dr. Ali Andre Mencin, a general pediatric gastroenterologist, is the Chief of the Division of Pediatric Gastroenterology, Hepatology and Nutrition at NewYork-Presbyterian & Columbia University Irving Medical Center as well as the Director of the Pediatric Fatty Liver Clinic and Pediatric Endoscopy at Columbia. He is an Associate Professor of Pediatrics at Columbia, and is recognized as a Castle Connolly Top Doctor and a New York Super Doctor. Dr. Mencin sees children with a range of digestive diseases including fatty liver disease, inflammatory bowel disease, eosinophilic esophagitis, reflux, abdominal pain, constipation, cyclic vomiting syndrome, feeding difficulties, and polyposis syndromes.
What are Areas of Expertise for Dr. Mencin?
Dr. Ali Mencin, MD is a highly-rated, board-certified Pediatric Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Mencin empowers patients to confidently navigate their health journey, specializing in Endoscopy, Eosinophilic Esophagitis, Inflammatory Bowel Disease, Liver Disease, and comprehensive wellness support. Serving the New York, NY community, Dr. Mencin is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Mencin go to medical school and complete their residency?
Residency: A Einstein Coll M-Yeshiva U, Pediatrics | Jacobi Medical Center/Albert Einstein College of Medicine Program
Medical School: Mt Sinai Sch of Med of The City Univ of Ny, New York Ny | Icahn School of Medicine at Mount Sinai
Is Dr. Mencin board certified as a Pediatric Gastroenterologist?
Yes, Dr. Ali Mencin, MD is board certified by the American Board of Pediatrics
What languages does Dr. Mencin speak?
Dr. Mencin and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does a Pediatric Gastroenterologist like Dr. Mencin typically treat?
As a Pediatric Gastroenterologist, Dr. Mencin diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Mencin. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Other Feeding Difficulties
- Feeding Difficulties
- Atypical Feeding Problems
- Unusual Eating Issues
- Specific Feeding Challenges
- Eating Problems
- Swallowing Problems
- Unspecified Feeding Issues
ICD-10 Codes:
- R6339: Other feeding difficulties
- R6330: Feeding difficulties, unspecified
Also known as:
- Fatty Liver Disease
- Liver Disease
- Nonalcoholic Fatty Liver Disease (NAFLD) & NASH
- Nonalcoholic Fatty Liver Disease & NASH in Children
- NAFLD
- NASH
- Hepatic steatosis
ICD-10 Codes:
- K760: Fatty (change of) liver, not elsewhere classified
Also known as:
- Eosinophilic Esophagitis
- EoE
- Allergic Esophagitis
- Eosinophilic Inflammation of Esophagus
ICD-10 Codes:
- K200: Eosinophilic esophagitis
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- High Liver Enzymes
- ALT Blood Test
- AST Test
- Elevated ALT
- Elevated AST
- Abnormal liver function test
ICD-10 Codes:
- R7401: Elevation of levels of liver transaminase levels
Also known as:
- Nonalcoholic steatohepatitis (NASH)
- Fatty Liver Disease
- Non-alcoholic fatty liver disease
- Nonalcoholic Fatty Liver Disease (NAFLD) & NASH
- Nonalcoholic Fatty Liver Disease & NASH in Children
- NASH
- Non-alcoholic fatty liver disease with inflammation
- Fatty liver inflammation
ICD-10 Codes:
- K7581: Nonalcoholic steatohepatitis (NASH)
What procedures does a Pediatric Gastroenterologist like Dr. Mencin typically perform?
As a Pediatric Gastroenterologist, Dr. Mencin performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Mencin. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- Gastro-Jejunostomy Tube Replacement
- Percutaneous GJ Tube Replacement
- Feeding Tube Change (GJ)
- GJ Tube Exchange
CPT Codes:
- 49452: Replacement of gastro-jejunostomy tube, percutaneous, under fluoroscopic guidance including contrast injection(s), image documentation and report
Also known as:
- Diagnostic Upper Endoscopy with Biopsy
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
CPT Codes:
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Colonoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
CPT Codes:
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
Also known as:
- Feeding Tube Conversion (Stomach to Small Intestine)
- G-tube to J-tube Conversion
- Percutaneous Gastrostomy Conversion
- Gastro-Jejunostomy Tube Placement
CPT Codes:
- 49446: Conversion of gastrostomy tube to gastro-jejunostomy tube, percutaneous, under fluoroscopic guidance including contrast injection(s), image documentation and report
Also known as:
- Liver Elastography
- Elastography
- FibroScan
- Liver stiffness test
- Shear wave elastography
CPT Codes:
- 91200: Liver elastography, mechanically induced shear wave (eg, vibration), without imaging, with interpretation and report
Also known as:
- Capsule Endoscopy
- Pill Camera
- Wireless Capsule Endoscopy
- Small Bowel Capsule Endoscopy
- Intestinal Imaging Pill
CPT Codes:
- 91110: Gastrointestinal tract imaging, intraluminal (eg, capsule endoscopy), esophagus through ileum, with interpretation and report
Does Dr. Mencin accept my insurance?
Dr. Mencin accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Mencin accept in New York, NY?
Dr. Mencin in New York, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Aetna
Cigna Group
Corporate Services
CVS Health (formerly Aetna)
EmblemHealth
National Benefit Fund
Service Employees International Union (SEIU)
UMR Administered Payer
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Mencin's office located?

Morgan Stanley Children's Hosp of NY-Presbyterian
3959 Broadway
New York, NY 10032
What is Dr. Mencin's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Mencin's National Provider Identifier (NPI) number is 1598718413.
What common questions do patients ask about Dr. Mencin?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Mencin
What is Dr. Ali Mencin's specialty?
Dr. Mencin is a Pediatric Gastroenterologist near New York, NY.
What does a Pediatric Gastroenterologist do?
A pediatrician specializing in diagnosing and treating digestive system diseases in infants, children, and adolescents. This expert manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice and is skilled in performing complex diagnostic and therapeutic procedures using endoscopic techniques to visualize internal organs.
Is this Dr. Ali Mencin affiliated with a ranked Castle Connolly Top Hospital?
No, Mencin is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Newyork-Presbyterian/morgan Stanley Children's Hospital. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Pediatric Gastroenterologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Pediatric Gastroenterologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Ali Mencin accepting new patients in New York, NY?
Yes, Dr. Ali Mencin is accepting new patients at this time.
Does Dr. Ali Mencin offer online booking?
Please contact Dr. Mencin's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Ali Mencin?
Please contact Dr. Mencin's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Ali Mencin have?
Dr. Ali Mencin is certified by the American Board of Pediatrics.
Other Pediatric Gastroenterologist Near New York, NY

Dr. Philip Kazlow, MD is a Pediatric Gastroenterologist, who primarily practices in New York, NY. He is board certified.

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Dr. Sarah Lusman, MD is a Pediatric Gastroenterologist, who primarily practices in New York, NY with 1 additional practice location. She has been practicing for over 14 years and is board certified.

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Dr. Amy Defelice is a Pediatric Gastroenterologist, who primarily practices in New York, NY with 1 additional practice location. She is board certified.

New York Presbyterian-CUMC
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