James F. Markowitz
Experienced in Fecal Impaction

Dr. James F. Markowitz

Pediatric Gastroenterology
Northwell Health
Cohen Children's Northwell Health Physician Partners At Lake Success
1991 Marcus Avenue, Suite M100, 
Lake Success, NY 
On Staff At
Experienced in Fecal Impaction
Northwell Health
Cohen Children's Northwell Health Physician Partners At Lake Success
1991 Marcus Avenue, Suite M100, 
Lake Success, NY 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

James Markowitz is a Pediatric Gastroenterologist in Lake Success, New York. Dr. Markowitz is rated as an Experienced provider by MediFind in the treatment of Fecal Impaction. His top areas of expertise are Viral Gastroenteritis, Crohn's Disease, Hemorrhagic Proctocolitis, Colonoscopy, and Endoscopy.

His clinical research consists of co-authoring 59 peer reviewed articles and participating in 2 clinical trials. MediFind looks at clinical research from the past 15 years.

Graduate Institution
Weill Cornell Medicine Cornell University
Residency
New York Presbyterian Hospital-Weill Cornell
Specialties
Pediatric Gastroenterology
Licenses
Pediatric Gastroenterology in NY
Board Certifications
American Board Of Pediatrics
American Board Of Pediatrics/Gastroenterology
Fellowships
North Shore University Hospital
Hospital Affiliations
North Shore University Hospital
Hofstra/Northwell School Of Medicine/Nursing
Long Island Jewish Medical Center
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Cambia Health Solutions
  • EPO
  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
Health First
  • HMO
  • POS
Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Northwell Health
  • INSURANCE PLAN
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
View 8 Less Insurance Carriers -

Locations

Cohen Children's Northwell Health Physician Partners at Lake Success
1991 Marcus Avenue, Suite M100, Lake Success, NY 11042
Call: 516-472-3650
Other Locations
Cohen Children's Northwell Health Physician Partners Pediatric Specialists at Smithtown
222 Middle Country Road, Suite 106, Smithtown, NY 11787
Call: 631-439-5437

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

2 Clinical Trials

A Randomized, Double-Blind, Phase 3 Study to Evaluate the Efficacy and Safety of Vedolizumab Intravenous as Maintenance Therapy in Pediatric Subjects With Moderately to Severely Active Ulcerative Colitis Who Achieved Clinical Response Following Open-Label Vedolizumab Intravenous Therapy
A Randomized, Double-Blind, Phase 3 Study to Evaluate the Efficacy and Safety of Vedolizumab Intravenous as Maintenance Therapy in Pediatric Subjects With Moderately to Severely Active Ulcerative Colitis Who Achieved Clinical Response Following Open-Label Vedolizumab Intravenous Therapy
Enrollment Status: Completed
Publish Date: October 01, 2025
Intervention Type: Drug
Study Drug: Vedolizumab
Study Phase: Phase 3
Predicting Response to Vedolizumab in Pediatric Inflammatory Bowel Diseases (IBD) Including Drug Levels: a Multi-center Prospective Cohort Study, From the Pediatric IBD Porto Group of European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN)
Predicting Response to Vedolizumab in Pediatric Inflammatory Bowel Diseases (IBD) Including Drug Levels: a Multi-center Prospective Cohort Study, From the Pediatric IBD Porto Group of European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN)
Enrollment Status: Completed
Publish Date: October 25, 2022
Intervention Type: Drug
Study Drug: Vedolizumab
Study Phase: Not Applicable
View 1 Less Clinical Trial

59 Total Publications

Baseline Drug Clearance Predicts Outcomes in Children With Inflammatory Bowel Disease Treated With Vedolizumab: Results From the VedoKids Prospective Multicentre Study.
Baseline Drug Clearance Predicts Outcomes in Children With Inflammatory Bowel Disease Treated With Vedolizumab: Results From the VedoKids Prospective Multicentre Study.
Journal: Alimentary pharmacology & therapeutics
Published: July 14, 2024
View All 59 Publications
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Maria Rivera is a Pediatric Gastroenterologist and a Gastroenterologist in Paterson, New Jersey. Dr. Rivera is rated as an Advanced provider by MediFind in the treatment of Fecal Impaction. Her top areas of expertise are Bowel Incontinence, Lactose Intolerance, Fecal Impaction, and Dubin-Johnson Syndrome.

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Neptune, NJ 
 (63.4 miles away)
Languages Spoken:
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Ivan Darenkov is a Pediatric Gastroenterologist in Neptune, New Jersey. Dr. Darenkov is rated as an Experienced provider by MediFind in the treatment of Fecal Impaction. His top areas of expertise are Fecal Impaction, Genetic Epilepsy with Febrile Seizures Plus (GEFS+), Cerebral Hypoxia, and Croup.

Experienced in Fecal Impaction
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 (42.2 miles away)
718-270-4714
Languages Spoken:
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Radha Nathan is a Pediatric Gastroenterologist and a Pediatrics provider in Brooklyn, New York. Dr. Nathan is rated as an Experienced provider by MediFind in the treatment of Fecal Impaction. Her top areas of expertise are Delayed Growth, Bacterial Gastroenteritis, Fecal Impaction, and Helicobacter Pylori Infection.

VIEW MORE FECAL IMPACTION DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Markowitz's expertise for a condition
ConditionClose
  • Elite
  • Viral Gastroenteritis
    Dr. Markowitz is
    Elite
    . Learn about Viral Gastroenteritis.
    See more Viral Gastroenteritis experts
  • Distinguished
  • Colitis
    Dr. Markowitz is
    Distinguished
    . Learn about Colitis.
    See more Colitis experts
  • Crohn's Disease
    Dr. Markowitz is
    Distinguished
    . Learn about Crohn's Disease.
    See more Crohn's Disease experts
  • Hemorrhagic Proctocolitis
    Dr. Markowitz is
    Distinguished
    . Learn about Hemorrhagic Proctocolitis.
    See more Hemorrhagic Proctocolitis experts
  • Ulcerative Colitis
    Dr. Markowitz is
    Distinguished
    . Learn about Ulcerative Colitis.
    See more Ulcerative Colitis experts
  • Advanced
  • Celiac Disease
    Dr. Markowitz is
    Advanced
    . Learn about Celiac Disease.
    See more Celiac Disease experts
  • Lactose Intolerance
    Dr. Markowitz is
    Advanced
    . Learn about Lactose Intolerance.
    See more Lactose Intolerance experts
  • Experienced
  • Bacterial Gastroenteritis
    Dr. Markowitz is
    Experienced
    . Learn about Bacterial Gastroenteritis.
    See more Bacterial Gastroenteritis experts
  • Bowel Incontinence
    Dr. Markowitz is
    Experienced
    . Learn about Bowel Incontinence.
    See more Bowel Incontinence experts
  • Colonoscopy
    Dr. Markowitz is
    Experienced
    . Learn about Colonoscopy.
    See more Colonoscopy experts
  • Diarrhea
    Dr. Markowitz is
    Experienced
    . Learn about Diarrhea.
    See more Diarrhea experts
  • Encopresis
    Dr. Markowitz is
    Experienced
    . Learn about Encopresis.
    See more Encopresis experts
  • Endoscopy
    Dr. Markowitz is
    Experienced
    . Learn about Endoscopy.
    See more Endoscopy experts
View All 18 Experienced Conditions
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