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  • Gastroenterology, Internal Medicine
  • Accepting new patients
  • 23 years of experience
  • Robert M Lazar Md Pc 1092 Jericho Tpke Ste 2S, Commack, NY 11725
  • (631) 543-8660

Brief Intro

Dr. Feldstein graduated from the St Georges University,St Georges University School of Medicine in 2002. He works in Commack, NY and 3 other locations and specializes in Internal Medicine and Gastroenterology. Dr. Feldstein is affiliated with Saint Catherine Of Siena Medical Center.

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Education Background

RESIDENCY

St Lukes-Roosevelt Hospital Center

MEDICAL SCHOOL

St Georges University - 2008

St Georges University School Of Medicine - 2002

Languages Spoken

  • English
  • Spanish

Location & Hours

  • Robert M Lazar Md Pc
  • 1092 Jericho Tpke Ste 2S, Commack, NY 11725
  • Mon:9:00 am - 3:00 pm
    Tue:9:00 am - 3:00 pm
    Wed:9:00 am - 3:00 pm
    Thu:9:00 am - 3:00 pm
    Fri:9:00 am - 1:00 pm
    Sat:Closed
    Sun:Closed

Specialties Treated

  • Internal Medicine
  • Gastroenterology

Conditions Addressed

  • Anal Fissure
  • Inflammatory Bowel Disease (IBD)
  • Hemorrhoids
  • Cholelethiasis or Cholecystitis
  • Pancreatic Cancer
  • Peptic Ulcer Disease
  • Constipation
  • Rectal, Abdomen, Small Intestines, or Colon Cancer
  • Gastritis and Duodenitis
  • Ischemic Bowel Disease
  • Gastroesophageal Reflux Disease (GERD)
  • Irritable Bowel Syndrome (IBS)
  • Benign Polyps of the Colon
  • Diverticulitis
  • Intestinal Obstruction
  • Gastrointestinal Hemorrhage
  • Diverticulosis
  • Esophagitis
  • Cirrhosis
  • Acute Pancreatitis
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Procedures Performed

  • Sigmoidoscopy

Insurance Accepted

* Insurance information may change frequently. Please verify directly with the provider (doctor/clinic).

  • CDPHP
  • Aetna
  • Northwell Direct
  • UnitedHealthcare
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Arizona
  • Affinity Health Plan
  • UnitedHealthcare Oxford
  • HealthFirst (NY)
  • Molina Healthcare
  • MVP Health Care
  • Cigna
  • Horizon Blue Cross Blue Shield of New Jersey
  • GEHA
  • Tricare
  • Piedmont Community Health Plan
  • Medicare
  • 1199SEIU
  • Wellcare
  • CHAMPVA
  • Fidelis Care (NY)
  • Premera Blue Cross
  • Oscar Health Insurance
  • EmblemHealth
  • Humana
  • UnitedHealthcare Community Plan
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  • Cancer 43
  • Cardiology, Heart & Vascular Surgery 31
  • Orthopedics 75
  • Neurology & Neurosurgery 60
  • Gastroenterology & GI Surgery 75
  • Pulmonology & Lung Surgery 91
  • Diabetes & Endocrinology 44
  • Children's Hospital 22
  • Urology 87
  • Psychiatry 103
  • Geriatrics 82
  • Rehabilitation 38
  • Obsterics & Gynecology 17
  • Ophthalmology 4
  • Ear, Nose & Throat 11
  • Rheumatology 2
  • Long Term Care 3
  • Maternity Care (Uncomplicated Pregnancy) 60