The 20 Best Colonoscopy Doctors near Uniondale, NY

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 02/22/2026

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MediFind found 330 doctor with experience in Colonoscopy near Uniondale, NY. Of these, 283 are Experienced and 40 are Advanced.

Location
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330 providers found
    Richard B. Rubin
    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Northwell Health Physician Partners Medicine Specialties At Bellmore

    1872 Bellmore Avenue, 
    Bellmore, NY 
     (3.8 miles away)
    Languages Spoken:
    English, Spanish
    Offers Telehealth

    Richard Rubin is a Gastroenterologist in Bellmore, New York. Dr. Rubin is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Hemorrhagic Proctocolitis, Hiatal Hernia, Congenital Diaphragmatic Hernia, Colonoscopy, and Endoscopy.

    Eugene M. Sullivan
    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Northwell Health Gastroenterology Associates At Uniondale

    106 Charles Lindbergh Boulevard, Suite B, 
    Uniondale, NY 
     (1.9 miles away)
    Languages Spoken:
    English

    Eugene Sullivan is a Gastroenterologist in Uniondale, New York. Dr. Sullivan is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Tenesmus, Gastrointestinal Bleeding, Crohn's Disease, Endoscopy, and Colonoscopy.

    Andrew B. Rosenberg
    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Northwell Health Gastroenterology Associates At Uniondale

    106 Charles Lindbergh Boulevard, Suite B, 
    Uniondale, NY 
     (1.9 miles away)
    Languages Spoken:
    English

    Andrew Rosenberg is a Gastroenterologist in Uniondale, New York. Dr. Rosenberg is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Heartburn, Barrett Esophagus, Gastrectomy, and Colonoscopy.

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    Benjamin Stern
    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Northwell Health Gastroenterology Associates At Uniondale

    106 Charles Lindbergh Boulevard, Suite B, 
    Uniondale, NY 
     (1.9 miles away)
    Languages Spoken:
    English

    Benjamin Stern is a Gastroenterologist in Uniondale, New York. Dr. Stern is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Adenomatous Polyposis, Childhood Pancreatitis, Nonalcoholic Steatohepatitis (NASH), Gastrectomy, and Colonoscopy.

    Christopher J. Dimaio
    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    106 Charles Lindbergh Boulevard, Suite A, 
    Uniondale, NY 
     (1.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Christopher J. DiMaio, MD is a member of Northwell Health Physician Partners Gastroenterology and is the Regional Director of Endoscopy.He is an interventional endoscopist and a nationally recognized expert in the care of patients with complex pancreatic and biliary diseases, pre-cancerous and cancerous lesions of the gastrointestinal tract, Barrett's esophagus, complex colon polyps, benign and malignant obstruction of the gastrointestinal tract, and post-operative complications such as fistulas, leaks, and strictures. A significant portion of his practice is dedicated to the management of benign and malignant pancreatic disease, including pancreatitis, pancreatic cancers and cysts, and pancreatic fluid collections/pseudocysts/necrosis.Dr. DiMaio is a frequent speaker at national and regional GI meetings, has more than 100 scientific publications in high-impact journals, and has served on numerous committees for the American Society for Gastrointestinal Endoscopy (ASGE). He is a Past President of the New York Society for Gastroenterology and Endoscopy (NYSGE). Prior to joining Northwell, Dr. DiMaio served in a number of leadership positions with Memorial Sloan-Kettering Cancer Center, Mount Sinai Hospital, and Catholic Health. Dr. Dimaio is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Pancreatic Cancer, Barrett Esophagus, Bile Duct Stricture, Pancreatectomy, and Endoscopy.

    Umair M. Nasir
    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine
    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine

    Northwell Health JV Ambulatory Surgery Center Long Island Center For Digestive Health

    106 Charles Lindbergh Blvd, 
    Garden City, NY 
     (1.9 miles away)
    Languages Spoken:
    English

    Umair Nasir is an Internal Medicine specialist and a Gastroenterologist in Garden City, New York. Dr. Nasir is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Viral Gastroenteritis, Autoimmune Hepatitis, Esophagitis, Endoscopy, and Stent Placement.

    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine
    1703 Merrick Avenue, 
    Merrick, NY 
     (2.5 miles away)
    Languages Spoken:
    English

    Neelam Gupta is an Internal Medicine specialist and a Gastroenterologist in Merrick, New York. Dr. Gupta is rated as an Advanced provider by MediFind in Colonoscopy. Her top areas of expertise are Esophagitis, Diverticular Disease, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Colonoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    3 North Main Street, 
    Freeport, NY 
     (3.6 miles away)
    Languages Spoken:
    English

    Iheanyichukwu Aja is a Gastroenterologist in Freeport, New York. Dr. Aja is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Bile Duct Obstruction, Gastrointestinal Bleeding, Acute Pancreatitis, Gastrectomy, and Colonoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    3019 Merrick Road, 
    Wantagh, NY 
     (4.8 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English, Hebrew
    Offers Telehealth

    Zachary Marwil is a Gastroenterologist in Wantagh, New York. Dr. Marwil has been practicing medicine for over 17 years and is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Diarrhea, Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Colonoscopy, and Gastrectomy.

    Jeffrey S. Novak
    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    3019 Merrick Road, 
    Wantagh, NY 
     (4.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Jeffrey Novak is a Gastroenterologist in Wantagh, New York. Dr. Novak is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Adenomatous Polyposis, Barrett Esophagus, Turcot Syndrome, Colonoscopy, and Gastrectomy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Irum Chaudhry Medical P.C

    380 Merrick Ave, 
    East Meadow, NY 
     (1.4 miles away)
    Languages Spoken:
    English

    Irum Chaudhry is an Internal Medicine provider in East Meadow, New York. Dr. Chaudhry is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Multiple Myeloma, Pneumonia, Sepsis, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Cardiology
    Experienced in Colonoscopy
    Cardiology

    Mayur J Kothari MD. PC

    30 Merrick Ave Ste 105, 
    East Meadow,, NY 
     (2.2 miles away)
    Languages Spoken:
    English

    Leon Mullen is a Cardiologist in East Meadow,, New York. Dr. Mullen is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Neurocardiogenic Syncope, Atherosclerosis, Coronary Heart Disease, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    General Surgery
    Experienced in Colonoscopy
    General Surgery

    Office

    1300 Franklin Ave Ste ML6, 
    Garden City, NY 
     (2.9 miles away)
    Languages Spoken:
    English

    Patrick Hartendorp is a General Surgeon in Garden City, New York. Dr. Hartendorp is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Rectal Prolapse, Hemorrhoids, Toxic Megacolon, Hemorrhoidectomy, and Colonoscopy.

    Experienced in Colonoscopy
    Colorectal Surgery
    Experienced in Colonoscopy
    Colorectal Surgery

    Colon & Rectal Surgical Practice Of Nassau PLLC

    1100 Franklin Ave Ste 203, 
    Garden City, NY 
     (3.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Cesar Sanz is a Colorectal Surgeon in Garden City, New York. Dr. Sanz is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Proctitis, Hemorrhoids, Gastric Dysmotility, Hernia Surgery, and Colonoscopy.

    Experienced in Colonoscopy
    Colorectal Surgery
    Experienced in Colonoscopy
    Colorectal Surgery

    Colon & Rectal Surgical Practice Of Nassau PLLC

    1100 Franklin Ave Ste 203, 
    Garden City, NY 
     (3.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Dean Pappas is a Colorectal Surgeon in Garden City, New York. Dr. Pappas is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Proctitis, Hemorrhoids, Levator Syndrome, Bladder Reconstruction, and Hernia Surgery.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Northwell Health Physician Partners Gastroenterology At Mineola

    300 Old Country Road, Suite 31, 
    Mineola, NY 
     (3.7 miles away)
    Languages Spoken:
    English

    Samrath Singh is a Gastroenterologist in Mineola, New York. Dr. Singh is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Angiodysplasia of the Colon, Gastric Dysmotility, Anemia, Colonoscopy, and Gastrectomy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy

    Winthrop University Hospital

    259 1st St, 
    Mineola, NY 
     (3.8 miles away)
    Languages Spoken:
    English

    Douglas Katz is a Radiologist in Mineola, New York. Dr. Katz is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Appendicitis, Fecal Impaction, Intussusception in Children, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy

    Winthrop University Hospital

    259 1st St, 
    Mineola, NY 
     (3.8 miles away)
    Languages Spoken:
    English

    Nicholas Georgiou is a Radiologist in Mineola, New York. Dr. Georgiou is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Ascites, Lung Cancer, Small Cell Lung Cancer (SCLC), Bone Marrow Aspiration, and Endoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Winthrop Faculty Medical Affiliates University Faculty Practice Corpor

    222 Station Plz N Ste 428, 
    Mineola, NY 
     (4.0 miles away)
    Languages Spoken:
    English

    David Friedel is a Gastroenterologist in Mineola, New York. Dr. Friedel is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Achalasia, Familial Pancreatic Cancer, Angiodysplasia of the Colon, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Office

    222 Station Plz N Ste 429, 
    Mineola, NY 
     (4.0 miles away)
    Languages Spoken:
    English

    James Grendell is a Gastroenterologist in Mineola, New York. Dr. Grendell is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Achalasia, Gastroesophageal Reflux Disease (GERD), Acute Pancreatitis, Endoscopy, and Gastrostomy.

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    Last Updated: 02/22/2026

    What is the definition of Colonoscopy?

    A colonoscopy is an exam that views the inside of the colon (large intestine) and rectum, using a tool called a colonoscope.

    The colonoscope has a small camera attached to a flexible tube that can reach the entire length of the colon.

    When should I see a Colonoscopy doctor near Uniondale, NY?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a Colonoscopy doctor near Uniondale, NY?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Colonoscopy doctors near Uniondale, NY?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Colonoscopy doctors near Uniondale, NY?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a Colonoscopy doctor near Uniondale, NY?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Colonoscopy doctor search results page. 

    Why is it important to get a second opinion from a different Colonoscopy doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a Colonoscopy doctor near Uniondale, NY?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Colonoscopy doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Colonoscopy doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Colonoscopy doctors near Uniondale, NY?

    Look for the filter feature on the left side of the Colonoscopy doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a Colonoscopy doctor that offers video calls?

    Look for the filter feature on the left-side of the Colonoscopy doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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