What patients are saying
Overall rating
4.90
Average wait time
4.63
Bedside manner
4.94
“Doctor was courteous and listened to my concerns and advised of testing options to ensure an accurate diagnoses. Very happy with approach and personality. ”
Initials hiddenLess than 3 months ago
“The staff was efficient, organized, and very professional! I'm always anxious going to the doctor, but Dr Olstein was was wonderful, communicated clearly, and put me at ease! ”
Jordan B.August 14, 2025
About Dr. Joshua Olstein
Dr. Olstein is a board-certified gastroenterologist with specialized expertise in advanced endoscopic procedures and a strong commitment to delivering compassionate, comprehensive digestive care. He earned his undergraduate degree from the University of Michigan and completed his medical degree at the University of Pittsburgh. Dr. Olstein went on to complete his internship, residency, and fellowship at New York University, where he gained extensive training in both general and advanced gastroenterology.
His clinical interests include endoscopic ultrasound (EUS) and therapeutic endoscopy, particularly ERCP (endoscopic retrograde cholangiopancreatography), which are essential tools in diagnosing and treating complex conditions affecting the bile ducts, pancreas, and gastrointestinal tract.
Dr. Olstein is currently an attending physician at both Good Samaritan Regional Medical Center and Montefiore Nyack Hospital. He is known for combining technical precision with a caring bedside manner, ensuring that each patient receives personalized, evidence-based treatment.
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In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Emblem Health
Medicare
UnitedHealthcare
UnitedHealthcare Oxford
Areas of expertise
This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Acute gastrointestinal bleeding
Acute hemorrhoids
Irritable Bowel Syndrome (IBS)
Acid reflux
Upper GI endoscopy
Colonoscopy
Acute gastrointestinal bleeding
Acute hemorrhoids
Irritable Bowel Syndrome (IBS)
Acid reflux
Office location
Gastrointestinal Associates of Rockland
500 New Hempstead Road, Suite A, New City, NY 10956
Education and background
Practice names
Board certifications
- American Board of Internal Medicine
- Gastroenterology (American Board of Internal Medicine)
Education and training
- Medical School - University of Pittsburgh, Doctor of Medicine
- New York University, Internship in Internal Medicine
- New York University, Residency in Internal Medicine
- New York University, Fellowship in Gastroenterology
Languages spoken
- English
Provider's gender
Male
NPI number
1346446580
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.90
Wait time
4.63
Bedside manner
4.94
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
49 reviews
Most relevant
Highly recommend this Doctor and location. Knowledgeable, attentive, excellent follow up care.
Less than 3 months agoInitials hidden
Dr Olstein is very kind ..He listened carefully to everything I said.
I totally trust him.
December 8, 2025Initials hidden
Yes,! Will recommend this doctor to my friends and I will come back to him!
December 30, 2025Initials hidden
Great experience over all would highly recommend
March 20, 2026Jessica B.Verified patient
Doctor was courteous and listened to my concerns and advised of testing options to ensure an accurate diagnoses. Very happy with approach and personality.
Less than 3 months agoInitials hidden
Excellent.
November 19, 2025Apparao M.Verified patient
Long wait time and loud staff
August 18, 2025Marianna F.Verified patient
The staff was efficient, organized, and very professional! I'm always anxious going to the doctor, but Dr Olstein was was wonderful, communicated clearly, and put me at ease!
August 14, 2025Jordan B.Verified patient
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December 4, 2025Laura H.Verified patient
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August 20, 2025Esther H.Verified patient
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How soon can I make an appointment with Dr. Joshua Olstein?
Generally, Dr. Joshua Olstein has appointments available on Zocdoc within 1 week. You can see Dr. Olstein's earliest availability on Zocdoc and make an appointment online.
Is Dr. Joshua Olstein accepting new patients?
Dr. Joshua Olstein generally accepts new patients on Zocdoc. You can see Dr. Olstein's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Joshua Olstein accept my insurance?
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Can I make an appointment with Dr. Joshua Olstein online?
Yes, you can make an appointment online with Dr. Olstein using Zocdoc. It’s simple, secure, and free.
What practice does Dr. Joshua Olstein work with?
Where is Dr. Joshua Olstein's office located?
Dr. Joshua Olstein's office is located at 500 New Hempstead Road, New City, NY 10956.
Which board certifications does Dr. Joshua Olstein have?
Dr. Joshua Olstein is certified by American Board of Internal Medicine and Gastroenterology (American Board of Internal Medicine).
What are common reasons for patients to see Dr. Joshua Olstein?
Dr. Joshua Olstein frequently sees patients for Colonoscopy, Gastroenterology Consultation, Hemorrhoids, Illness, and Weight Loss Consultation. You can see other visit reasons for Dr. Joshua Olstein on their profile.
What languages does Dr. Joshua Olstein speak?
Dr. Joshua Olstein speaks English.
How do patients rate Dr. Joshua Olstein in reviews?
49 patients have reviewed Dr. Joshua Olstein. The overall rating for this doctor is 4.9/5. They have a 4.94/5 rating for bedside manner and a 4.62/5 rating for wait time. You can read individual reviews and ratings on their profile.