Browse specialties
Chiropractors
Dentists
Dermatologists
Ear, Nose & Throat Doctors
Endocrinologists
Eye Doctors
OBGYNs
Ophthalmologists
Optometrists
Orthopedic Surgeons
Podiatrists
Primary Care Doctors
Psychiatrists
Psychologists
Therapist-Counselors
See all specialties A-Z
Zocdoc
HomeAbout usPressCareersHelp
Contact
service@zocdoc.com855-962-3621
Discover
The Paper Gown: Stories for and about patientsThe Script: Insights for doctorsCommunity StandardsData and privacyVerified reviewsTech BlogNew
Are you a top doctor or health service?
Try Zo, your AI Phone AssistantList your practice on ZocdocLearn about Zocdoc for Health SystemsBecome an EHR partner
Insurance Carriers
Top Specialties
Welcome to Zocdoc!
Book local doctors who take your insurance
Sign up
For providers
Grow your practice
For patients
Zocdoc
HomeAbout usPressCareersHelp
Contact
service@zocdoc.com855-962-3621
Discover
The Paper Gown: Stories for and about patientsThe Script: Insights for doctorsCommunity StandardsData and privacyVerified reviewsTech BlogNew
Are you a top doctor or health service?
Try Zo, your AI Phone AssistantList your practice on ZocdocLearn about Zocdoc for Health SystemsBecome an EHR partner
Insurance Carriers
Top Specialties
HelpList your practice on Zocdoc
Sign up
Dr. John Costable, MD

Dr. John Costable, MD

Gastroenterologist
1436 Broadway, Hewlett, NY
If you need to cancel your appointment within 24 hours of the scheduled time, please call the office. Dr. John Costable is a gastroenterologist serving the people of Manhasset, New York. He currently practices with Mount Sinai Doctors, offering treatments for a wide range of medical conditions. Dr. Costable earned his Doctor of Medicine degree from the State University of New York, Stony Brook, after completing his bachelor's degree at the University of Rochester. He is board-certified by the American Board of Internal Medicine, specializing in gastroenterology. With extensive medical experience, Dr. Costable treats conditions such as diarrhea, stomach ulcers, nausea, and vomiting. He also provides colon cancer screenings and gastroenterology consultations as part of his comprehensive services.
Highly recommended
98% of patients gave this doctor 5 stars
Excellent wait time
100% of patients waited less than 30 minutes

Book an appointment for free

The office partners with Zocdoc to schedule appointments

Scheduling details

  1. See if they are in network

Available appointments

Today, Apr 2 – Wed, Apr 15
At the moment, there's no availability on Zocdoc for the selected date range and appointment type at this location.
View more availability

What patients are saying

Overall rating

4.92

Average wait time

5.00

Bedside manner

5.00

About Dr. John Costable

If you need to cancel your appointment within 24 hours of the scheduled time, please call the office. Dr. John Costable is a gastroenterologist serving the people of Manhasset, New York. He currently practices with Mount Sinai Doctors, offering treatments for a wide range of medical conditions. Dr. Costable earned his Doctor of Medicine degree from the State University of New York, Stony Brook, after completing his bachelor's degree at the University of Rochester. He is board-certified by the American Board of Internal Medicine, specializing in gastroenterology. With extensive medical experience, Dr. Costable treats conditions such as diarrhea, stomach ulcers, nausea, and vomiting. He also provides colon cancer screenings and gastroenterology consultations as part of his comprehensive services.

Is this doctor in your insurance network?

Enter your insurance carrier and plan

  1. choose insurance

In-network insurances

Aetna
Cigna
Emblem Health
Medicare
UnitedHealthcare
UnitedHealthcare Oxford
200+ more in-network plans

Areas of expertise

This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Colonoscopy
Diverticulosis (outpouchings) of intestine
Upper GI endoscopy
Irritable Bowel Syndrome (IBS)
Chronic Inflammatory Bowel Disease (IBD)
Chronic indigestion without clear cause
Colonoscopy
Diverticulosis (outpouchings) of intestine
Upper GI endoscopy
Irritable Bowel Syndrome (IBS)

Office locations

Mount Sinai Doctors (1 of 2)
1436 Broadway, Hewlett, NY 11557
Get directions
Manhasset Medical Associates Epic (2 of 2)
1155 Northern Blvd, Manhasset, NY 11030
Get directions
1 of 2

Education and background

Practice names

Board certifications

  • Gastroenterology (American Board of Internal Medicine)

Education and training

  • Medical School - State University of New York, Stony Brook, Doctor of Medicine
  • University of Rochester (Bachelor's)

Languages spoken

  • English

Provider's gender

Male

NPI number

1043251184

Patient reviews

All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.92
Wait time
5.00
Bedside manner
5.00
Trust Banner Shield
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
52 reviews
Most relevant
Listened to my issues and provided a common sense approach to my problem
Verified patient
Verified patient
Verified patient
Frequently asked questions

How soon can I make an appointment with Dr. John Costable?

Generally, Dr. John Costable has appointments available on Zocdoc within 1 week. You can see Dr. Costable's earliest availability on Zocdoc and make an appointment online.

Is Dr. John Costable accepting new patients?

Dr. John Costable generally accepts new patients on Zocdoc. You can see Dr. Costable's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. John Costable accept my insurance?

Choose your insurance plan to verify if Dr. Costable is in-network.

Can I make an appointment with Dr. John Costable online?

Yes, you can make an appointment online with Dr. Costable using Zocdoc. It’s simple, secure, and free.

What practice does Dr. John Costable work with?

Where is Dr. John Costable's office located?

Dr. John Costable has 2 office locations, including in Manhasset and Hewlett, view full addresses on Dr. Costable's profile.

Which board certifications does Dr. John Costable have?

Dr. John Costable is certified by Gastroenterology (American Board of Internal Medicine).

What are common reasons for patients to see Dr. John Costable?

Dr. John Costable frequently sees patients for Abdominal Pain, Gastroenterology Consultation, Hemorrhoids, Illness, and Weight Loss Consultation. You can see other visit reasons for Dr. John Costable on their profile.

What languages does Dr. John Costable speak?

Dr. John Costable speaks English.

How do patients rate Dr. John Costable in reviews?

52 patients have reviewed Dr. John Costable. The overall rating for this doctor is 4.92/5. They have a 5/5 rating for bedside manner and a 5/5 rating for wait time. You can read individual reviews and ratings on their profile.

Find doctors

Zocdoc›Manhasset, NY Gastroenterologists›Dr. John Costable, MD