Dr. John M. Costable JR., MD
Gastroenterology (Gastroenterology Physician)
- Medicare participating
At a glance
- Medical school
- State University of New York at Stony Brook, School of Medicine (1992)
- Years since graduation
- 34
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 431
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1992Medical school: State University of New York at Stony Brook, School of Medicine
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Gastroenterology Physician primary
NY license 198554
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Mount Sinai South Nassau Oceanside, NY
Medical groups
- North Shore Medical Group of the Mount Sinai School of Medicine (331 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 431
- Services billed
- 938
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 248 | 179 |
| Established patient office or other outpatient visit, 30-39 minutes | 170 | 142 |
| Biopsy of large bowel using a flexible endoscope | 115 | 115 |
| New patient office or other outpatient visit, 30-44 minutes | 109 | 109 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 100 | 95 |
| Diagnostic exam of large bowel using a flexible endoscope | 72 | 71 |
| New patient office or other outpatient visit, 45-59 minutes | 64 | 64 |
| Insertion of needle into vein for collection of blood sample | 38 | 34 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 37 | 37 |
| Imaging of digestive tract done from the inside of the digestive tract | 13 | 13 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Pantoprazole Sodium Other prescribers in Great Neck, NY | 410 |
| Omeprazole Other prescribers in Great Neck, NY | 391 |
| Famotidine Other prescribers in Great Neck, NY | 199 |
| Clenpiq (sod picosulf/mag ox/citric ac) | 95 |
| Linzess (linaclotide) Other prescribers in Great Neck, NY | 88 |
| Sod Sulf-Potass Sulf-Mag Sulf (sodium, potassium,mag sulfates) Other prescribers in Great Neck, NY | 62 |
| Metronidazole Other prescribers in Great Neck, NY | 39 |
| Esomeprazole Magnesium Other prescribers in Great Neck, NY | 37 |
| Dicyclomine Hcl Other prescribers in Great Neck, NY | 34 |
| Sucralfate Other prescribers in Great Neck, NY | 33 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 3 companies reported 3 payments worth $298 in total to this clinician.
| Madrigal Pharmaceuticals | $150 |
|---|---|
| Qol Medical, LLC | $122 |
| Olympus America Inc. | $26.20 |
| Food and Beverage | $298 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.