William J. Cohn, MD
Gastroenterology Physician · East Setauket, NY
William J. Cohn, MD is a gastroenterology physician with a practice address in East Setauket, New York, and NPI 1861459208, issued on Apr 28, 2006. Check the license (New York 126917, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William J. Cohn
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 126917 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3400 Nesconset Hwy, East Setauket, NY 11733
- Phone
- (631) 751-8700
- Enumerated
- Apr 28, 2006
- Record last updated
- Sep 20, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (631) 751-5971
- Medicaid ID
- 00397402 NY
- Medicare enrollment
- Enrolled (PECOS I20101105000893); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 1972
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,797 in New York → Look up another NPI →
Also registered at 3400 Nesconset Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Baranowski, MDGastroenterology Physician1205892205
- Vincent Basilice, M.D.,P.C.Ophthalmology Physician1396868527
- Gary Bernstein, MDGastroenterology Physician1407813579
- Margaret Cariola, NPAdult Health Nurse Practitioner1003944943
- Eugene Coman, MDGastroenterology Physician1497713887
- Michael Conners, MDOphthalmology Physician1497772958
Verify William J. Cohn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 126917Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average gastroenterology physician in 2024
376 Medicare Part D claims for 230 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf104 claims
- Pantoprazole Sodium89 claims
- Omeprazole39 claims
- Famotidine21 claims
- Suflave21 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $376.99
14 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Medical Services OF Setauket PCEast Setauket, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William J. Cohn among 1,797 gastroenterology physician records in New York
William J. Cohn, MD is one of 1,797 gastroenterology physician records with a practice address in New York. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 44% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1972 · median 1999 among the 1,378 with a school on file
- Record last updated2012 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 gastroenterology physician records list a practice address in East Setauket
They are 20 of the 972 NPPES records with a practice address in East Setauket, and 1,797 gastroenterology physician records in New York.
All 1,797 in New York → Every provider in East Setauket → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Robert Baranowski, MDEast Setauket, NY 117331205892205
- Gary Bernstein, MDEast Setauket, NY 117331407813579
- Douglas Brand, M.D.East Setauket, NY 117331851326706
- Jonathan Buscaglia, MDEast Setauket, NY 117331124078589
- Eugene Coman, MDEast Setauket, NY 117331497713887
- Peter Ells, M.D.East Setauket, NY 117331336174143
- Howard Keschner, MDEast Setauket, NY 117331871551879
- Asim Khokhar, M.D.East Setauket, NY 117331376655043
Common questions
What is William J. Cohn, MD's NPI number?
William J. Cohn, MD's National Provider Identifier (NPI) is 1861459208, issued on Apr 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Cohn, MD located?
The NPPES record lists a practice address at 3400 Nesconset Hwy, East Setauket, NY, 11733. Phone: (631) 751-8700. Providers update this record themselves, so call before visiting.
How can I verify William J. Cohn, MD's license?
NPPES lists New York license number 126917, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William J. Cohn, MD prescribe under Medicare Part D?
In 2024, William J. Cohn, MD had 376 Medicare Part D claims for 230 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is William J. Cohn, MD's MIPS final score?
The 2023 MIPS final score is 91.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.