Dr. William J. Cohn, MD
- Medicare services, 2024
- 1,134
- Medicare patients, 2024
- 534
- Part D claims, 2024
- 376
- MIPS score, 2024
- 93
- Hospital affiliations
- 3
- Practice address
- 3400 Nesconset Hwy, East Setauket, NY 11733
- Practice phone
- Call (631) 751-8700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Long Island Endoscopy Center
East Setauket, New York
Find Dr. Cohn's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William J. Cohn is a gastroenterologist in East Setauket, New York
Dr. Cohn practices at Long Island Endoscopy Center in East Setauket, New York.
Dr. Cohn's NPI, 1861459208, was assigned on April 28, 2006. Dr. Cohn graduated from Virginia Commonwealth University School of Medicine in 1972. Dr. Cohn holds New York license 126917.
- NPI
- 1861459208NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254437247
- NPI enumeration date
- April 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (631) 751-8700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William J. Cohn practices at Long Island Endoscopy Center in East Setauket, New York
Dr. Cohn's primary practice is Long Island Endoscopy Center, at 3400 Nesconset Hwy, East Setauket, NY 11733 in Suffolk County. The practice phone is (631) 751-8700.
- Long Island Endoscopy Center3400 Nesconset Hwy, East Setauket, NY 11733 · Suffolk CountyPhone(631) 751-8700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William J. Cohn is affiliated with 7 sites of care and 3 medical groups
Dr. Cohn's primary practice is Long Island Endoscopy Center in East Setauket, New York. Dr. Cohn is also affiliated with Stony Brook University Hospital. The medical group on file is Long Island Digestive Disease Consultants. Dmand AI also links Dr. Cohn to 2 more hospitals, 3 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William J. Cohn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cohn practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Long Island Endoscopy Center | Available with a free account |
| +6 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William J. Cohn is one of 1,583 gastroenterologists in New York
Gastroenterology is Dr. Cohn's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Cohn is licensed in New York.
Specialties and state licenses
- Gastroenterology, New YorkPrimary
Gastroenterologists near Dr. Cohn
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William J. Cohn billed Medicare for 1,134 services in 2024
CMS data shows 1,134 Medicare services from Dr. Cohn across 12 procedure codes in 2024, for 534 Medicare patients. Medicare paid $109,236 for them.
Dr. Cohn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5172024: 4954%
- Surgery
- 2023: 2762024: 2822%
- Other services
- 2023: 942024: 198111%
- Lab and pathology
- 2023: 1352024: 15918%
Where Dr. Cohn's Medicare services took place, 2024
- In an office78469%
- In a facility35031%
Dr. Cohn compared with the New York median for gastroenterologists, 2024
- Dr. Cohn
- New York median
- Medicare services
- 1,134vs 4212.7 times
- Medicare patients
- 534vs 2362.3 times
- Part D claims
- 274vs 38228% below
Medians across 1,551 gastroenterologists in New York with Dmand AI profiles that report each measure.
Dr. Cohn's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Cohn?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Cohn and other gastroenterologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William J. Cohn treated 534 Medicare patients in 2024, average age 75
CMS counts 534 Medicare patients who saw Dr. Cohn in 2024. The largest group is 75 to 84, with 256 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Cohn's median patient age at 65, with 49% women.
Dr. Cohn's Medicare patients by age, 2024
Dr. Cohn's Medicare patients by sex, 2024
- Women27852%
- Men25648%
Chronic conditions among Dr. Cohn's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease42%
- Diabetes28%
- Anxiety26%
- Osteoporosis22%
- Cancer20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Cohn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William J. Cohn wrote 376 Medicare Part D claims in 2024
In 2024, Dr. Cohn wrote 376 Medicare Part D claims for 230 patients. 82% of them were for generic drugs. CMS names the drug for 274 of them, across 5 drugs with 11 or more claims each, at $10,411 in total drug cost. In 2023, CMS named 302 claims across 5 drugs.
Dr. Cohn's Part D claims by kind of drug, 2024
- Generic310 claims82%
- Brand-name66 claims18%
Dr. Cohn's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Cohn's Part D claims, 2024
- Antibiotics4%14 of 376 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3022024: 2749%
Drugs named by CMS: 5 in 2024, 5 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William J. Cohn scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Cohn for performance year 2024, reported through an alternative payment model (APM). Dr. Cohn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 96 procedures of colonoscopy by Dr. Cohn, more than 79% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Cohn's MIPS scores, performance year 2024
- 93of 100Final score
- 79.8of 100Quality
- 89of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Cohn ranks in Medicare procedure volume
- Colonoscopy
- 79th percentile96 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 69th percentile70 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. William J. Cohn received $2,937 in industry payments from 2016 to 2025
CMS Open Payments shows 116 general payments to Dr. Cohn from 25 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $438.
General payments to Dr. Cohn by program year, 2016 to 2025
Companies that paid Dr. Cohn the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William J. Cohn graduated from Virginia Commonwealth University School of Medicine
Dr. Cohn graduated from Virginia Commonwealth University School of Medicine in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William J. Cohn's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William J. Cohn
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William J. Cohn's NPI number?
Dr. William J. Cohn's NPI number is 1861459208. It was assigned on April 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William J. Cohn?
Dr. William J. Cohn is a gastroenterologist in East Setauket, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. William J. Cohn practice?
Dr. Cohn practices at 3400 Nesconset Hwy, East Setauket, NY 11733. Dr. Cohn's primary practice is Long Island Endoscopy Center in East Setauket, New York. Dmand AI also links Dr. Cohn to 2 hospitals, 3 group practices and clinics and 2 medical groups.
What is Dr. William J. Cohn's office phone number?
The practice phone on file for Dr. Cohn is (631) 751-8700.
What is Dr. William J. Cohn's medical license number?
Dr. Cohn holds New York license 126917.
Which hospitals is Dr. William J. Cohn affiliated with?
Dr. Cohn is affiliated with Stony Brook University Hospital. Dmand AI links Dr. Cohn to 2 more hospitals.
What medical group is Dr. William J. Cohn part of?
Dr. Cohn is linked to Long Island Digestive Disease Consultants. Dmand AI links Dr. Cohn to 2 more medical groups.
Does Dr. William J. Cohn accept Medicare?
Yes. CMS data shows Dr. Cohn billed Medicare for 1,134 services in 2024, and Dr. Cohn accepts Medicare assignment.
What is Dr. William J. Cohn's MIPS score?
Dr. Cohn's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. William J. Cohn see?
CMS counts 534 Medicare patients who saw Dr. Cohn in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. William J. Cohn bill to Medicare?
In 2024, Dr. Cohn's most billed Medicare services were office visit, established patient (99214), lab and pathology test (82272) and medicare service (G2211).
Where did Dr. William J. Cohn go to medical school?
Dr. Cohn graduated from Virginia Commonwealth University School of Medicine in 1972.
What drugs does Dr. William J. Cohn prescribe most?
In 2024 Medicare Part D data, Dr. Cohn's most prescribed drugs by claims were Sod Sulf-Potass Sulf-Mag Sulf, Pantoprazole Sodium and Omeprazole.
Has Dr. William J. Cohn received payments from drug or device companies?
CMS Open Payments shows $2,937 in general payments to Dr. Cohn from 25 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. William J. Cohn been practicing?
Dr. Cohn graduated from medical school in 1972, 54 years ago.
Selling to gastroenterology practices?
See gastroenterologists in New York by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card