Dr. Jay Samuel Fenster, MD
- Medicare services, 2024
- 2,054
- Medicare patients, 2024
- 646
- Part D claims, 2024
- 936
- MIPS score, 2024
- 27
- Hospital affiliations
- 1
- Practice address
- 657 Central Ave, Cedarhurst, NY 11516
- Practice phone
- Call (516) 374-0670
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
South Shore Gastroenterology PC
Cedarhurst, New York
Find Dr. Fenster's professional email, personal email and mobile number
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Dr. Jay Samuel Fenster is a gastroenterologist in Cedarhurst, New York
Dr. Fenster practices at South Shore Gastroenterology PC in Cedarhurst, New York.
Dr. Fenster's NPI, 1467434126, was assigned on November 17, 2005. Dr. Fenster graduated from State University of New York Downstate Medical Center in 1986. Dr. Fenster holds New York license 174304.
- NPI
- 1467434126NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072799717
- NPI enumeration date
- November 17, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (516) 374-0670
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jay Samuel Fenster practices at South Shore Gastroenterology PC in Cedarhurst, New York
Dr. Fenster's primary practice is South Shore Gastroenterology PC, at 657 Central Ave, Cedarhurst, NY 11516 in Nassau County. The practice phone is (516) 374-0670.
- South Shore Gastroenterology PC657 Central Ave, Cedarhurst, NY 11516 · Nassau CountyPhone(516) 374-0670
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jay Samuel Fenster is affiliated with 4 sites of care and 3 medical groups
Dr. Fenster's primary practice is South Shore Gastroenterology PC in Cedarhurst, New York. Dr. Fenster is also affiliated with St. John's Episcopal Hospital. The medical group on file is Five Towns Gastroenterology. Dmand AI also links Dr. Fenster to 2 more 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. Jay Samuel Fenster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fenster practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| South Shore Gastroenterology PC | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jay Samuel Fenster is one of 1,583 gastroenterologists in New York
Gastroenterology is Dr. Fenster's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Fenster is licensed in New York.
Specialties and state licenses
- Gastroenterology, New YorkPrimary
Gastroenterologists near Dr. Fenster
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. Jay Samuel Fenster billed Medicare for 2,054 services in 2024
CMS data shows 2,054 Medicare services from Dr. Fenster across 13 procedure codes in 2024, for 646 Medicare patients. Medicare paid $315,967 for them. Every service was in an office.
Dr. Fenster's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0112024: 1,27326%
- Surgery
- 2023: 4052024: 45813%
- Other services
- 2023: 402024: 224460%
- Lab and pathology
- 2023: 02024: 99
- Tests and treatments
- 2023: 152024: 0100%
Dr. Fenster compared with the New York median for gastroenterologists, 2024
- Dr. Fenster
- New York median
- Medicare services
- 2,054vs 4214.9 times
- Medicare patients
- 646vs 2362.7 times
- Part D claims
- 809vs 3822.1 times
Medians across 1,551 gastroenterologists in New York with Dmand AI profiles that report each measure.
Dr. Fenster'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fenster and other gastroenterologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jay Samuel Fenster treated 646 Medicare patients in 2024, average age 74
CMS counts 646 Medicare patients who saw Dr. Fenster in 2024. The largest group is 65 to 74, with 323 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 5% are also on Medicaid. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Fenster's median patient age at 57, with 52% women.
Dr. Fenster's Medicare patients by age, 2024
Dr. Fenster's Medicare patients by sex, 2024
- Women33151%
- Men31549%
Chronic conditions among Dr. Fenster's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis46%
- Diabetes40%
- Ischemic heart disease32%
- Osteoporosis21%
- Cancer20%
- Chronic kidney disease19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Fenster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women52%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jay Samuel Fenster wrote 936 Medicare Part D claims in 2024
In 2024, Dr. Fenster wrote 936 Medicare Part D claims for 352 patients. 81% of them were for generic drugs. CMS names the drug for 809 of them, across 13 drugs with 11 or more claims each, at $113,222 in total drug cost. In 2023, CMS named 909 claims across 19 drugs.
Dr. Fenster's Part D claims by kind of drug, 2024
- Generic762 claims81%
- Brand-name174 claims19%
Dr. Fenster'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. Fenster's Part D claims, 2024
- Antibiotics3%24 of 936 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: 9092024: 80911%
Drugs named by CMS: 13 in 2024, 19 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. Jay Samuel Fenster scored 27 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 27 out of 100 for Dr. Fenster for performance year 2024, reported individually. Dr. Fenster accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Fenster as offering telehealth. CMS counts 426 procedures of colonoscopy by Dr. Fenster, more than 99% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Fenster's MIPS scores, performance year 2024
- 27of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 88of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Fenster ranks in Medicare procedure volume
- Colonoscopy
- 99th percentile426 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 92nd percentile228 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)
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Dr. Jay Samuel Fenster received $14,578 in industry payments from 2016 to 2025
CMS Open Payments shows 522 general payments to Dr. Fenster from 40 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 86% of the total. Olympus America Inc. paid the most, $1,952.
General payments to Dr. Fenster by program year, 2016 to 2025
General payments to Dr. Fenster by kind, 2016 to 2025
- Food and beverage$12,58886%
- Debt forgiveness$1,92713%
- Consulting fees$490%
- Gifts$130%
Companies that paid Dr. Fenster 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. Jay Samuel Fenster graduated from State University of New York Downstate Medical Center
Dr. Fenster graduated from State University of New York Downstate Medical Center in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jay Samuel Fenster'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. Jay Samuel Fenster
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. Jay Samuel Fenster's NPI number?
Dr. Jay Samuel Fenster's NPI number is 1467434126. It was assigned on November 17, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jay Samuel Fenster?
Dr. Jay Samuel Fenster is a gastroenterologist in Cedarhurst, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Jay Samuel Fenster practice?
Dr. Fenster practices at 657 Central Ave, Cedarhurst, NY 11516. Dr. Fenster's primary practice is South Shore Gastroenterology PC in Cedarhurst, New York. Dmand AI also links Dr. Fenster to 2 group practices and clinics and 2 medical groups.
What is Dr. Jay Samuel Fenster's office phone number?
The practice phone on file for Dr. Fenster is (516) 374-0670.
What is Dr. Jay Samuel Fenster's medical license number?
Dr. Fenster holds New York license 174304.
Which hospitals is Dr. Jay Samuel Fenster affiliated with?
Dr. Fenster is affiliated with St. John's Episcopal Hospital.
What medical group is Dr. Jay Samuel Fenster part of?
Dr. Fenster is linked to Five Towns Gastroenterology. Dmand AI links Dr. Fenster to 2 more medical groups.
Does Dr. Jay Samuel Fenster accept Medicare?
Yes. CMS data shows Dr. Fenster billed Medicare for 2,054 services in 2024, and Dr. Fenster accepts Medicare assignment.
Does Dr. Jay Samuel Fenster offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Fenster as offering telehealth services.
What is Dr. Jay Samuel Fenster's MIPS score?
Dr. Fenster's MIPS final score for performance year 2024 is 27 out of 100, reported individually.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Jay Samuel Fenster see?
CMS counts 646 Medicare patients who saw Dr. Fenster in 2024, with an average age of 74.
What services does Dr. Jay Samuel Fenster bill to Medicare?
In 2024, Dr. Fenster's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and surgery: digestive system (45385).
Where did Dr. Jay Samuel Fenster go to medical school?
Dr. Fenster graduated from State University of New York Downstate Medical Center in 1986.
What drugs does Dr. Jay Samuel Fenster prescribe most?
In 2024 Medicare Part D data, Dr. Fenster's most prescribed drugs by claims were Omeprazole, Sod Sulf-Potass Sulf-Mag Sulf and Esomeprazole Magnesium.
Has Dr. Jay Samuel Fenster received payments from drug or device companies?
CMS Open Payments shows $14,578 in general payments to Dr. Fenster from 40 companies from 2016 to 2025. The largest total came from Olympus America Inc.
How long has Dr. Jay Samuel Fenster been practicing?
Dr. Fenster graduated from medical school in 1986, 40 years ago.
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