Dr. Jeffrey J. Warren, MD
- Medicare services, 2024
- 139
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 33
- MIPS score, 2024
- 79
- Hospital affiliations
- 1
- Practice address
- 1111 Montauk Hwy, West Islip, NY 11795
- Practice phone
- Call (631) 669-1171
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Island Gastroenterology Consultants
West Islip, New York
Find Dr. Warren's professional email, personal email and mobile number
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Dr. Jeffrey J. Warren is an internist in West Islip, New York
Dr. Warren practices at Island Gastroenterology Consultants in West Islip, New York.
Dr. Warren's NPI, 1316140627, was assigned on June 6, 2007. Dr. Warren holds Illinois license 125050254.
- NPI
- 1316140627NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002987666
- NPI enumeration date
- June 6, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (631) 669-1171
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jeffrey J. Warren practices at Island Gastroenterology Consultants in West Islip, New York
Dr. Warren's primary practice is Island Gastroenterology Consultants, at 1111 Montauk Hwy, West Islip, NY 11795 in Suffolk County. The practice phone is (631) 669-1171.
- Island Gastroenterology Consultants1111 Montauk Hwy, West Islip, NY 11795 · Suffolk CountyPhone(631) 669-1171
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jeffrey J. Warren is affiliated with 3 sites of care and 2 medical groups
Dr. Warren's primary practice is Island Gastroenterology Consultants in West Islip, New York. Dr. Warren is also affiliated with Vibra Hospital of Denver. The medical group on file is Critical Care and Pulmonary Consultants (CCPC). Dmand AI also links Dr. Warren to 1 more group practice or clinic and 1 medical group, 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. Jeffrey J. Warren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Warren practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Island Gastroenterology Consultants | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jeffrey J. Warren is one of 9,643 internists in New York
Internal medicine is Dr. Warren's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Warren is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Warren
Counts of internists 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. Jeffrey J. Warren billed Medicare for 139 services in 2024
CMS data shows 139 Medicare services from Dr. Warren across 1 procedure code in 2024, for 21 Medicare patients. Medicare paid $13,931 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Warren's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3172024: 13956%
Dr. Warren compared with the New York median for internists, 2024
- Dr. Warren
- New York median
- Medicare services
- 139vs 42667% below
- Medicare patients
- 21vs 15887% below
- Part D claims
- 65vs 62290% below
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Warren'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeffrey J. Warren treated 21 Medicare patients in 2024, average age 69
CMS counts 21 Medicare patients who saw Dr. Warren in 2024. 75% of them have high blood pressure, and 71% have arthritis. Their average risk score is 2.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Warren's median patient age at 55, with 43% women.
Chronic conditions among Dr. Warren's Medicare patients, 2024
- High blood pressure75%
- Arthritis71%
- High cholesterol71%
- Diabetes57%
- Anxiety52%
- Heart failure52%
- Mood disorders52%
Share of Medicare patients with each condition. A patient can have several.
Dr. Warren's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jeffrey J. Warren wrote 33 Medicare Part D claims in 2024
In 2024, Dr. Warren wrote 33 Medicare Part D claims. 85% of them were for generic drugs. They cover 4 drugs, with $4,346 in total drug cost. In 2019, CMS named 236 claims across 14 drugs.
Dr. Warren's Part D claims by kind of drug, 2024
- Generic28 claims85%
- Brand-name and other5 claims15%
Dr. Warren's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 2362020: 6572%
Drugs named by CMS: 4 in 2020, 14 in 2019.
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. Jeffrey J. Warren scored 79 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Dr. Warren for performance year 2024, reported as part of a group. Dr. Warren accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Warren's MIPS scores, performance year 2024
- 79of 100Final score
- 69.3of 100Quality
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Jeffrey J. Warren received $526 in industry payments from 2017 to 2025
CMS Open Payments shows 21 general payments to Dr. Warren from 9 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Vanda Pharmaceuticals Inc. paid the most, $148.
General payments to Dr. Warren by program year, 2017 to 2025
Companies that paid Dr. Warren the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jeffrey J. Warren's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jeffrey J. Warren
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What is Dr. Jeffrey J. Warren's NPI number?
Dr. Jeffrey J. Warren's NPI number is 1316140627. It was assigned on June 6, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey J. Warren?
Dr. Jeffrey J. Warren is an internist in West Islip, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jeffrey J. Warren practice?
Dr. Warren practices at 1111 Montauk Hwy, West Islip, NY 11795. Dr. Warren's primary practice is Island Gastroenterology Consultants in West Islip, New York. Dmand AI also links Dr. Warren to 1 group practice or clinic and 1 medical group.
What is Dr. Jeffrey J. Warren's office phone number?
The practice phone on file for Dr. Warren is (631) 669-1171.
What is Dr. Jeffrey J. Warren's medical license number?
Dr. Warren holds Illinois license 125050254.
Which hospitals is Dr. Jeffrey J. Warren affiliated with?
Dr. Warren is affiliated with Vibra Hospital of Denver.
What medical group is Dr. Jeffrey J. Warren part of?
Dr. Warren is linked to Critical Care and Pulmonary Consultants (CCPC). Dmand AI links Dr. Warren to 1 more medical group.
Does Dr. Jeffrey J. Warren accept Medicare?
Yes. CMS data shows Dr. Warren billed Medicare for 139 services in 2024, and Dr. Warren accepts Medicare assignment.
What is Dr. Jeffrey J. Warren's MIPS score?
Dr. Warren's MIPS final score for performance year 2024 is 79 out of 100, reported as part of a group.
How many Medicare patients does Dr. Jeffrey J. Warren see?
CMS counts 21 Medicare patients who saw Dr. Warren in 2024, with an average age of 69.
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What services does Dr. Jeffrey J. Warren bill to Medicare?
In 2024, Dr. Warren's most billed Medicare services were hospital inpatient care (99233).
What drugs does Dr. Jeffrey J. Warren prescribe most?
In 2020 Medicare Part D data, Dr. Warren's most prescribed drugs by claims were Levothyroxine Sodium, Divalproex Sodium and Atorvastatin Calcium.
Has Dr. Jeffrey J. Warren received payments from drug or device companies?
CMS Open Payments shows $526 in general payments to Dr. Warren from 9 companies from 2017 to 2025. The largest total came from Vanda Pharmaceuticals Inc.
How long has Dr. Jeffrey J. Warren been practicing?
Dr. Warren graduated from medical school in 2005, 21 years ago.
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