Dr. Mark J. Dibenedetto, MD
- Medicare services, 2024
- 4,165
- Medicare patients, 2024
- 615
- Part D claims, 2024
- 5,952
- MIPS score, 2024
- 20
- Hospital affiliations
- 3
- Practice address
- 75 North Country Road, Port Jefferson, NY 11777
- Practice phone
- Call (631) 473-1320
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Dibenedetto's professional email, personal email and mobile number
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Dr. Mark J. Dibenedetto is an internist in Port Jefferson, New York
Dr. Dibenedetto practices at Mather Hospital in Port Jefferson, New York, part of Northwell Health.
Dr. Dibenedetto's NPI, 1619940269, was assigned on February 13, 2006. Dr. Dibenedetto graduated from State University of New York Downstate Medical Center College of Medicine in 1985. Dr. Dibenedetto holds New York license 172308.
- NPI
- 1619940269NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638367410
- NPI enumeration date
- February 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (631) 473-1320
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark J. Dibenedetto practices at Mather Hospital in Port Jefferson, New York
Dr. Dibenedetto's primary practice is Mather Hospital, at 75 North Country Road, Port Jefferson, NY 11777 in Suffolk County. The practice phone is (631) 473-1320.
- Mather Hospital75 North Country Road, Port Jefferson, NY 11777 · Suffolk CountyPhone(631) 473-1320
Source: Dmand AI Affiliation Data
Dr. Mark J. Dibenedetto is affiliated with 10 sites of care
Dr. Dibenedetto's primary practice is Mather Hospital in Port Jefferson, New York, part of Northwell Health. Dr. Dibenedetto is also affiliated with Good Samaritan University Hospital St. Charles Campus. Dmand AI also links Dr. Dibenedetto to 1 more hospital, 4 home health agencies, 1 physician office, 1 hospice and 1 skilled nursing facility, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark J. Dibenedetto's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dibenedetto practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mather Hospital | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark J. Dibenedetto is one of 9,643 internists in New York
Internal medicine is Dr. Dibenedetto's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Dibenedetto is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Dibenedetto
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. Mark J. Dibenedetto billed Medicare for 4,165 services in 2024
CMS data shows 4,165 Medicare services from Dr. Dibenedetto across 20 procedure codes in 2024, for 615 Medicare patients. Medicare paid $257,070 for them. Every service was in an office.
Dr. Dibenedetto's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,3932024: 2,2635%
- Other services
- 2023: 1,3152024: 1,02222%
- Tests and treatments
- 2023: 9282024: 8429%
- Lab and pathology
- 2023: 492024: 3822%
Dr. Dibenedetto compared with the New York median for internists, 2024
- Dr. Dibenedetto
- New York median
- Medicare services
- 4,165vs 4269.8 times
- Medicare patients
- 615vs 1583.9 times
- Part D claims
- 5,407vs 6228.7 times
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Dibenedetto'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. Dibenedetto and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark J. Dibenedetto treated 615 Medicare patients in 2024, average age 79
CMS counts 615 Medicare patients who saw Dr. Dibenedetto in 2024. The largest group is 75 to 84, with 320 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.13, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Dibenedetto's median patient age at 78, with 48% women.
Dr. Dibenedetto's Medicare patients by age, 2024
Dr. Dibenedetto's Medicare patients by sex, 2024
- Women32353%
- Men29247%
Chronic conditions among Dr. Dibenedetto's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease35%
- Atrial fibrillation23%
- Osteoporosis20%
- Cancer19%
- Diabetes19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dibenedetto's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark J. Dibenedetto wrote 5,952 Medicare Part D claims in 2024
In 2024, Dr. Dibenedetto wrote 5,952 Medicare Part D claims for 513 patients. 91% of them were for generic drugs. CMS names the drug for 5,407 of them, across 91 drugs with 11 or more claims each, at $370,664 in total drug cost. In 2023, CMS named 5,273 claims across 92 drugs.
Dr. Dibenedetto's Part D claims by kind of drug, 2024
- Generic5,392 claims91%
- Brand-name and other560 claims9%
Dr. Dibenedetto'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. Dibenedetto's Part D claims, 2024
- Opioids0%14 of 5,952 claims
- Antibiotics3%171 of 5,952 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: 5,2732024: 5,4073%
Drugs named by CMS: 91 in 2024, 92 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. Mark J. Dibenedetto scored 20 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 20 out of 100 for Dr. Dibenedetto for performance year 2024, reported individually. Dr. Dibenedetto accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dibenedetto as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Dibenedetto's MIPS scores, performance year 2024
- 20of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 67of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
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. Mark J. Dibenedetto received $105 in industry payments from 2016 to 2024
CMS Open Payments shows 6 general payments to Dr. Dibenedetto from 4 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $33.
General payments to Dr. Dibenedetto by program year, 2016 to 2024
Companies that paid Dr. Dibenedetto the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark J. Dibenedetto graduated from State University of New York Downstate Medical Center College of Medicine
Dr. Dibenedetto graduated from State University of New York Downstate Medical Center College of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark J. Dibenedetto'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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. Mark J. Dibenedetto
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. Mark J. Dibenedetto's NPI number?
Dr. Mark J. Dibenedetto's NPI number is 1619940269. It was assigned on February 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark J. Dibenedetto?
Dr. Mark J. Dibenedetto is an internist in Port Jefferson, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark J. Dibenedetto practice?
Dr. Dibenedetto practices at 75 North Country Road, Port Jefferson, NY 11777. Dr. Dibenedetto's primary practice is Mather Hospital in Port Jefferson, New York, part of Northwell Health. Dmand AI also links Dr. Dibenedetto to 1 hospital, 4 home health agencies, 1 physician office, 1 hospice and 1 skilled nursing facility.
What is Dr. Mark J. Dibenedetto's office phone number?
The practice phone on file for Dr. Dibenedetto is (631) 473-1320.
What is Dr. Mark J. Dibenedetto's medical license number?
Dr. Dibenedetto holds New York license 172308.
Which hospitals is Dr. Mark J. Dibenedetto affiliated with?
Dr. Dibenedetto practices at Mather Hospital in Port Jefferson, New York. Dr. Dibenedetto is also affiliated with Good Samaritan University Hospital St. Charles Campus. Dmand AI links Dr. Dibenedetto to 1 more hospital.
Does Dr. Mark J. Dibenedetto accept Medicare?
Yes. CMS data shows Dr. Dibenedetto billed Medicare for 4,165 services in 2024, and Dr. Dibenedetto accepts Medicare assignment.
Does Dr. Mark J. Dibenedetto offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dibenedetto as offering telehealth services.
What is Dr. Mark J. Dibenedetto's MIPS score?
Dr. Dibenedetto's MIPS final score for performance year 2024 is 20 out of 100, reported individually.
How many Medicare patients does Dr. Mark J. Dibenedetto see?
CMS counts 615 Medicare patients who saw Dr. Dibenedetto in 2024, with an average age of 79.
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What services does Dr. Mark J. Dibenedetto bill to Medicare?
In 2024, Dr. Dibenedetto's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and heart test or procedure (93000).
Where did Dr. Mark J. Dibenedetto go to medical school?
Dr. Dibenedetto graduated from State University of New York Downstate Medical Center College of Medicine in 1985.
What drugs does Dr. Mark J. Dibenedetto prescribe most?
In 2024 Medicare Part D data, Dr. Dibenedetto's most prescribed drugs by claims were Losartan Potassium, Amlodipine Besylate and Metoprolol Succinate.
Has Dr. Mark J. Dibenedetto received payments from drug or device companies?
CMS Open Payments shows $105 in general payments to Dr. Dibenedetto from 4 companies from 2016 to 2024. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Mark J. Dibenedetto been practicing?
Dr. Dibenedetto graduated from medical school in 1985, 41 years ago.
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