Genomic InstabilityMicrosatellite InstabilityRP1Nivolumab
Dr. William T. Derosa, DO
NPI1902894991PAC ID3072508860
- Medicare services, 2024
- 4,931
- Medicare patients, 2024
- 309
- Part D claims, 2024
- 735
- Clinical trials
- 2
- Hospital affiliations
- 2
- Practice address
- 94 Old Short Hills Road, Livingston, NJ 07039
- Practice phone
- Call (973) 322-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Derosa's professional email, personal email and mobile number
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Dr. William T. Derosa is a hematologist and oncologist in Livingston, New Jersey
Dr. Derosa practices at Cooperman Barnabas Medical Center in Livingston, New Jersey, part of RWJBarnabas Health.
Dr. Derosa's NPI, 1902894991, was assigned on October 12, 2005. Dr. Derosa graduated from A. T. Still University Kirksville College of Osteopathic Medicine in 1980. Dr. Derosa holds New Jersey license 25MB03927200.
NPI and contact details
- NPI
- 1902894991NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072508860
- NPI enumeration date
- October 12, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (973) 322-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William T. Derosa practices at Cooperman Barnabas Medical Center in Livingston, New Jersey
Dr. Derosa's primary practice is Cooperman Barnabas Medical Center, at 94 Old Short Hills Road, Livingston, NJ 07039 in Essex County. The practice phone is (973) 322-5000.
- Cooperman Barnabas Medical Center94 Old Short Hills Road, Livingston, NJ 07039 · Essex CountyPhone(973) 322-5000
Source: Dmand AI Affiliation Data
Dr. William T. Derosa is affiliated with 4 sites of care and 2 medical groups
Dr. Derosa's primary practice is Cooperman Barnabas Medical Center in Livingston, New Jersey, part of RWJBarnabas Health. Dr. Derosa is also affiliated with Morristown Medical Center. The medical group on file is RWJBarnabas Health Medical Group. Dmand AI also links Dr. Derosa to 2 more group practices and clinics and 1 medical group, each named with a free account.
Morristown Medical CenterRWJBarnabas Health Medical Group2 group practices and clinicsNames with a free account1 medical groupName with a free account
See all 6 affiliations for Dr. DerosaSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William T. Derosa's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Derosa practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cooperman Barnabas Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William T. Derosa is one of 364 hematologists and oncologists in New Jersey
Hematology and oncology is Dr. Derosa's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Derosa is licensed in New Jersey.
Specialties and state licenses
- Hematology and oncology, New JerseyPrimary
Hematologists and oncologists near Dr. Derosa
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
364hematologists and oncologists in New Jersey13hematologists and oncologists in Livingston10hematologists and oncologists at Cooperman Barnabas Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William T. Derosa billed Medicare for 4,931 services in 2024
CMS data shows 4,931 Medicare services from Dr. Derosa across 24 procedure codes in 2024, for 309 Medicare patients. Medicare paid $169,726 for them.
Medicare services, 20244,931
Medicare patients309
Paid by Medicare$169,726
Procedure codes24
Dr. Derosa's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 7,0212024: 3,30753%
- Office and hospital visits
- 2023: 1,2902024: 1,08816%
- Surgery
- 2023: 1,1682024: 53654%
- Tests and treatments
- 2023: 282024: 0100%
- Other services
- 2023: 282024: 0100%
Where Dr. Derosa's Medicare services took place, 2024
- In an office4,64294%
- In a facility2896%
Dr. Derosa compared with the New Jersey median for hematologists and oncologists, 2024
- Dr. Derosa
- New Jersey median
- Medicare services
- 4,931vs 1,5153.3 times
- Medicare patients
- 309vs 3378% below
- Part D claims
- 581vs 37854% above
Medians across 349 hematologists and oncologists in New Jersey with Dmand AI profiles that report each measure.
Dr. Derosa'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. Derosa and other hematologists and oncologists in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William T. Derosa treated 309 Medicare patients in 2024, average age 77
CMS counts 309 Medicare patients who saw Dr. Derosa in 2024. The largest group is 75 to 84, with 130 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.98, 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. Derosa's median patient age at 75, with 54% women.
Medicare patients, 2024309
Average age77
Average risk score1.98
Dr. Derosa's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Derosa's Medicare patients by sex, 2024
- Women15650%
- Men15350%
Chronic conditions among Dr. Derosa's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease40%
- Cancer35%
- Diabetes32%
- Atrial fibrillation28%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Derosa's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William T. Derosa wrote 735 Medicare Part D claims in 2024
In 2024, Dr. Derosa wrote 735 Medicare Part D claims for 114 patients. 61% of them were for generic drugs. CMS names the drug for 581 of them, across 26 drugs with 11 or more claims each, at $2,781,389 in total drug cost. In 2023, CMS named 633 claims across 26 drugs.
Part D claims, 2024735
Drugs named by CMS26
Total drug cost$2.8M
Part D patients114
Dr. Derosa's Part D claims by kind of drug, 2024
- Generic447 claims61%
- Brand-name288 claims39%
Dr. Derosa'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. Derosa's Part D claims, 2024
- Antibiotics7%54 of 735 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: 6332024: 5818%
Drugs named by CMS: 26 in 2024, 26 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
How Dr. William T. Derosa takes part in Medicare
Dr. Derosa accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William T. Derosa has worked on 2 clinical trials
Dmand AI links Dr. Derosa to 2 clinical trials. 1 is still active or recruiting. Conditions studied include Genomic Instability, Pancreatic Neoplasms and Microsatellite Instability.
Conditions in Dr. Derosa's trials
- Genomic Instability
- Pancreatic Neoplasms
- Microsatellite Instability
- Pancreatic Diseases
Investigators on the most trials with Dr. Derosa
- Maen Abdelrahim, MD1 shared trial
- Sunil Babu, MD1 shared trial
- Ivan Dario Bedoya Apraez, MD1 shared trial
Recent clinical trials with Dr. Derosa
Pancreatic NeoplasmsPancreatic DiseasesFOLFOXPegilodecakin
Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. William T. Derosa received $147,292 in industry payments from 2016 to 2023
CMS Open Payments shows 365 general payments to Dr. Derosa from 48 drug and device companies from 2016 to 2023. Speaker and faculty fees make up the largest share, 68% of the total. Celgene Corporation paid the most, $67,503. It also lists 2 research payments totaling $834 in 2017.
General payments to Dr. Derosa by program year, 2016 to 2023
General payments to Dr. Derosa by kind, 2016 to 2023
$147.3Kin total
- Speaker and faculty fees$99,75068%
- Travel and lodging$28,03619%
- Consulting fees$11,4508%
- Food and beverage$7,8115%
- Education$2440%
Companies that paid Dr. Derosa the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William T. Derosa graduated from A. T. Still University Kirksville College of Osteopathic Medicine
Dr. Derosa graduated from A. T. Still University Kirksville College of Osteopathic Medicine in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William T. Derosa'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) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 T. Derosa
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 T. Derosa's NPI number?
Dr. William T. Derosa's NPI number is 1902894991. It was assigned on October 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William T. Derosa?
Dr. William T. Derosa is a hematologist and oncologist in Livingston, New Jersey. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. William T. Derosa practice?
Dr. Derosa practices at 94 Old Short Hills Road, Livingston, NJ 07039. Dr. Derosa's primary practice is Cooperman Barnabas Medical Center in Livingston, New Jersey, part of RWJBarnabas Health. Dmand AI also links Dr. Derosa to 2 group practices and clinics and 1 medical group.
What is Dr. William T. Derosa's office phone number?
The practice phone on file for Dr. Derosa is (973) 322-5000.
What is Dr. William T. Derosa's medical license number?
Dr. Derosa holds New Jersey license 25MB03927200.
Which hospitals is Dr. William T. Derosa affiliated with?
Dr. Derosa practices at Cooperman Barnabas Medical Center in Livingston, New Jersey. Dr. Derosa is also affiliated with Morristown Medical Center.
What medical group is Dr. William T. Derosa part of?
Dr. Derosa is linked to RWJBarnabas Health Medical Group. Dmand AI links Dr. Derosa to 1 more medical group.
Does Dr. William T. Derosa accept Medicare?
Yes. CMS data shows Dr. Derosa billed Medicare for 4,931 services in 2024, and Dr. Derosa accepts Medicare assignment.
How many Medicare patients does Dr. William T. Derosa see?
CMS counts 309 Medicare patients who saw Dr. Derosa in 2024, with an average age of 77.
What services does Dr. William T. Derosa bill to Medicare?
In 2024, Dr. Derosa's most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99215) and lab and pathology test (85025).
Show 5 more questionsShow fewer questions
Where did Dr. William T. Derosa go to medical school?
Dr. Derosa graduated from A. T. Still University Kirksville College of Osteopathic Medicine in 1980.
What drugs does Dr. William T. Derosa prescribe most?
In 2024 Medicare Part D data, Dr. Derosa's most prescribed drugs by claims were Eliquis, Jakafi and Sulfamethoxazole-Trimethoprim.
Has Dr. William T. Derosa received payments from drug or device companies?
CMS Open Payments shows $147,292 in general payments to Dr. Derosa from 48 companies from 2016 to 2023. The largest total came from Celgene Corporation.
How long has Dr. William T. Derosa been practicing?
Dr. Derosa graduated from medical school in 1980, 46 years ago.
Does Dr. William T. Derosa do research?
Dr. Derosa has worked on 2 clinical trials.
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