Dr. Ronald D. Ennis, MD
- Medicare services, 2024
- 1,216
- Medicare patients, 2024
- 158
- Part D claims, 2024
- 288
- Publications
- 56
- Clinical trials
- 3
- Practice address
- One Robert Wood Johnson Place, New Brunswick, NJ 08901
- Practice phone
- Call (732) 828-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ennis' 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. Ronald D. Ennis is a radiation oncologist in New Brunswick, New Jersey
Dr. Ennis practices at Robert Wood Johnson University Hospital in New Brunswick, New Jersey, part of RWJBarnabas Health.
Dr. Ennis' NPI, 1780668400, was assigned on December 6, 2005. Dr. Ennis graduated from Yale School of Medicine in 1990. Dr. Ennis holds New Jersey license 25MA09380900.
- NPI
- 1780668400NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597714949
- NPI enumeration date
- December 6, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (732) 828-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ronald D. Ennis practices at 2 locations in New Brunswick, New Jersey
Dr. Ennis' primary practice is Robert Wood Johnson University Hospital, at One Robert Wood Johnson Place, New Brunswick, NJ 08901 in Middlesex County. The practice phone is (732) 828-3000. Dr. Ennis also practices at Robert Wood Johnson University Hospital - New Brunswick, 1 Robert Wood Johnson Pl, New Brunswick, NJ 08901.
- Robert Wood Johnson University HospitalPrimaryOne Robert Wood Johnson Place, New Brunswick, NJ 08901 · Middlesex CountyPhone(732) 828-3000
- Robert Wood Johnson University Hospital - New Brunswick1 Robert Wood Johnson Pl, New Brunswick, NJ 08901 · Middlesex CountyPhone(732) 828-3000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Ronald D. Ennis is affiliated with 2 sites of care and 6 medical groups
Dr. Ennis' primary practice is Robert Wood Johnson University Hospital in New Brunswick, New Jersey, part of RWJBarnabas Health. Dr. Ennis is also affiliated with Mount Sinai West. The medical group on file is University Neuro-Ophthalmology Associates. Dmand AI also links Dr. Ennis to 5 more medical groups, 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. Ronald D. Ennis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ennis practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Robert Wood Johnson University Hospital | Available with a free account |
| +1 more site and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across RWJBarnabas Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ronald D. Ennis is one of 145 radiation oncologists in New Jersey
Radiation oncology is Dr. Ennis' primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Ennis is board certified in radiation oncology by the American Board of Radiology. Dmand AI has Dr. Ennis' licenses on file in 3 states: New Jersey, New York and Connecticut.
Specialties and state licenses
- Radiation oncology, New JerseyPrimary
- New York license
- Connecticut license
Clinical focus
Dmand AI lists bladder cancer radiation, breast cancer radiation, cervical cancer radiation, prostate cancer radiation and uterine cancer radiation among the conditions Dr. Ennis treats.
Radiation oncologists near Dr. Ennis
Counts of radiation oncologists 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. Ronald D. Ennis billed Medicare for 1,216 services in 2024
CMS data shows 1,216 Medicare services from Dr. Ennis across 15 procedure codes in 2024, for 158 Medicare patients. Medicare paid $85,638 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ennis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 7702024: 1,04035%
- Office and hospital visits
- 2023: 1112024: 16448%
- Surgery
- 2023: 02024: 12
- Other services
- 2023: 262024: 0100%
Dr. Ennis compared with the New Jersey median for radiation oncologists, 2024
- Dr. Ennis
- New Jersey median
- Medicare services
- 1,216vs 1,81333% below
- Medicare patients
- 158vs 21025% below
- Part D claims
- 213vs 464.6 times
Medians across 135 radiation oncologists in New Jersey with Dmand AI profiles that report each measure.
Dr. Ennis' 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. Ennis and other radiation oncologists in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronald D. Ennis treated 158 Medicare patients in 2024, average age 74
CMS counts 158 Medicare patients who saw Dr. Ennis in 2024. The largest group is 65 to 74, with 74 patients. 75% of them have cancer, and 75% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.41, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ennis' median patient age at 74, with 16% women.
Dr. Ennis' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ennis' Medicare patients by sex, 2024
- Women3723%
- Men12177%
Chronic conditions among Dr. Ennis' Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Diabetes44%
- Ischemic heart disease31%
- Anxiety22%
- Atrial fibrillation18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ennis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women16%
- Men83%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ronald D. Ennis wrote 288 Medicare Part D claims in 2024
In 2024, Dr. Ennis wrote 288 Medicare Part D claims for 62 patients. 80% of them were for generic drugs. CMS names the drug for 213 of them, across 6 drugs with 11 or more claims each, at $75,435 in total drug cost. In 2023, CMS named 215 claims across 6 drugs.
Dr. Ennis' Part D claims by kind of drug, 2024
- Generic230 claims80%
- Brand-name and other58 claims20%
Dr. Ennis' 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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2152024: 2131%
Drugs named by CMS: 6 in 2024, 6 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. Ronald D. Ennis offers telehealth to Medicare patients
Dr. Ennis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ennis as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ronald D. Ennis has 56 publications on record
Dmand AI links 56 papers to Dr. Ennis, published from 2011 to 2024. 2020 was the busiest year, with 4. The most frequent topics are Prostatic Neoplasms, Radiation Oncology and Brachytherapy. Dr. Ennis has published most often in Int J Radiat Oncol Biol Phys. Dr. Ennis' most frequent co-authors are Mitchell Clark Benson, MD, Lara Hathout and Matthew Pierre Deek, MD.
Dr. Ennis' papers by year, 2012 to 2024
Topics Dr. Ennis writes about most
- Prostatic Neoplasms
- Radiation Oncology
- Brachytherapy
- Prostate-Specific Antigen
- Radiotherapy Dosage
- Androgen Antagonists
- Antineoplastic Combined Chemotherapy Protocols
- Chemotherapy, Adjuvant
Dr. Ennis' most frequent co-authors
- Mitchell Clark Benson, MD7 shared papers
- Lara Hathout5 shared papers
- Matthew Pierre Deek, MD4 shared papers
Recent publications by Dr. Ennis
JCO Oncol Pract
See who Dr. Ennis researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ennis works with, so you can find a warm path to the right radiation oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ronald D. Ennis has worked on 3 clinical trials
Dmand AI links Dr. Ennis to 3 clinical trials, 2 of them phase 1/2 studies. Conditions studied include Prostatic Neoplasms, Prostatic Diseases and Carcinoma, Renal Cell. Beth Israel Medical Center sponsors the most, 2.
Clinical trials with Dr. Ennis by phase
- 1Phase 1: 1 trial
- 2Phase 1/2: 2 trials
- NonePhase 2: no trials
- NonePhase 3: no trials
- NonePhase 4: no trials
Conditions in Dr. Ennis' trials
- Prostatic Neoplasms
- Prostatic Diseases
- Carcinoma, Renal Cell
- Kidney Neoplasms
Investigators on the most trials with Dr. Ennis
Recent clinical trials with Dr. Ennis
Using Magnetic Resonance Imaging (MRI) to Guide Differential-Dose Prostate Brachytherapy (opens in a new tab)
To Evaluate Stereotactic Body Radiotherapy for Treatment of Primary Renal Cell Carcinoma Tumors (opens in a new tab)
Using Ultrasound Spectrum Analysis (USA) to Guide Dose Escalated Prostate Brachytherapy (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Ronald D. Ennis received $3,817 in industry payments from 2016 to 2025
CMS Open Payments shows 23 general payments to Dr. Ennis from 8 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 44% of the total. Siemens Medical Solutions USA, Inc. paid the most, $2,211.
General payments to Dr. Ennis by program year, 2016 to 2025
General payments to Dr. Ennis by kind, 2016 to 2025
- Speaker and faculty fees$1,68044%
- Travel and lodging$1,42237%
- Food and beverage$71519%
Companies that paid Dr. Ennis 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. Ronald D. Ennis has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ennis.
Awards and honors for Dr. Ennis
- Undated
- Castle Connolly Best Doctors
Source: Dmand AI Professional Profile Data
Dr. Ronald D. Ennis graduated from Yale School of Medicine
Dr. Ennis graduated from Yale School of Medicine in 1990. Dr. Ennis is a member of ASTRO and ASCO.
- Medical school
- Board certified in radiation oncology
Source: Dmand AI Professional Profile Data
Dr. Ronald D. Ennis accepts plans from 15 insurance carriers
Dr. Ennis is in network with 15 carriers, including Aetna, United Healthcare and Cigna. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Cigna
- Elevance
- Aspirus Health Plan
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- +7 more carriersWith a free account
Plan types Dr. Ennis accepts, by number of carriers
- HMO9
- PPO8
- Medicare5
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Ronald D. Ennis'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 Affiliation DataDmand AI Practice 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Ronald D. Ennis
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. Ronald D. Ennis' NPI number?
Dr. Ronald D. Ennis' NPI number is 1780668400. It was assigned on December 6, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronald D. Ennis?
Dr. Ronald D. Ennis is a radiation oncologist in New Brunswick, New Jersey. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Ronald D. Ennis practice?
Dr. Ennis practices at One Robert Wood Johnson Place, New Brunswick, NJ 08901. Dr. Ennis also practices at 1 Robert Wood Johnson Pl, New Brunswick, NJ 08901. Dr. Ennis' primary practice is Robert Wood Johnson University Hospital in New Brunswick, New Jersey, part of RWJBarnabas Health. Dmand AI also links Dr. Ennis to 5 medical groups.
What is Dr. Ronald D. Ennis' office phone number?
The practice phone on file for Dr. Ennis is (732) 828-3000.
What is Dr. Ronald D. Ennis' medical license number?
Dr. Ennis holds New Jersey license 25MA09380900, one of the licenses on file in 3 states.
Which states has Dr. Ronald D. Ennis been licensed in?
Dmand AI has state licenses on file for Dr. Ennis in New Jersey (2013 to 2027), New York (1994 to 2026) and Connecticut (1992 to 2005).
Which hospitals is Dr. Ronald D. Ennis affiliated with?
Dr. Ennis practices at Robert Wood Johnson University Hospital in New Brunswick, New Jersey. Dr. Ennis is also affiliated with Mount Sinai West.
What medical group is Dr. Ronald D. Ennis part of?
Dr. Ennis is linked to University Neuro-Ophthalmology Associates. Dmand AI links Dr. Ennis to 5 more medical groups.
Does Dr. Ronald D. Ennis accept Medicare?
Yes. CMS data shows Dr. Ennis billed Medicare for 1,216 services in 2024, and Dr. Ennis accepts Medicare assignment.
Does Dr. Ronald D. Ennis offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ennis as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Ronald D. Ennis see?
CMS counts 158 Medicare patients who saw Dr. Ennis in 2024, with an average age of 74.
Is Dr. Ronald D. Ennis board certified?
Yes. Dr. Ennis is board certified in radiation oncology by the American Board of Radiology.
What services does Dr. Ronald D. Ennis bill to Medicare?
In 2024, Dr. Ennis' most billed Medicare services were radiation oncology (77014), radiation oncology (77300) and radiation oncology (77427).
Where did Dr. Ronald D. Ennis go to medical school?
Dr. Ennis graduated from Yale School of Medicine in 1990.
What drugs does Dr. Ronald D. Ennis prescribe most?
In 2024 Medicare Part D data, Dr. Ennis' most prescribed drugs by claims were Tamsulosin HCl, Myrbetriq and Trospium Chloride.
Has Dr. Ronald D. Ennis received payments from drug or device companies?
CMS Open Payments shows $3,817 in general payments to Dr. Ennis from 8 companies from 2016 to 2025. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. Ronald D. Ennis been practicing?
Dr. Ennis graduated from medical school in 1990, 36 years ago.
Does Dr. Ronald D. Ennis do research?
Dmand AI links 56 publications to Dr. Ennis, published from 2011 to 2024. Dr. Ennis has worked on 3 clinical trials.
Who does Dr. Ronald D. Ennis publish with?
Dr. Ennis' most frequent co-authors are Mitchell Clark Benson, MD (7 shared papers), Lara Hathout (5 shared papers) and Matthew Pierre Deek, MD (4 shared papers).
What insurance does Dr. Ronald D. Ennis accept?
Dr. Ennis is in network with 15 carriers, including Aetna, United Healthcare and Cigna. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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