Dr. Ronald D. Ennis, MD

  • New Brunswick, NJ
  • Radiation oncologist
NPI1780668400PAC ID5597714949
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
Social profiles

Primary practice

Robert Wood Johnson University Hospital

Hospital · New Brunswick, New Jersey

See all 8 affiliations

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.

View contacts for free

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 and contact details
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 HospitalPrimary
    One Robert Wood Johnson Place, New Brunswick, NJ 08901 · Middlesex CountyPhone(732) 828-3000
  • Robert Wood Johnson University Hospital - New Brunswick
    1 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.

See all 8 affiliations for Dr. Ennis

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.

EHR by site
SiteEHR vendor and product
Robert Wood Johnson University HospitalAvailable with a free account
+1 more site and 5 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Dr. Ennis practices

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 JerseyPrimaryLicense 25MA09380900 · 2013 to 2027 · taxonomy 2085R0001X
  • New York licenseLicense 196138 · 1994 to 2026
  • Connecticut license1992 to 2005

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.

Medicare services, 20241,216
Medicare patients158
Paid by Medicare$85,638
Procedure codes15

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.

See all procedures by Dr. Ennis

Need commercial claims for Dr. Ennis?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ennis and other radiation oncologists in New Jersey.

Book a meeting

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.

Medicare patients, 2024158
Average age74
Average risk score1.41
Also on Medicaid15%

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

  1. Cancer75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Arthritis49%
  5. Diabetes44%
  6. Ischemic heart disease31%
  7. Anxiety22%
  8. 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.

Part D claims, 2024288
Drugs named by CMS6
Total drug cost$75,435
Part D patients62

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.

See all prescribing by Dr. Ennis

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)

For MedTech and pharma teams

Find radiation oncologists like Dr. Ennis by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

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.

Papers56
Years published2011 to 2024

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

Recent publications by Dr. Ennis

See all 56 publications and co-authors

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.

How network discovery works

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

  1. 1Phase 1: 1 trial
  2. 2Phase 1/2: 2 trials
  3. NonePhase 2: no trials
  4. NonePhase 3: no trials
  5. 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

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

$3.8Kin total
  • 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.

See all payments to Dr. Ennis

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

  1. 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.

  1. Medical schoolYale School of Medicine
  2. Board certified in radiation oncologyAmerican Board of Radiology

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.

Plan types Dr. Ennis accepts, by number of carriers

  1. HMO9
  2. PPO8
  3. Medicare5
  4. EPO4
  5. POS3

Source: Dmand AI Insurance Network Data

Sources for Dr. Ronald D. Ennis's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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.

Selling to radiation oncology practices?

See radiation oncologists in New Jersey by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)