Radiation Oncologists in Connecticut
Data updated monthly · Last refresh October 2026
82 Radiation Oncology providers practice in Connecticut, including 25 (30%) offering telehealth. The largest concentration is in New Haven. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
82providers
25telehealth
New Haventop city
Radiation Oncology by city in Connecticut
Choose a city to see providers there.
Where Radiation Oncologists in Connecticut practice
From CMS Medicare enrollment records covering 54 of the 82 providers listed here (66%). Providers who do not bill Medicare are not included in these figures.
15%solo or small practice (under 10 clinicians)
4%mid-size group (10 to 99)
81%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Radiation Oncologists | All clinicians in group | Main city |
| Yale University | 26 | 2,632 | New Haven |
| Hartford Radiation Oncology Associates PC | 10 | 11 | Hartford |
| The Charlotte Hungerford Hospital | 9 | 206 | Torrington |
| Nuvance Health Medical Practice Ct Inc. | 5 | 742 | Danbury |
| Radiation Oncology Physicians of Connecticut LLC | 4 | 8 | Norwich |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Radiation Oncologists affiliated |
| Yale-New Haven Hospital | New Haven | Nonprofit | 5 of 5 | 31 |
| Bridgeport Hospital | Bridgeport | Nonprofit | 4 of 5 | 14 |
| Hartford Hospital | Hartford | Nonprofit | 4 of 5 | 10 |
| Lawrence & Memorial Hospital | New London | Nonprofit | 3 of 5 | 7 |
| Danbury Hospital | Danbury | Nonprofit | 4 of 5 | 5 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Radiation Oncology providers in Connecticut
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Bruce Mcgibbon, M.D.Bridgeport, CT · No drug or device payments recorded (2025) ·
(203) 384-3168 Dr. Christopher Iannuzzi, MDBridgeport, CT · $114 in drug and device payments (2025) ·
(203) 576-6133 Dr. Deborah Fang, MDBridgeport, CT · No drug or device payments recorded (2025) ·
(203) 576-5085 Dr. Douglas Housman, M.D.Bristol, CT · $808 in drug and device payments (2025) ·
(860) 582-9800 Dr. Jeffrey Bitterman, MDBristol, CT · No drug or device payments recorded (2025) ·
(860) 582-9800 Dr. Meriem Mokhtech, MDBristol, CT · $468 in drug and device payments (2025) ·
(860) 582-9800 Dr. John Spera, M.D.Danbury, CT · No drug or device payments recorded (2025) ·
(203) 797-7322 Dr. Seema Sanghavi, MDDanbury, CT · $543 in drug and device payments (2025) ·
(203) 797-7532 Dr. Ashwatha Narayana, MDGreenwich, CT · $319 in drug and device payments (2025) · Telehealth ·
(203) 863-3773 Dr. Mark HwangGreenwich, CT · No drug or device payments recorded (2025) · Telehealth ·
(208) 863-3911 Dr. William Aberizk, MDGroton, CT · No drug or device payments recorded (2025) ·
(860) 614-3066 Dr. Adriana Blakaj, M.D., PH.D.Hartford, CT · $39 in drug and device payments (2025) · Telehealth ·
(860) 972-2803 Dr. Andrew Salner, M.D.Hartford, CT · $158 in drug and device payments (2025) ·
(860) 545-2803 Dr. Bruce Kaplan, M.D.Hartford, CT · No drug or device payments recorded (2025) ·
(860) 714-4568 Dr. Charles Rutter, M.D.Hartford, CT · $2,807 in drug and device payments (2025) · Telehealth ·
(860) 545-2803 Dr. David Byun, MDHartford, CT · $1,860 in drug and device payments (2025) · Telehealth ·
(860) 545-2803 Dr. Emily Anstadt LutzHartford, CT · No drug or device payments recorded (2025) ·
(608) 972-2803 Dr. Helaine Bertsch, MDHartford, CT · $2,260 in drug and device payments (2025) · Telehealth ·
(860) 545-5702 Dr. Joshua Doyle, MD, MSHartford, CT · No drug or device payments recorded (2025) ·
(860) 972-2803 Dr. Judith Buckley, M.D.Hartford, CT · No drug or device payments recorded (2025) ·
(860) 545-2803 Dr. Juhi PurswaniHartford, CT · $341 in drug and device payments (2025) ·
(914) 484-0120 Dr. Kenneth Leopold, M.D.Hartford, CT · No drug or device payments recorded (2025) ·
(860) 545-2803 Dr. Richard Shumway, M.D.Hartford, CT · No drug or device payments recorded (2025) ·
(860) 714-4568 Dr. Robert Dowsett, M.D.Hartford, CT · No drug or device payments recorded (2025) ·
(860) 545-2803 Dr. Stephen Hauser, M.D.Hartford, CT · $24 in drug and device payments (2025) ·
(860) 545-2803 Dr. Susan Kim, M.D.Hartford, CT · No drug or device payments recorded (2025) · Telehealth ·
(860) 545-2803 Dr. Timothy Boyd, M.D.Hartford, CT · No drug or device payments recorded (2025) ·
(860) 545-2803 Dr. Allan Kratzer, M.D.Meriden, CT · No drug or device payments recorded (2025) ·
(203) 694-8433 Dr. Allen Silberstein, MDMiddletown, CT · No drug or device payments recorded (2025) ·
(860) 358-2100 Dr. Joseph Weissberg, MDMiddletown, CT · No drug or device payments recorded (2025) ·
(860) 358-2100 Dr. Matthew Listo, M.D.Middletown, CT · No drug or device payments recorded (2025) ·
(860) 358-2100 Dr. Neal Goldberg, MDNew Britain, CT · No drug or device payments recorded (2025) ·
(860) 224-5502 Dr. Abhijit Patel, MD PHDNew Haven, CT · No drug or device payments recorded (2025) ·
(203) 785-2971 Dr. Alisa Rybkin, MDNew Haven, CT · No drug or device payments recorded (2025) ·
(203) 688-4242 Dr. Allison Campbell, MD, PHDNew Haven, CT · No drug or device payments recorded (2025) ·
(203) 688-8300 Dr. Aparna Kesarwala, M.D., PH.D.New Haven, CT · No drug or device payments recorded (2025) ·
(203) 688-2259 Dr. Christin Knowlton, M.D.New Haven, CT · No drug or device payments recorded (2025) · Telehealth ·
(203) 789-3131 Dr. Daniela Gidea-addeo, M.D.New Haven, CT · No drug or device payments recorded (2025) ·
(203) 200-2000 Dr. Daniel Hicks, MDNew Haven, CT · No drug or device payments recorded (2025) · Telehealth ·
(424) 688-4242 Dr. Daniel Yang, MDNew Haven, CT · $82 in drug and device payments (2025) · Telehealth ·
(203) 688-4242 Dr. Genevieve Maquilan, M.D.New Haven, CT · No drug or device payments recorded (2025) ·
(203) 200-2100 Dr. Henry Park, M.D., M.P.H.New Haven, CT · No drug or device payments recorded (2025) ·
(203) 200-2100 Dr. James Hansen, MDNew Haven, CT · No drug or device payments recorded (2025) ·
(203) 200-2100 Dr. James Laird, MDNew Haven, CT · No drug or device payments recorded (2025) ·
(203) 688-4242 Dr. Joanne Weidhaas, MDNew Haven, CT · $69 in drug and device payments (2025) · Telehealth ·
(203) 688-4344 Dr. Joseph Contessa, M.D., PH.D.New Haven, CT · $141 in drug and device payments (2025) ·
(203) 688-4344 Dr. Joyce Chung, MDNew Haven, CT · $23 in drug and device payments (2025) · Telehealth ·
(203) 789-3124 Dr. Kenneth Roberts, MDNew Haven, CT · No drug or device payments recorded (2025) ·
(203) 688-1861 Dr. Kevin Du, MDNew Haven, CT · No drug or device payments recorded (2025) · Telehealth ·
(203) 200-2100 Common questions
How many Radiation Oncology providers are in Connecticut?There are 82 Radiation Oncology providers with active NPI records practicing in Connecticut, according to federal NPPES data refreshed monthly.
Do Radiation Oncology providers in Connecticut offer telehealth?Yes. 25 of the 82 Radiation Oncology providers in Connecticut (about 30%) report offering telehealth services in CMS data.
Which cities in Connecticut have the most Radiation Oncology providers?New Haven (39), Hartford (16), Bristol (4) have the highest concentration of Radiation Oncology providers in Connecticut.
How many Radiation Oncology providers in Connecticut received drug or device company payments?27 of 82 Radiation Oncology providers in Connecticut (33%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Radiation Oncologists in Connecticut work in independent practices or large health systems?Among 54 Radiation Oncologists in Connecticut enrolled in Medicare, 15% bill through a solo or small practice with fewer than 10 clinicians, 4% through a mid-size group of 10 to 99, and 81% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Radiation Oncologists in Connecticut work at?According to CMS facility affiliation records, the Connecticut hospitals where the most Radiation Oncologists hold privileges are Yale-New Haven Hospital in New Haven; Bridgeport Hospital in Bridgeport; Hartford Hospital in Hartford.
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