Radiation Oncologists in New Hampshire
Data updated monthly · Last refresh October 2026
40 Radiation Oncology providers practice in New Hampshire, including 18 (45%) offering telehealth. The largest concentration is in Lebanon. 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.
40providers
18telehealth
Lebanontop city
Radiation Oncology by city in New Hampshire
Choose a city to see providers there.
Where Radiation Oncologists in New Hampshire practice
From CMS Medicare enrollment records covering 35 of the 40 providers listed here (88%). Providers who do not bill Medicare are not included in these figures.
3%solo or small practice (under 10 clinicians)
43%mid-size group (10 to 99)
54%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Radiation Oncologists | All clinicians in group | Main city |
| Dartmouth-Hitchcock Clinic | 17 | 1,445 | Lebanon |
| Mary Hitchcock Memorial Hospital | 17 | 1,269 | Lebanon |
| Radiation Oncology Associates, PA | 15 | 23 | Manchester |
| Cheshire Medical Center | 3 | 165 | Keene |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Radiation Oncologists affiliated |
| Mary Hitchcock Memorial Hospital | Lebanon | Nonprofit | 3 of 5 | 24 |
| Cheshire Medical Center | Keene | Nonprofit | 4 of 5 | 8 |
| Elliot Hospital | Manchester | Nonprofit | 2 of 5 | 7 |
| Wentworth-Douglass Hospital | Dover | Nonprofit | 4 of 5 | 7 |
| Concord Hospital | Concord | Nonprofit | 3 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 New Hampshire
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. Matthew Katz, M.D.Concord, NH · No drug or device payments recorded (2025) ·
(603) 230-6100 Dr. Thomas Sheldon, M.D.Concord, NH · No drug or device payments recorded (2025) ·
(603) 230-6100 Dr. Asa Nixon, M.D., M.P.H.Dover, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 742-8787 Dr. Himanshu Singh, MDDover, NH · No drug or device payments recorded (2025) ·
(603) 742-8787 Dr. Jeffrey Brower, M.D., PH.D.Dover, NH · No drug or device payments recorded (2025) ·
(603) 742-8787 Dr. Jeffrey Lemons, MDDover, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 742-8787 Dr. Su Metcalfe, M.D., M.P.H.Dover, NH · No drug or device payments recorded (2025) ·
(603) 742-8787 Dr. Abbas Rattani, MDExeter, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 580-7337 Dr. Jaipreet Suri, MDExeter, NH · No drug or device payments recorded (2025) ·
(603) 580-7337 Dr. Virginia Osborn, M.DExeter, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 580-7337 Dr. Jacqueline Lyon, M.D.Keene, NH · No drug or device payments recorded (2025) ·
(603) 354-5400 Dr. Janelle Park, M.D.Keene, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 354-5400 Dr. Steven Levene, MDKeene, NH · No drug or device payments recorded (2025) ·
(603) 354-6500 Dr. Allison MatousLebanon, NH · No drug or device payments recorded (2025) ·
(604) 650-5516 Dr. Anna Fariss, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-6602 Dr. Bassem Zaki, M.D.Lebanon, NH · $174 in drug and device payments (2025) · Telehealth ·
(603) 650-6600 Dr. Charles Thomas, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-6600 Dr. Courtney Jensen, MDLebanon, NH · $234 in drug and device payments (2025) ·
(603) 650-5000 Dr. Evangelia Katsoulakis, M.D.Lebanon, NH · $14,591 in drug and device payments (2025) ·
(603) 650-5000 Dr. Gregory Russo, M.D.Lebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-6600 Dr. James Cordova, MD, PHDLebanon, NH · $184 in drug and device payments (2025) ·
(603) 650-5000 Dr. James Yu, MDLebanon, NH · $1,033 in drug and device payments (2025) · Telehealth ·
(603) 650-5000 Dr. Katie LichterLebanon, NH · $142 in drug and device payments (2025) · Telehealth ·
(603) 650-5000 Dr. Lesley Jarvis, M.D.Lebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-6695 Dr. Liza Stapleford, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5000 Dr. Nirav Kapadia, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-6614 Dr. Philip Schaner, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-6695 Dr. Thomas Delaney, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-6600 Dr. Brian Knab, M.D.Manchester, NH · No drug or device payments recorded (2025) ·
(603) 663-1800 Dr. Bryan Rowe, M.D.Manchester, NH · No drug or device payments recorded (2025) ·
(603) 663-1800 Dr. Charles Leutzinger, M.D.Manchester, NH · No drug or device payments recorded (2025) ·
(603) 663-2361 Dr. David Buchberger, MDManchester, NH · $23 in drug and device payments (2025) ·
(603) 663-1800 Dr. Donald Weiss, M.D.Manchester, NH · No drug or device payments recorded (2025) ·
(603) 663-1800 Dr. James Becht, M.D.Manchester, NH · No drug or device payments recorded (2025) ·
(603) 663-1800 Dr. Ping Zhou, M.D.Manchester, NH · No drug or device payments recorded (2025) ·
(603) 663-1800 Dr. Stephen Harris, M.D.Manchester, NH · $19 in drug and device payments (2025) · Telehealth ·
(603) 663-1800 Dr. Etin-osa OsaNashua, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 880-1590 Dr. Kelli Pointer, M.D.,PH.D.Nashua, NH · No drug or device payments recorded (2025) ·
(603) 577-4170 Dr. Clayton Smith, MDPortsmouth, NH · No drug or device payments recorded (2025) ·
(603) 230-6100 Common questions
How many Radiation Oncology providers are in New Hampshire?There are 40 Radiation Oncology providers with active NPI records practicing in New Hampshire, according to federal NPPES data refreshed monthly.
Do Radiation Oncology providers in New Hampshire offer telehealth?Yes. 18 of the 40 Radiation Oncology providers in New Hampshire (about 45%) report offering telehealth services in CMS data.
Which cities in New Hampshire have the most Radiation Oncology providers?Lebanon (15), Manchester (8), Dover (6) have the highest concentration of Radiation Oncology providers in New Hampshire.
How many Radiation Oncology providers in New Hampshire received drug or device company payments?9 of 40 Radiation Oncology providers in New Hampshire (23%) 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 New Hampshire work in independent practices or large health systems?Among 35 Radiation Oncologists in New Hampshire enrolled in Medicare, 3% bill through a solo or small practice with fewer than 10 clinicians, 43% through a mid-size group of 10 to 99, and 54% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Radiation Oncologists in New Hampshire work at?According to CMS facility affiliation records, the New Hampshire hospitals where the most Radiation Oncologists hold privileges are Mary Hitchcock Memorial Hospital in Lebanon; Cheshire Medical Center in Keene; Elliot Hospital in Manchester.
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