Radiation Oncology in New Hampshire
54 licensed radiation oncologists practicing in New Hampshire across 19 cities.
This page republishes public records from the federal NPI Registry, which every licensed U.S. healthcare provider is required to maintain. These are federal-agency records, not a directory we compile.
Source: NPI Registry · last checked
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NPI Registry records — Radiation Oncology in New Hampshire
24 of 50 shown have disclosed payments in CMS Open Payments (2024)
Showing 50 of 54 federal NPI records, alphabetical by last name. Contact details come directly from the NPI Registry — verify currency with the provider's office. Pharma / device payment disclosures from CMS Open Payments are shown where the physician appears in that federal database.
Edward Herbert Abraham, MD
1455 Higdon Ferry Rd Ste C
Hot Springs, AR 71913 · (501) 622-2100
License: E-8136 (AR)
In 2024, $23 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($23).
Largest single payer: GE HealthCare ($23).
James David Becht, MD
1 Elliot Way, Radiation Oncology Department
Manchester, NH 03103 · (603) 663-1800
License: 7671 (NH)
Jeffrey Vincent Brower, MD, PHD
789 Central Ave
Dover, NH 03820 · (603) 742-8787
License: 17908 (NH)
In 2023, $17 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($17).
James Scott Cordova, MD, PHD
1 Medical Center Dr
Lebanon, NH 03756 · (603) 650-5000
License: 38895 (NH)
Thomas Francis Delaney, MD
1 Medical Center Dr
Lebanon, NH 03756 · (603) 650-6600
License: EL01002 (NH)
In 2023, $284 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($284).
In 2024, $14 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($14).
Largest single payer: Myriad Genetic Laboratories, Inc. ($14).
Lesley Ann Jarvis, MD
1 Medical Center Dr, Dhmc Dept of Radiation Oncology
Lebanon, NH 03756 · (603) 650-6695
License: 13967 (NH)
In 2024, $138 was disclosed to this physician across 7 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($138).
Largest single payer: AstraZeneca Pharmaceuticals LP ($66).
Nirav Kapadia, MD
1 Medical Center Dr, Section of Radiation Oncology
Lebanon, NH 03756 · (603) 650-6614
License: 16115 (NH)
Jeremy David Karlin, MD
9300 Dewitt Loop
Fort Belvoir, VA 22060 · (712) 312-4005
License: PT20482 (ND)
In 2024, $1,929 was disclosed to this physician across 8 transactions by pharmaceutical or medical-device companies.
Mostly charitable contributions ($1,575) and entertainment ($354).
Largest single payer: AstraZeneca Pharmaceuticals LP ($1,575).
Evangelia Katsoulakis, MD
1 Medical Center Dr # 1000
Lebanon, NH 03756 · (603) 650-5000
License: 38160 (NH)
In 2024, $351 was disclosed to this physician across 4 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($351).
Largest single payer: Janssen Scientific Affairs, LLC ($195).
In 2023, $242 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($242).
In 2024, $119 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($119).
Largest single payer: Myriad Genetic Laboratories, Inc. ($119).
In 2023, $17 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($17).
Emily Corinne Mayberry MaCduffie, MD
100 Campus Dr Unit 121
Scarborough, ME 04074 · (207) 396-7788
License: MD28918 (ME)
Arul Mahadevan, MD
789 Central Ave, Seacost Cancer Center
Dover, NH 03820 · (603) 742-8787
License: 35081547 (OH)
In 2024, $61 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($61).
Largest single payer: Novocure Inc. ($61).
Shauna Marie McVorran, MD
1959 Ne Pacific St
Seattle, WA 98195 · (206) 520-5000
License: MD61650370 (WA)
In 2024, $307 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($307).
Largest single payer: Novocure Inc. ($307).
In 2024, $117 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($117).
Largest single payer: Novocure Inc. ($117).
In 2024, $215 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($215).
Largest single payer: AstraZeneca Pharmaceuticals LP ($215).
In 2023, $110 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($110).
In 2023, $18 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($18).
Vivek Laxmikant Patel, MD, PHD
295 Varnum Ave
Lowell, MA 01854 · (978) 937-6274
License: 264896 (MA)
In 2024, $14 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($14).
Largest single payer: Myriad Genetic Laboratories, Inc. ($14).
In 2024, $16 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($16).
Largest single payer: Incyte Corporation ($16).
In 2024, $359 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($359).
Largest single payer: Novocure Inc. ($234).
In 2023, $40 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($40).
In 2023, $25 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($25).
Gregory A. Russo, MD
1 Medical Center Dr, Dhmc - Radiology Oncology
Lebanon, NH 03756 · (603) 650-6600
License: 17279 (NH)
Philip Schaner, MD
1 Medical Center Dr, Dhmc Department of Radiation Oncology
Lebanon, NH 03756 · (603) 650-6695
License: 15004 (NH)
Himanshu Singh, MD
789 Central Ave, Wentworth Douglass Hospital
Dover, NH 03820 · (603) 742-8787
License: 10919 (NH)
Clayton Patrick Smith, MD
121 Corporate Dr
Portsmouth, NH 03801 · (603) 230-6100
License: 25062 (NH)
In 2024, $306 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($306).
Largest single payer: BIOPROTECT MEDICAL, INC. ($215).
In 2023, $21 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($21).
Charles Richard Thomas, MD
1 Medical Center Dr
Lebanon, NH 03756 · (603) 650-6600
License: 22087 (NH)
In 2023, $133 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($133).
Showing 50 of 54. Search all on NPI Registry →
Payment totals shown for the latest published program year (2024). Presence of disclosed payments is not, on its own, a conflict of interest. Physicians dispute records directly with CMS (dispute process). How we show this.
Open Payments figures as displayed on . Corrections flow from the manufacturer through CMS and are adopted on our next refresh.
What this page is: a republication of public federal NPI Registry records, filtered to the radiation oncology taxonomy. It is not a directory we curate, and inclusion is automatic based on each provider's own NPI filing with CMS. Providers who believe their NPI record is inaccurate should update it directly with CMS at npiregistry.cms.hhs.gov; our next refresh adopts the corrected federal record.
Practice info disclaimer: Provider addresses and phone numbers come from the NPI Registry, which providers update at their discretion. Always call ahead to confirm the provider is currently accepting patients and is at the listed address.
Medical disclaimer: This page is not a quality ranking and does not constitute medical advice or endorsement. Choose a provider in consultation with your primary care physician or care team.
Source: NPI Registry (taxonomy: Radiation Oncology) · Last checked: 2026-04-20