Owen C. Thomas, MD
Radiation Oncology Physician · Rehoboth Beach, DE
Owen C. Thomas, MD is a radiation oncology physician with a practice address in Rehoboth Beach, Delaware, and NPI 1043412935, issued on Jun 3, 2007. Check the license (Delaware C10010086, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Owen C. Thomas
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- C10010086 DE
Self-reported in NPPES; status is on the state search - Practice location
- 18947 John J Williams Hwy Unit 101, Rehoboth Beach, DE 19971
- Phone
- (302) 645-3775
- Enumerated
- Jun 3, 2007
- Record last updated
- Jun 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (302) 645-3774
- Medicare enrollment
- Enrolled (PECOS I20120808000275); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 19 in Delaware → Look up another NPI →
Also registered at 18947 John J Williams Hwy Unit 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vidya Balkishun, PA-CPhysician Assistant1750432142
- Alexander Chase, PA-CPhysician Assistant1740684653
- Anne Conway, RNPsychiatric/Mental Health Nurse Practitioner1568917326
- Nisarg Desai, MDMedical Oncology Physician1174768956
- Jennifer Hung, M.D.Radiation Oncology Physician1720203235
- Madeline Kuchta, PA-CPhysician Assistant1477346872
Verify Owen C. Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C10010086Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% more Medicare Part D claims than the average radiation oncology physician in 2024
197 Medicare Part D claims for 80 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 20 claims were for opioids.
Most prescribed
- Tamsulosin Hcl43 claims
- Memantine Hcl21 claims
- Gabapentin16 claims
- Oxycodone Hcl12 claims
- Pantoprazole Sodium11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 46.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $223.88
11 payments; by number, the most common kind was food and beverage; the largest payer was Sobi, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Delmarva Radiation Services, PARehoboth Beach, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Owen C. Thomas among 19 radiation oncology physician records in Delaware
Owen C. Thomas, MD is one of 19 radiation oncology physician records with a practice address in Delaware. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 58% of them.
- NPI issued2007 · 58% of these records are older, 26% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2007 · median 2000 among the 14 with a school on file
- Record last updated2021 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 radiation oncology physician records list a practice address in Rehoboth Beach
They are 4 of the 291 NPPES records with a practice address in Rehoboth Beach, and 19 radiation oncology physician records in Delaware.
All 19 in Delaware → Every provider in Rehoboth Beach → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Jennifer Hung, M.D.Rehoboth Beach, DE 199711720203235
- Andrejs Strauss, M.D.Rehoboth Beach, DE 199711356343552
- Samuel Swisher-McClure, MDRehoboth Beach, DE 199711669675880
- Donald Tilton, D.O.Dover, DE 199041952380123
- John Lahaniatis, M.D.Dover, DE 199011326023102
- Tony Lee, MDDover, DE 199011588665178
- Khanh Nguyen, MDDover, DE 199011326144841
- Yangyang Shi, MDDover, DE 199011134709751
Common questions
What is Owen C. Thomas, MD's NPI number?
Owen C. Thomas, MD's National Provider Identifier (NPI) is 1043412935, issued on Jun 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Owen C. Thomas, MD located?
The NPPES record lists a practice address at 18947 John J Williams Hwy Unit 101, Rehoboth Beach, DE, 19971. Phone: (302) 645-3775. Providers update this record themselves, so call before visiting.
How can I verify Owen C. Thomas, MD's license?
NPPES lists Delaware license number C10010086, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Owen C. Thomas, MD prescribe under Medicare Part D?
In 2024, Owen C. Thomas, MD had 197 Medicare Part D claims for 80 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Owen C. Thomas, MD's MIPS final score?
The 2023 MIPS final score is 46.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.