Gregory Christopher Treharne, M.D.
Radiation Oncology Physician · Pottsville, PA
Gregory Christopher Treharne, M.D. is a radiation oncology physician with a practice address in Pottsville, Pennsylvania, and NPI 1972875763, issued on Feb 8, 2012. Check the license (Pennsylvania MD462891, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Gregory Christopher Treharne
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- MD462891 PA
336102126 IL
Self-reported in NPPES; status is on the state search - Practice location
- 100 One Norwegian Plaza, Pottsville, PA 17901
- Phone
- (570) 622-8500
- Enumerated
- Feb 8, 2012
- Record last updated
- Aug 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (570) 622-0261
- Medicare enrollment
- Enrolled (PECOS I20171212002719); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 383 in Pennsylvania → Look up another NPI →
Verify Gregory Christopher Treharne in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD462891Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average radiation oncology physician in 2024
28 Medicare Part D claims for 15 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $681.44
3 payments; by number, the most common kind was food and beverage; the largest payer was Siemens Medical Solutions USA, 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
- Geisinger ClinicPottsville, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Christopher Treharne among 383 radiation oncology physician records in Pennsylvania
Gregory Christopher Treharne, M.D. is one of 383 radiation oncology physician records with a practice address in Pennsylvania. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 70% of them.
- NPI issued2012 · 70% of these records are older, 26% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2010 · median 2004 among the 285 with a school on file
- Record last updated2020 · 60% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Pennsylvania
There are 383 radiation oncology physician records in Pennsylvania.
All 383 in Pennsylvania → Every provider in Pottsville → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Gary Fisher, DOPottsville, PA 179011801881875
- Wolfgang Baerwald, MDNew Philadelphia, PA 179591902808009
- David Moylan, MDNew Philadelphia, PA 179591447245899
- Fiori AliteLewisburg, PA 178371811289127
- Bradley Kramer, M.D.Lewisburg, PA 178371144264201
- Alfred Christie, M.D.Danville, PA 178221073589669
- Ahmed Mohamed Kamal Halima, M.B.B.CHDanville, PA 178221538620877
- Heath Mackley, MDDanville, PA 178221336346659
Common questions
What is Gregory Christopher Treharne, M.D.'s NPI number?
Gregory Christopher Treharne, M.D.'s National Provider Identifier (NPI) is 1972875763, issued on Feb 8, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Christopher Treharne, M.D. located?
The NPPES record lists a practice address at 100 One Norwegian Plaza, Pottsville, PA, 17901. Phone: (570) 622-8500. Providers update this record themselves, so call before visiting.
How can I verify Gregory Christopher Treharne, M.D.'s license?
NPPES lists Pennsylvania license number MD462891, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Christopher Treharne, M.D. prescribe under Medicare Part D?
In 2024, Gregory Christopher Treharne, M.D. had 28 Medicare Part D claims for 15 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
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.