Carcinoma, Non-Small-Cell LungDose Fractionation, RadiationLung Neoplasms
Dr. Gregory Christopher Treharne, MD
NPI1972875763PAC ID2769701358
- Medicare services, 2024
- 1,958
- Medicare patients, 2024
- 188
- Part D claims, 2024
- 28
- Publications
- 1
- Hospital affiliations
- 4
- Practice address
- 100 North Academy Avenue, Danville, PA 17822
- Practice phone
- Call (570) 271-6211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Treharne's professional email, personal email and mobile number
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Dr. Gregory Christopher Treharne is a radiation oncologist in Danville, Pennsylvania
Dr. Treharne practices at Geisinger Medical Center in Danville, Pennsylvania, part of Risant Health.
Dr. Treharne's NPI, 1972875763, was assigned on February 8, 2012. Dr. Treharne graduated from Tulane University School of Medicine in 2010. Dr. Treharne holds Pennsylvania license MD462891.
NPI and contact details
- NPI
- 1972875763NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769701358
- NPI enumeration date
- February 8, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (570) 271-6211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Christopher Treharne practices at Geisinger Medical Center in Danville, Pennsylvania
Dr. Treharne's primary practice is Geisinger Medical Center, at 100 North Academy Avenue, Danville, PA 17822 in Montour County. The practice phone is (570) 271-6211.
- Geisinger Medical Center100 North Academy Avenue, Danville, PA 17822 · Montour CountyPhone(570) 271-6211
Source: Dmand AI Affiliation Data
Dr. Gregory Christopher Treharne is affiliated with 5 sites of care and 2 medical groups
Dr. Treharne's primary practice is Geisinger Medical Center in Danville, Pennsylvania, part of Risant Health. Dr. Treharne is also affiliated with St. Luke's University Hospital - Bethlehem Campus. The medical group on file is Geisinger. Dmand AI also links Dr. Treharne to 2 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
St. Luke's University Hospital - Bethlehem CampusGeisinger2 hospitalsNames with a free account1 group practice or clinicName with a free account1 medical groupName with a free account
See all 7 affiliations for Dr. TreharneSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Christopher Treharne's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Treharne practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Geisinger Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Christopher Treharne is one of 304 radiation oncologists in Pennsylvania
Radiation oncology is Dr. Treharne's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. Treharne's licenses on file in 2 states: Pennsylvania and Illinois.
Specialties and state licenses
- Radiation oncology, PennsylvaniaPrimary
- Illinois license
Radiation oncologists near Dr. Treharne
Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.
304radiation oncologists in Pennsylvania
5radiation oncologists in Danville
4radiation oncologists at Geisinger Medical CenterSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gregory Christopher Treharne billed Medicare for 1,958 services in 2024
CMS data shows 1,958 Medicare services from Dr. Treharne across 13 procedure codes in 2024, for 188 Medicare patients. Medicare paid $119,456 for them. Every service was in an office.
Medicare services, 20241,958
Medicare patients188
Paid by Medicare$119,456
Procedure codes13
Dr. Treharne's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,0192024: 1,69016%
- Office and hospital visits
- 2023: 2552024: 2425%
- Other services
- 2023: 02024: 26
Dr. Treharne compared with the Pennsylvania median for radiation oncologists, 2024
- Dr. Treharne
- Pennsylvania median
- Medicare services
- 1,958vs 1,02791% above
- Medicare patients
- 188vs 16018% above
- Part D claims
- 23vs 3941% below
Medians across 308 radiation oncologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Treharne's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Treharne and other radiation oncologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Christopher Treharne treated 188 Medicare patients in 2024, average age 75
CMS counts 188 Medicare patients who saw Dr. Treharne in 2024. The largest group is 65 to 74, with 86 patients. 75% of them have cancer, and 75% have high blood pressure. 11% are also on Medicaid. Their average risk score is 2.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Treharne's median patient age at 75, with 36% women.
Medicare patients, 2024188
Average age75
Average risk score2.03
Also on Medicaid11%
Dr. Treharne's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Treharne's Medicare patients by sex, 2024
- Women8043%
- Men10857%
Chronic conditions among Dr. Treharne's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease39%
- Chronic kidney disease36%
- COPD31%
- Diabetes27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Treharne's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women36%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Christopher Treharne wrote 28 Medicare Part D claims in 2024
In 2024, Dr. Treharne wrote 28 Medicare Part D claims for 15 patients. 71% of them were for generic drugs. CMS names the drug for 23 of them, across 2 drugs with 11 or more claims each, at $315 in total drug cost. In 2019, CMS named 16 claims across 1 drug.
Part D claims, 202428
Drugs named by CMS2
Total drug cost$315
Part D patients15
Dr. Treharne's Part D claims by kind of drug, 2024
- Generic20 claims71%
- Brand-name and other8 claims29%
Dr. Treharne's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2023
- 2019
- 2023
- Claims for drugs CMS names
- 2019: 162023: 2344%
Drugs named by CMS: 2 in 2023, 1 in 2019.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Gregory Christopher Treharne takes part in Medicare
Dr. Treharne accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory Christopher Treharne has 1 publication on record
Dmand AI links 1 paper to Dr. Treharne in 2018. Dr. Treharne's most frequent co-authors are Shaun Ud Din, MD, Daphna Y. Gelblum, MD and Andreas Rimner, MD.
Papers1
Dr. Treharne's most frequent co-authors
- Shaun Ud Din, MD1 shared paper
- Daphna Y. Gelblum, MD1 shared paper
- Andreas Rimner, MD1 shared paper
Recent publications by Dr. Treharne
See who Dr. Treharne researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Treharne works with, so you can find a warm path to the right radiation oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory Christopher Treharne received $1,939 in industry payments from 2016 to 2025
CMS Open Payments shows 22 general payments to Dr. Treharne from 12 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 71% of the total. Varian Medical Systems, Inc. paid the most, $962.
General payments to Dr. Treharne by program year, 2016 to 2025
General payments to Dr. Treharne by kind, 2016 to 2025
$1.9Kin total
- Travel and lodging$1,36871%
- Food and beverage$57129%
Companies that paid Dr. Treharne the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Christopher Treharne graduated from Tulane University School of Medicine
Dr. Treharne graduated from Tulane University School of Medicine in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Christopher Treharne's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gregory Christopher Treharne
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gregory Christopher Treharne's NPI number?
Dr. Gregory Christopher Treharne's NPI number is 1972875763. It was assigned on February 8, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Christopher Treharne?
Dr. Gregory Christopher Treharne is a radiation oncologist in Danville, Pennsylvania. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Gregory Christopher Treharne practice?
Dr. Treharne practices at 100 North Academy Avenue, Danville, PA 17822. Dr. Treharne's primary practice is Geisinger Medical Center in Danville, Pennsylvania, part of Risant Health. Dmand AI also links Dr. Treharne to 2 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Gregory Christopher Treharne's office phone number?
The practice phone on file for Dr. Treharne is (570) 271-6211.
What is Dr. Gregory Christopher Treharne's medical license number?
Dr. Treharne holds Pennsylvania license MD462891, one of the licenses on file in 2 states.
Which states has Dr. Gregory Christopher Treharne been licensed in?
Dmand AI has state licenses on file for Dr. Treharne in Pennsylvania and Illinois.
Which hospitals is Dr. Gregory Christopher Treharne affiliated with?
Dr. Treharne practices at Geisinger Medical Center in Danville, Pennsylvania. Dr. Treharne is also affiliated with St. Luke's University Hospital - Bethlehem Campus. Dmand AI links Dr. Treharne to 2 more hospitals.
What medical group is Dr. Gregory Christopher Treharne part of?
Dr. Treharne is linked to Geisinger. Dmand AI links Dr. Treharne to 1 more medical group.
Does Dr. Gregory Christopher Treharne accept Medicare?
Yes. CMS data shows Dr. Treharne billed Medicare for 1,958 services in 2024, and Dr. Treharne accepts Medicare assignment.
How many Medicare patients does Dr. Gregory Christopher Treharne see?
CMS counts 188 Medicare patients who saw Dr. Treharne in 2024, with an average age of 75.
Show 7 more questionsShow fewer questions
What services does Dr. Gregory Christopher Treharne bill to Medicare?
In 2024, Dr. Treharne's most billed Medicare services were radiation oncology (77014), radiation oncology (77300) and radiation oncology (77427).
Where did Dr. Gregory Christopher Treharne go to medical school?
Dr. Treharne graduated from Tulane University School of Medicine in 2010.
What drugs does Dr. Gregory Christopher Treharne prescribe most?
In 2023 Medicare Part D data, Dr. Treharne's most prescribed drugs by claims were Silver Sulfadiazine and Oxycodone-Acetaminophen.
Has Dr. Gregory Christopher Treharne received payments from drug or device companies?
CMS Open Payments shows $1,939 in general payments to Dr. Treharne from 12 companies from 2016 to 2025. The largest total came from Varian Medical Systems, Inc.
How long has Dr. Gregory Christopher Treharne been practicing?
Dr. Treharne graduated from medical school in 2010, 16 years ago.
Does Dr. Gregory Christopher Treharne do research?
Dmand AI links 1 publication to Dr. Treharne.
Who does Dr. Gregory Christopher Treharne publish with?
Dr. Treharne's most frequent co-authors are Shaun Ud Din, MD (1 shared paper), Daphna Y. Gelblum, MD (1 shared paper) and Andreas Rimner, MD (1 shared paper).
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