Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Gwendolyn Joyce McGinnis, MD, MCR

Individual provider Radiation Oncology Physician · NPI 1326471194

Dr. Gwendolyn Joyce McGinnis, MD, MCR practises Radiation Oncology in Thornton, Colorado. Graduated from Oregon Health Sciences University School of Medicine in 2018, 8 years ago. Practices with Rocky Mountain Cancer Centers LLP, a 132-clinician group and accepts Medicare assignment. Licensed in Colorado and Oregon.

Years since qualifying
8
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
CO, OR
In the registry since
2013
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8820 Huron St
Thornton, CO 80260-6805
Phone: (303) 386-7658
Fax: (303) 487-9350
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence DR.0075042 (CO)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence MD214617 (OR)

Record details

NPI number1326471194
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , MCR
Sole proprietorNo
NPI enumeratedAugust 15, 2013
Last updated in NPPESAugust 5, 2025
Certification dateAugust 5, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Rocky Mountain Cancer Centers Llp — 132 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients104
Services billed 590 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $615 23 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Rocky Mountain Cancer Centers LLP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 132 clinicians in the practice; 12 are shown here.

Other providers in Thornton