Gwendolyn Joyce McGinnis, MD, MCR
Radiation Oncology Physician · Thornton, CO
Gwendolyn Joyce McGinnis, MD, MCR is a radiation oncology physician with a practice address in Thornton, Colorado, and NPI 1326471194, issued on Aug 15, 2013. Check the license (Colorado DR.0075042, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gwendolyn Joyce McGinnis
- Credential
- MD, MCR
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- DR.0075042 CO
MD214617 OR
Self-reported in NPPES; status is on the state search - Practice location
- 8820 Huron St, Thornton, CO 80260
- Phone
- (303) 386-7658
- Enumerated
- Aug 15, 2013
- Record last updated
- Aug 5, 2025
- Fax
- (303) 487-9350
- Medicaid ID
- 500822996 OR
- Medicare enrollment
- Enrolled (PECOS I20230724001388); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 111 in Colorado → Look up another NPI →
Also registered at 8820 Huron St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erin BorchardtGenetic Counselor (M.S.)1104230812
- Eiko Browning, MDHematology & Oncology Physician1215083811
- Daniel Chin, MDRadiation Oncology Physician1356325096
- Karla Garcia-VelezClinical Social Worker1922583020
- Ilona Gomez, FNPFamily Nurse Practitioner1093441677
- Joshua Gruhl, MDRadiation Oncology Physician1982068086
Verify Gwendolyn Joyce McGinnis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0075042Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average radiation oncology physician in 2024
110 Medicare Part D claims for 46 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Tamsulosin Hcl18 claims
- Fluconazole14 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.
Industry payments in 2024: $120.00
1 payment: food and beverage; the largest payer was Elekta, 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 2 group practices
- Rocky Mountain Cancer Centers LLPThornton, CO
- The Oregon Clinic, PCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gwendolyn Joyce McGinnis among 111 radiation oncology physician records in Colorado
Gwendolyn Joyce McGinnis, MD, MCR is one of 111 radiation oncology physician records with a practice address in Colorado. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 77% of them.
- NPI issued2013 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2018 · median 2007 among the 88 with a school on file
- Record last updated2025 · 50% 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 Colorado 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 Colorado
There are 111 radiation oncology physician records in Colorado.
All 111 in Colorado → Every provider in Thornton → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Daniel Chin, MDThornton, CO 802601356325096
- Joshua Gruhl, MDThornton, CO 802601982068086
- Kevin Schewe, M.D.Thornton, CO 802601902883952
- Elaine Weng, MDDenver, CO 802621790892537
- Jeffrey Albert, M.D.Lakewood, CO 802281003166109
- Elizabeth Ceilley, M.D.Lakewood, CO 802281629016100
- Vishal Dhere, M.D.Lakewood, CO 802281568995223
- Ralph Wright, MDLakewood, CO 802281932193034
Common questions
What is Gwendolyn Joyce McGinnis, MD, MCR's NPI number?
Gwendolyn Joyce McGinnis, MD, MCR's National Provider Identifier (NPI) is 1326471194, issued on Aug 15, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gwendolyn Joyce McGinnis, MD, MCR located?
The NPPES record lists a practice address at 8820 Huron St, Thornton, CO, 80260. Phone: (303) 386-7658. Providers update this record themselves, so call before visiting.
How can I verify Gwendolyn Joyce McGinnis, MD, MCR's license?
NPPES lists Colorado license number DR.0075042, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gwendolyn Joyce McGinnis, MD, MCR prescribe under Medicare Part D?
In 2024, Gwendolyn Joyce McGinnis, MD, MCR had 110 Medicare Part D claims for 46 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.