Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Mark A Chidel, MD

Individual provider Radiation Oncology Physician · NPI 1780711366

Dr. Mark A Chidel, MD practises Radiation Oncology in Denver, Colorado. Graduated from University of Michigan Medical School in 1995, 31 years ago. Practices with Colorado Permanente Medical Group PC, a 1,325-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
31
Trained at
University of Michigan Medical School
Licensed in
CO
In the registry since
2007
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

1375 E 19th Ave
Denver, CO 80218-1114
Phone: (303) 338-4545
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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 40739 (CO)

Record details

NPI number1780711366
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 28, 2007
Last updated in NPPESJune 23, 2021
Certification dateJune 23, 2021

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1995 (31 years in practice)
Group practice Colorado Permanente Medical Group Pc — 1325 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations9 on file with Medicare

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 patients35
Services billed 386 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 $901 11 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.

  • Good Samaritan Medical Center Llc Hospital · Lafayette, CO · listed as Good Samaritan Medical Center, LLC
  • Saint Joseph Hospital Hospital · Denver, CO · listed as Saint Joseph Hospital Inc
  • HCA HealthOne Presbyterian St. Lukes Hospital · Denver, CO
  • Hca-Healthone Dba Swedish Medical Center Hospital · Englewood, CO

Colleagues at Colorado Permanente Medical Group PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1325 clinicians in the practice; 12 are shown here.

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