Dr. Mark A. Chidel, MD
Radiation Oncology (Radiation Oncology Physician)
- Medicare participating
At a glance
- Medical school
- University of Michigan Medical School (1995)
- Years since graduation
- 31
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 35
Licensed in Colorado since 2002, according to the Colorado Department of Regulatory Agencies. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1995Medical school: University of Michigan Medical School
- 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Radiation Oncology Physician primary
CO license 40739 (first issued 2002; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Hca-Healthone DBA Swedish Medical Center Englewood, CO
- Saint Joseph Hospital Denver, CO
- Good Samaritan Medical Center LLC Lafayette, CO
- HCA Healthone Presbyterian St. Lukes Denver, CO
Medical groups
- Colorado Permanente Medical Group PC (1,327 clinicians)
- Intermountain Medical Group Denver LLC (568 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 35
- Services billed
- 386
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Calculation of radiation therapy dose | 41 | 16 |
| Design and construction of complex radiation treatment device | 37 | 14 |
| Radiation treatment management, 5 treatment sessions | 37 | 18 |
| Established patient office or other outpatient visit, 20-29 minutes | 16 | 13 |
| Complex radiation therapy planning | 16 | 16 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Tamsulosin Hcl Other prescribers in Denver, CO | 21 |
| Memantine Hcl Other prescribers in Denver, CO | 14 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 3 companies reported 11 payments worth $901 in total to this clinician.
| Gt Medical Technologies, Inc | $860 |
|---|---|
| Siemens Medical Solutions USA, Inc. | $23.02 |
| Novocure Inc. | $17.67 |
| Food and Beverage | $901 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.