Quick answers
- Does Donald F. Frei accept Medicare assignment?
- Yes. Medicare's clinician data says Donald F. Frei accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Donald F. Frei see?
- In 2024, CMS data shows 89 Original Medicare patients and 1,202 services for Donald F. Frei. This counts Original Medicare only and measures volume, not quality.
- What is Donald F. Frei's NPI number?
- 1619954450. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Donald F. Frei, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 89 |
|---|---|
| Services billed to Medicare | 1,202 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Imaging of blood vessel (75898)58 services
- Ultrasonic guidance for blood vessel access (76937)57 services
- Ct scan head or brain without contrast (70450)45 services
- Insertion of tube into intracranial artery for diagnosis or treatment with review by radiologist (36223)33 services
- Insertion of tube into brain artery for diagnosis or treatment with review by radiologist (36226)28 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Stroke or mini-stroke75%
- Arthritis53%
- Ischemic heart disease37%
- Chronic kidney disease30%
Hospitals where Donald F. Frei works
Medicare's Facility Affiliation Data lists Donald F. Frei at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- AdventHealth LittletonLittleton, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060113
- Hca-Healthone dba Swedish Medical CenterEnglewood, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060034
- Intermountain Health Lutheran HospitalWheat Ridge, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060009
Practice locations
Addresses where Donald F. Frei is enrolled with Medicare (CMS data updated October 2, 2026).
- 10800 E Geddes Ave, Suite 300Englewood, CO 80112 (303) 761‑9190
- 501 E Hampden Ave, 110 Swedish Medical CenterEnglewood, CO 80113 (303) 788‑6080
- 7700 S Broadway, Littleton HospitalLittleton, CO 80122 (303) 730‑5880
- 8200 Southpark TerLittleton, CO 80120 (720) 493‑3251
Group practices
Medicare enrollment lists Donald F. Frei as a member of these groups (CMS data updated October 2, 2026).
- Radiology Imaging Associates PC149 clinicians in the group
- Medical Imaging of Colorado Radiology Imaging Assc PC Etal PT127 clinicians in the group
Specialties
- Interventional Radiologyprimary
- Diagnostic Radiologyalso
Other interventional radiologists in Englewood
Clinicians with the same Medicare primary specialty in Englewood, CO — not a recommendation.
Other clinicians in Radiology Imaging Associates PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Cincinnati College Of Medicine |
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619954450 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians