Quick answers
- Where does Charles E. Leonard see patients?
- Medicare's clinician data lists 1 practice location in Littleton, CO. Call before your visit to confirm the address.
- What is Charles E. Leonard's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Charles E. Leonard accept Medicare assignment?
- Yes. Medicare's clinician data says Charles E. Leonard accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Charles E. Leonard?
- (303) 730-4700, as listed in official Medicare / NPI Registry data.
- What is Charles E. Leonard's NPI number?
- 1811971963. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Charles E. Leonard is enrolled with Medicare (CMS data updated 2026-10-02).
- 22 W Dry Creek CircleLittleton, CO 80120 (303) 730‑4700
Group practices
Medicare enrollment lists Charles E. Leonard as a member of this group (CMS data updated 2026-10-02).
- Rocky Mountain Cancer Centers LLP132 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Colorado
Clinicians with the same Medicare primary specialty in Colorado — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Vanderbilt University School Of Medicine |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811971963 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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