Charles Leonard, MD
NPI 1811971963 · Radiation Oncology Physician · Littleton, CO
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Leonard, MD is a Radiation Oncology Physician provider in Littleton, CO (NPI 1811971963).
Provider details
- NPI number
- 1811971963
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- DR.0030114 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,239 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Intensity Modulated Treatment Delivery, Single Or Multiple Fields/Arcs,via Narrow Spatially and Temporally Modulated Beams, Binary, Dynamic Mlc, Per Treatment SessionG6015 | 348 | $367 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 303 | $122 |
| Continuing Radiation Therapy Consultation Per Week77336 | 158 | $91 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 153 | $189 |
| Calculation of Radiation Therapy Dose77300 | 147 | $66 |
| Piflufolastat F-18, Diagnostic, 1 MillicurieA9595 | 144 | $571 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$409 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-02
- Last updated
- 2025-02-19
- Certified
- 2025-02-19
Frequently asked questions
- What is Charles Leonard's NPI number?
- Charles Leonard's National Provider Identifier (NPI) is 1811971963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Leonard's specialty?
- Charles Leonard is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Leonard located?
- Charles Leonard's practice location on file with NPPES is 22 W Dry Creek Cir, Littleton, CO 80120-4413.
- What is Charles Leonard's phone number?
- The practice phone number listed in the NPPES registry for Charles Leonard is (303) 730-4700.
- Does Charles Leonard accept Medicare?
- Charles Leonard is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Leonard's NPI active?
- Yes — Charles Leonard's NPI (1811971963) is active in the NPPES registry as of the last update on 2025-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.