DR. CHARLES KELLEY SIMPSON (M.D.) – Radiation Oncology Physician, NPI 1871527754
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
131 RADIATION ONCOLOGY in CO
Provider Addresses for DR. CHARLES KELLEY SIMPSON (M.D.)
7720 S Broadway Ste 500
Littleton, CO 801222635
Phone: (303) 926-9800
Fax: (303) 926-9801
Type: Location
10463 Park Meadows Dr Ste 114
Lone Tree, CO 801245317
Phone: (303) 733-8848
Type: Location
Old Laramie Trail, Lafayette, Boulder County, Colorado, 80026, United States
LAFAYETTE, CO 800267012
Phone: (303) 926-9800
Fax: (303) 926-9801
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $184.
Total Amount is formed as General ($184) + Research ($0) + Ownership ($0) = $184.
Last reported payment date: 2024-09-19 • Largest payer in this snapshot: Progenics Pharmaceuticals, Inc. ($112).
Total Amount
$184
General + Research + Ownership
Payments
5
Total payment records
General Amount
$184
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-19
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2023-10-19
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20231019000366 | I | Radiation Oncology | NE | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 77300 | Calculation of radiation therapy dose | 758 | 88 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 287 | 84 | $0 |
| 77014 | Ct guidance for insertion of radiation therapy fields | 164 | 12 | $0 |
| 77263 | Complex radiation therapy planning | 100 | 99 | $0 |
| 77301 | High precision radiation therapy planning | 83 | 83 | $0 |
Insurance plans in this area (ZIP 80122)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | FL | |
| - | NE | |
| Emergency Medicine | OH | |
| Physician Assistant | NE | |
| Cardiovascular Disease (Cardiology) | NE | |
| Physician Assistant | NE | |
| - | TN | |
| Orthopedic Surgery | NE | |
| Family Practice | NE | |
| - | CO |
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