NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1871527754 M.D.
Verify on CMS → Charles Simpson, M.D.
Radiation Oncology Physician in Lafayette, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,029 in Radiation Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
254
Medicare Part D claims · 94 beneficiaries · Radiation Oncology Physician avg: 186
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
78.8/100
▼ 5 pts below national avg 83.5 · Above neutral
Industry payments
$71.89
4 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Charles Simpson, M.D. reported a CMS MIPS final score of 78.8/100 - below the 83.5 national average - and filed 254 Medicare Part D claims in 2023.
- 78.8/100
- MIPS score · -5 vs avg
- 254
- Part D claims, 2023
- 93%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
CMS NPPES provider registry desk
NPI 1871527754 · Radiation Oncology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-BELOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1871527754
- ENUM-LEGACY 2006
- TAX-MID 6K Radiation Oncology
- MIPS-BELOW 78.8/100
- RX-LIGHT 254
- BOOK-THIN 102 in Colorado
- PHOTO-FINISH William Barrett · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Simpson · this p…
Simpson · this provider
78.8 MIPS pts
- Randall Duckert …
Randall Duckert
78.8 MIPS pts
- Jeffrey Wu · near
Jeffrey Wu
78.8 MIPS pts
- David Lee · high…
David Lee
78.9 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Charles Simpson, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
79 ≥ 23rd percentile 23% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Charles Simpson, M.D. sits
This provider among radiation oncology physician peers
Across the 1,834 radiation oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Charles Simpson, M.D. writes more Part D claims than 86% of them and scores higher on MIPS quality than 22% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one radiation oncology physician peer from a representative sample of 60; the gold marker is Charles Simpson, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Charles Simpson, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Charles Simpson, M.D.?
Near national averagePrimary specialty
Radiation Oncology Physician
Medicare Part D claims
254 37% vs specialty avg
MIPS final score
78.8/100 4.7 pts vs avg
Specialty distribution in Colorado
How Radiation Oncology Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
Charles Simpson, M.D.'s 2023 MIPS final score plotted against the Radiation Oncology Physician national average
- MIPS Final Score
- 78.8/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1871527754 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/10/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
78.8343
Final Score
Measured-score avg: 83.5
69.5205
Quality
59.927
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Charles Simpson, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
The Mary Lanning Memorial Hospital Association
Grand Island, NE
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Charles Simpson, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$72
Largest payer
Daiichi Sankyo Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Charles Simpson, M.D. - brand share 7.0%
Radiation Oncology Physician average
7% brand-name claims vs 93% generic, on 254 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
254
Total Claims
$41K
Total Drug Cost
94
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 407
- Total Day Supply
- 11,229
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $36K
- Generic Drug Cost
- $6K
Patient Demographics
- Average Patient Age
- 74.0 years
- Avg HCC Risk Score
- 1.27
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Charles Simpson, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tamsulosin Hcl
Tamsulosin Hcl
185 claims
- Orgovyx 13
Orgovyx
13 claims
- Dexamethasone 12
Dexamethasone
12 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 185 |
| Orgovyx Relugolix | 13 |
| Dexamethasone | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Radiation Oncology Physician Overview
How Charles Simpson, M.D. fits within the Radiation Oncology Physician landscape nationally.
6,029
Radiation Oncology Physician Providers in US
53
States with Radiation Oncology Physician
186
Avg Claims per Provider
Charles Simpson, M.D.'s 254 claims are above the specialty average of 186.
Nationwide Radiation Oncology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Simpson, both outside Colorado so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (78.8 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Radiation Oncology Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Simpson.
One of 102 Radiation Oncology Physician providers enrolled in Colorado, 5 are shown here.
Dr. Mohit Agarwal
MD
Sterling, CO
Dr. Jeffrey Albert
M.D.
Lakewood, CO
Eric Anderson
Loveland, CO
Dr. Andrew Antell
MD
Boulder, CO
Dr. Jack Bagley
M.D.
Grand Junction, CO
Compare Radiation Oncology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Charles Simpson, M.D.'s specialty? ▼
Charles Simpson, M.D. specializes in Radiation Oncology Physician and practices in Lafayette, Colorado. Credentials: M.D..
How much does Charles Simpson, M.D. prescribe under Medicare Part D? ▼
In 2023, Charles Simpson, M.D. wrote 254 Medicare Part D claims totaling $41K in drug costs for 94 beneficiaries.
What is Charles Simpson, M.D.'s Medicare quality score? ▼
Charles Simpson, M.D. has a CMS MIPS Final Score of 78.8/100 (Quality: 69.5, Cost: 59.9). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Charles Simpson, M.D. located? ▼
Charles Simpson, M.D. is located at 120 OLD LARAMIE TRL E, Lafayette, CO, 80026. Phone: (303) 926-9800.
What is Charles Simpson, M.D.'s NPI number? ▼
Charles Simpson, M.D.'s National Provider Identifier (NPI) is 1871527754, issued on 07/10/2006.
Does Charles Simpson, M.D. prescribe more brand-name or generic drugs? ▼
Charles Simpson, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $36K in brand drug costs.
How many Radiation Oncology Physician providers are there in the US? ▼
There are 6,029 Radiation Oncology Physician providers across 53 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
What drugs does Charles Simpson, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Charles Simpson, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl, Orgovyx, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Charles Simpson, M.D. accept Medicare? ▼
Charles Simpson, M.D. appears in CMS Medicare data with 254 Part D claims and 94 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Charles Simpson, M.D.'s credentials? ▼
Charles Simpson, M.D.'s NPI is 1871527754 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.