NPI registry status
Active
2026 NPPES data Medical Oncology Physician NPI 1720056823 M.D.
Verify on CMS → Robert Ellis, M.D.
Medical Oncology Physician in Springfield, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,815 in Medical 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
3K
Medicare Part D claims · 379 beneficiaries · Medical Oncology Physician avg: 689
MIPS score
75/100
▼ 8 pts below national avg 83.1 · Above neutral
Industry payments
$409.96
13 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Robert Ellis, M.D. reported a CMS MIPS final score of 75/100 - below the 83.1 national average - and filed 2,582 Medicare Part D claims in 2023.
- 75/100
- MIPS score · -8 vs avg
- 3K
- Part D claims, 2023
- 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.
Robert Ellis, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
75 15th percentile higher than 15% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Robert Ellis, M.D. sits
This provider among medical oncology physician peers
Across the 1,527 medical oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Robert Ellis, M.D. writes more Part D claims than 97% of them and scores higher on MIPS quality than 11% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one medical oncology physician peer from a representative sample of 60; the gold marker is Robert Ellis, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Robert Ellis, 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 Robert Ellis, M.D.?
Below national averagePrimary specialty
Medical Oncology Physician
Medicare Part D claims
2,582 275% vs specialty avg
MIPS final score
75/100 8.1 pts vs avg
Specialty distribution in Missouri
How Medical Oncology Physician compares to other specialties among Missouri providers
Medicare quality performance, MIPS
Robert Ellis, M.D.'s 2023 MIPS final score plotted against the Medical Oncology Physician national average
- MIPS Final Score
- 75/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Medical Oncology Physician) - 75/100 vs national avg 83.1
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).
Robert Ellis, M.D. appears in the CMS NPPES registry as a Medical Oncology Physician provider holding M.D. credentials at 3850 S NATIONAL AVE, Springfield, MO, 65807, with a listed phone of (417) 882-4880. NPI 1720056823 was issued on 03/14/2006.
Medicare Part D records for calendar year 2023 show 2,582 prescription claims written by this provider, covering 379 Medicare beneficiaries and totaling roughly $5.6 million in drug spend, with an opioid prescribing rate of 12.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.
Medical Oncology Physician is a narrow specialty nationwide, with 3,815 enrolled providers across 53 states and an average of 689 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1720056823 |
|---|---|
| Specialty | Medical Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/14/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
Avg: 83.1
Reporting: Individual
Hospital and facility affiliations
Facilities where Robert Ellis, 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.
American Oncology Partners PA
Monett, MO
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 Robert Ellis, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$410
Largest payer
Gilead Sciences, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,582
Total Claims
$5.6M
Total Drug Cost
379
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,373
- Total Day Supply
- 89,648
- Generic Drug Cost
- $372K
- Opioid Claims
- 330 (12.8% rate)
- Antibiotic Claims
- 60
Patient Demographics
- Average Patient Age
- 73.3 years
- Avg HCC Risk Score
- 2.38
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 36, 65-74: 184, 75-84: 122, 85+: 37
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Robert Ellis, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
162 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
115 claims
- Letrozole
Letrozole
111 claims
- Acyclovir
Acyclovir
105 claims
- Eliquis
Eliquis
99 claims
- Ondansetron Hcl
Ondansetron Hcl
91 claims
- Gabapentin
Gabapentin
79 claims
- Alprazolam
Alprazolam
72 claims
| Drug | Claims |
|---|---|
| Anastrozole | 162 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 115 |
| Letrozole | 111 |
| Acyclovir | 105 |
| Eliquis Apixaban | 99 |
| Ondansetron Hcl | 91 |
| Gabapentin | 79 |
| Alprazolam | 72 |
| Hydroxyurea | 67 |
| Morphine Sulfate Er Morphine Sulfate | 65 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Oncology Physician Overview
How Robert Ellis, M.D. fits within the Medical Oncology Physician landscape nationally.
3,815
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
689
Avg Claims per Provider
Robert Ellis, M.D.'s 2,582 claims are above the specialty average of 689.
Nearby Medical Oncology Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Ellis.
Dr. Elliot Abbey
MD
Chesterfield, MO
Dr. Camille Abboud
MD
Saint Louis, MO
Dr. Rony Abou-Jawde
MD
St Joseph, MO
Dr. Foluso Ademuyiwa
MD
Saint Louis, MO
Dr. Douglas Adkins
MD
Saint Louis, MO
Compare Medical Oncology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Robert Ellis, M.D.'s specialty? ▼
Robert Ellis, M.D. specializes in Medical Oncology Physician and practices in Springfield, Missouri. Credentials: M.D..
How much does Robert Ellis, M.D. prescribe under Medicare Part D? ▼
In 2023, Robert Ellis, M.D. wrote 2,582 Medicare Part D claims totaling $5.6M in drug costs for 379 beneficiaries.
What is Robert Ellis, M.D.'s Medicare quality score? ▼
Robert Ellis, M.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Robert Ellis, M.D. located? ▼
Robert Ellis, M.D. is located at 3850 S NATIONAL AVE, Springfield, MO, 65807. Phone: (417) 882-4880.
What is Robert Ellis, M.D.'s NPI number? ▼
Robert Ellis, M.D.'s National Provider Identifier (NPI) is 1720056823, issued on 03/14/2006.
Does Robert Ellis, M.D. prescribe opioids? ▼
Yes, Robert Ellis, M.D. had 330 opioid claims in 2023 with an opioid prescribing rate of 12.8%.
How many Medical Oncology Physician providers are there in the US? ▼
There are 3,815 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 689 Medicare Part D claims per year.
What drugs does Robert Ellis, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Robert Ellis, M.D.'s most frequently prescribed drugs include Anastrozole, Hydrocodone-Acetaminophen, Letrozole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Ellis, M.D. accept Medicare? ▼
Robert Ellis, M.D. appears in CMS Medicare data with 2,582 Part D claims and 379 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Ellis, M.D.'s credentials? ▼
Robert Ellis, M.D.'s NPI is 1720056823 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
Compiled from official public sources by the PlainDoctor editorial team.
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.