NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1639246705 MD
Verify on CMS → Ndudi Oparaeche, MD
Rheumatology Physician in Englewood, 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 6,181 in Rheumatology 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
1K
Medicare Part D claims · 149 beneficiaries · Rheumatology Physician avg: 2K
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Industry payments
$3.8K
147 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ndudi Oparaeche, MD reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 1,186 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 1K
- 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.
Ndudi Oparaeche, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% 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 Ndudi Oparaeche, MD sits
This provider among rheumatology physician peers
Across the 2,181 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ndudi Oparaeche, MD writes more Part D claims than 30% of them and scores higher on MIPS quality than 94% - placing this provider in the lower-volume, high-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 rheumatology physician peer from a representative sample of 60; the gold marker is Ndudi Oparaeche, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ndudi Oparaeche, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Ndudi Oparaeche, MD?
High performer (top quartile)Primary specialty
Rheumatology Physician
Medicare Part D claims
1,186 42% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in Colorado
How Rheumatology Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
Ndudi Oparaeche, MD's 2023 MIPS final score plotted against the Rheumatology Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Rheumatology Physician) - 100/100 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).
Ndudi Oparaeche, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 9570 S KINGSTON CT STE 220, Englewood, CO, 80112, with a listed phone of (303) 515-2912. NPI 1639246705 was issued on 11/30/2006.
Medicare Part D records for calendar year 2023 show 1,186 prescription claims written by this provider, covering 149 Medicare beneficiaries and totaling roughly $673K in drug spend, with an opioid prescribing rate of 9.9%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 100), compared with the national average of 83.1.
Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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 | 1639246705 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/30/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
100
Quality
Reporting: Individual
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 Ndudi Oparaeche, MD. Source: openpaymentsdata.cms.gov.
Total received
$3.8K
Largest payer
Amgen 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.
1,186
Total Claims
$673K
Total Drug Cost
149
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,048
- Total Day Supply
- 59,701
- Generic Drug Cost
- $37K
- Opioid Claims
- 117 (9.9% rate)
Patient Demographics
- Average Patient Age
- 73.2 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 60% female / 40% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ndudi Oparaeche, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Methotrexate
Methotrexate
354 claims
- Hydroxychloroquine… 128
Hydroxychloroquine Sulfate
128 claims
- Folic Acid 80
Folic Acid
80 claims
- Prednisone 76
Prednisone
76 claims
- Tramadol Hcl 60
Tramadol Hcl
60 claims
- Leflunomide 57
Leflunomide
57 claims
- Allopurinol 48
Allopurinol
48 claims
- Methotrexate Sodium 28
Methotrexate Sodium
28 claims
| Drug | Claims |
|---|---|
| Methotrexate Methotrexate Sodium | 354 |
| Hydroxychloroquine Sulfate | 128 |
| Folic Acid | 80 |
| Prednisone | 76 |
| Tramadol Hcl | 60 |
| Leflunomide | 57 |
| Allopurinol | 48 |
| Methotrexate Sodium Methotrexate Sodium/Pf | 28 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 26 |
| Xeljanz Xr Tofacitinib Citrate | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Ndudi Oparaeche, MD fits within the Rheumatology Physician landscape nationally.
6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
Ndudi Oparaeche, MD's 1,186 claims are below the specialty average of 2,054.
Nearby Rheumatology Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Oparaeche.
Dr. Phyllis Acker
RN
Lafayette, CO
Dr. Vivianne Allsop
MD
Denver, CO
Dr. Christopher Antolini
MD
Denver, CO
Dr. Elizabeth Arena
DO, MPH
Grand Junction, CO
Dr. Michael Baker
MD
Colorado Springs, CO
Compare Rheumatology 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 Colorado medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Rheumatology 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 Ndudi Oparaeche, MD's specialty? ▼
Ndudi Oparaeche, MD specializes in Rheumatology Physician and practices in Englewood, Colorado. Credentials: MD.
How much does Ndudi Oparaeche, MD prescribe under Medicare Part D? ▼
In 2023, Ndudi Oparaeche, MD wrote 1,186 Medicare Part D claims totaling $673K in drug costs for 149 beneficiaries.
What is Ndudi Oparaeche, MD's Medicare quality score? ▼
Ndudi Oparaeche, MD has a CMS MIPS Final Score of 100/100 (Quality: 100). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ndudi Oparaeche, MD located? ▼
Ndudi Oparaeche, MD is located at 9570 S KINGSTON CT STE 220, Englewood, CO, 80112. Phone: (303) 515-2912.
What is Ndudi Oparaeche, MD's NPI number? ▼
Ndudi Oparaeche, MD's National Provider Identifier (NPI) is 1639246705, issued on 11/30/2006.
Does Ndudi Oparaeche, MD prescribe opioids? ▼
Yes, Ndudi Oparaeche, MD had 117 opioid claims in 2023 with an opioid prescribing rate of 9.9%.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Ndudi Oparaeche, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ndudi Oparaeche, MD's most frequently prescribed drugs include Methotrexate, Hydroxychloroquine Sulfate, Folic Acid. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ndudi Oparaeche, MD accept Medicare? ▼
Ndudi Oparaeche, MD appears in CMS Medicare data with 1,186 Part D claims and 149 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ndudi Oparaeche, MD's credentials? ▼
Ndudi Oparaeche, MD's NPI is 1639246705 with credentials MD. 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.