NPI registry status
Active
2026 NPPES data Pain Medicine Physician NPI 1790985349 MD
Verify on CMS → Kun Peng, MD
Pain Medicine Physician in Naperville, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 951 in Pain Medicine 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
353
Medicare Part D claims · 192 beneficiaries · Pain Medicine Physician avg: 2K
MIPS score
91.4/100
▲ 8 pts above national avg 83.1 · Exceptional
Industry payments
$463.19
9 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Kun Peng, MD reported a CMS MIPS final score of 91.4/100 - above the 83.1 national average - and filed 353 Medicare Part D claims in 2023.
- 91.4/100
- MIPS score · +8 vs avg
- 353
- 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.
Kun Peng, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
91 Top 37% higher than 63% 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 Kun Peng, MD sits
This provider among pain medicine physician peers
Across the 286 pain medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Kun Peng, MD writes more Part D claims than 21% of them and scores higher on MIPS quality than 83% - 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 pain medicine physician peer from a representative sample of 60; the gold marker is Kun Peng, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Kun Peng, MD 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 Kun Peng, MD?
High performer (top quartile)Primary specialty
Pain Medicine Physician
Medicare Part D claims
353 83% vs specialty avg
MIPS final score
91.4/100 8.3 pts vs avg
Specialty distribution in Illinois
How Pain Medicine Physician compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Kun Peng, MD's 2023 MIPS final score plotted against the Pain Medicine Physician national average
- MIPS Final Score
- 91.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Pain Medicine Physician) - 91.4/100 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).
Kun Peng, MD appears in the CMS NPPES registry as a Pain Medicine Physician provider holding MD credentials at 120 SPALDING DR STE 308, Naperville, IL, 60540, with a listed phone of (630) 527-7730. NPI 1790985349 was issued on 07/23/2007.
Medicare Part D records for calendar year 2023 show 353 prescription claims written by this provider, covering 192 Medicare beneficiaries and totaling roughly $6K in drug spend, with an opioid prescribing rate of 36.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.4/100 for the 2023 performance year (Quality 82.7), compared with the national average of 83.1.
Pain Medicine Physician is a narrow specialty nationwide, with 951 enrolled providers across 49 states and an average of 2,078 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 | 1790985349 |
|---|---|
| Specialty | Pain Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/23/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.3557
Final Score
Avg: 83.1
82.7114
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Kun Peng, MD 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.
Endeavor Health Medical Group
Naperville, IL
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 Kun Peng, MD. Source: openpaymentsdata.cms.gov.
Total received
$463
Largest payer
Nevro Corp.
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.
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Kun Peng, MD. To verify Kun Peng, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
353
Total Claims
$6K
Total Drug Cost
192
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 382
- Total Day Supply
- 8,101
- Brand Drug Cost
- $0
- Generic Drug Cost
- $6K
- Opioid Claims
- 130 (36.8% rate)
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 1.56
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 30, 65-74: 93, 75-84: 53, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kun Peng, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
67 claims
- Gabapentin
Gabapentin
38 claims
- Methylprednisolone
Methylprednisolone
30 claims
- Meloxicam 25
Meloxicam
25 claims
- Tramadol Hcl 25
Tramadol Hcl
25 claims
- Pregabalin 23
Pregabalin
23 claims
- Tizanidine Hcl 20
Tizanidine Hcl
20 claims
- Oxycodone-Acetamin… 14
Oxycodone-Acetaminophen
14 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 67 |
| Gabapentin | 38 |
| Methylprednisolone | 30 |
| Meloxicam | 25 |
| Tramadol Hcl | 25 |
| Pregabalin | 23 |
| Tizanidine Hcl | 20 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 14 |
| Methocarbamol | 13 |
| Diclofenac Sodium | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pain Medicine Physician Overview
How Kun Peng, MD fits within the Pain Medicine Physician landscape nationally.
951
Pain Medicine Physician Providers in US
49
States with Pain Medicine Physician
2,078
Avg Claims per Provider
Kun Peng, MD's 353 claims are below the specialty average of 2,078.
Nearby Pain Medicine Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Peng.
Dr. Suzanne Alt
DO
Mount Vernon, IL
Dr. Brian Barnett
M.D.
Aurora, IL
Dr. Naheed Bashir
M.D.
Belleville, IL
Dr. Andrew Belavic
M.D
Elmhurst, IL
Dr. Wynndel Buenger
MD
Alton, IL
Compare Pain Medicine 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pain Medicine 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.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Kun Peng, MD's specialty? ▼
Kun Peng, MD specializes in Pain Medicine Physician and practices in Naperville, Illinois. Credentials: MD.
How much does Kun Peng, MD prescribe under Medicare Part D? ▼
In 2023, Kun Peng, MD wrote 353 Medicare Part D claims totaling $6K in drug costs for 192 beneficiaries.
What is Kun Peng, MD's Medicare quality score? ▼
Kun Peng, MD has a CMS MIPS Final Score of 91.4/100 (Quality: 82.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Kun Peng, MD located? ▼
Kun Peng, MD is located at 120 SPALDING DR STE 308, Naperville, IL, 60540. Phone: (630) 527-7730.
What is Kun Peng, MD's NPI number? ▼
Kun Peng, MD's National Provider Identifier (NPI) is 1790985349, issued on 07/23/2007.
Does Kun Peng, MD prescribe opioids? ▼
Yes, Kun Peng, MD had 130 opioid claims in 2023 with an opioid prescribing rate of 36.8%.
How many Pain Medicine Physician providers are there in the US? ▼
There are 951 Pain Medicine Physician providers across 49 states in the US. The average Pain Medicine Physician provider writes 2,078 Medicare Part D claims per year.
What drugs does Kun Peng, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Kun Peng, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Methylprednisolone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kun Peng, MD accept Medicare? ▼
Kun Peng, MD appears in CMS Medicare data with 353 Part D claims and 192 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kun Peng, MD's credentials? ▼
Kun Peng, MD's NPI is 1790985349 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.