NPI registry status
Active
2026 NPPES data Urology Physician NPI 1194773465 MD
Verify on CMS → Paul Lyon, MD
Urology 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 13,367 in Urology 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
2K
Medicare Part D claims · 552 beneficiaries · Urology Physician avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.2K
36 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
Paul Lyon, MD filed 2,019 Medicare Part D claims in 2023 as a Urology Physician in Naperville, Illinois, prescribing 92% generic.
- 2K
- Part D claims, 2023
- 92%
- 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.
Paul Lyon, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,019 Top 16% higher than 84% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Paul Lyon, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Paul Lyon, MD?
Quality data not reportedPrimary specialty
Urology Physician
Medicare Part D claims
2,019 58% vs specialty avg
Specialty distribution in Illinois
How Urology Physician compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Urology Physician. Verify directly:
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).
Paul Lyon, MD appears in the CMS NPPES registry as a Urology Physician provider holding MD credentials at 1259 RICKERT DR, Naperville, IL, 60540, with a listed phone of (630) 790-1221. NPI 1194773465 was issued on 05/05/2006.
Medicare Part D records for calendar year 2023 show 2,019 prescription claims written by this provider, covering 552 Medicare beneficiaries and totaling roughly $299K in drug spend, split 8% brand-name and 92% generic by claim count.
Urology Physician is a mid-sized specialty nationwide, with 13,367 enrolled providers across 54 states and an average of 1,280 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 | 1194773465 |
|---|---|
| Specialty | Urology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/05/2006 |
Hospital and facility affiliations
Facilities where Paul Lyon, 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.
Dupage Medical Group Ltd
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 Paul Lyon, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.2K
Largest payer
PROCEPT BioRobotics Corporation
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 Paul Lyon, MD. To verify Paul Lyon, 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.
Brand vs generic prescribing mix · Generic-heavy
Paul Lyon, MD - brand share 8.0%
Urology Physician average
8% brand-name claims vs 92% generic, on 2,019 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.
2,019
Total Claims
$299K
Total Drug Cost
552
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,560
- Total Day Supply
- 127,774
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $250K
- Generic Drug Cost
- $49K
- Antibiotic Claims
- 359
Patient Demographics
- Average Patient Age
- 76.6 years
- Avg HCC Risk Score
- 1.38
- Gender Split
- 14% female / 86% male
- Age Distribution
- <65: 17, 65-74: 207, 75-84: 241, 85+: 87
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Paul Lyon, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Finasteride
Finasteride
666 claims
- Tamsulosin Hcl
Tamsulosin Hcl
465 claims
- Sulfamethoxazole-T… 112
Sulfamethoxazole-Trimethoprim
112 claims
- Myrbetriq 103
Myrbetriq
103 claims
- Cephalexin 93
Cephalexin
93 claims
- Methenamine Hippur… 59
Methenamine Hippurate
59 claims
- Dutasteride 53
Dutasteride
53 claims
- Alfuzosin Hcl Er 42
Alfuzosin Hcl Er
42 claims
| Drug | Claims |
|---|---|
| Finasteride | 666 |
| Tamsulosin Hcl | 465 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 112 |
| Myrbetriq Mirabegron | 103 |
| Cephalexin | 93 |
| Methenamine Hippurate | 59 |
| Dutasteride | 53 |
| Alfuzosin Hcl Er Alfuzosin Hcl | 42 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 42 |
| Sildenafil Citrate | 34 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Urology Physician Overview
How Paul Lyon, MD fits within the Urology Physician landscape nationally.
13,367
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider
Paul Lyon, MD's 2,019 claims are above the specialty average of 1,280.
Nearby Urology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Lyon.
Dr. Michael Abern
M.D.
Chicago, IL
Dr. Omer Acar
MD
Chicago, IL
Dr. Melanie Adamsky
M.D.
Melrose Park, IL
Piyush Agarwal
Chicago, IL
Dr. Arif Agha
MD
Oak Brook, IL
Compare Urology 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 Urology 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Illinois
Frequently Asked Questions
What is Paul Lyon, MD's specialty? ▼
Paul Lyon, MD specializes in Urology Physician and practices in Naperville, Illinois. Credentials: MD.
How much does Paul Lyon, MD prescribe under Medicare Part D? ▼
In 2023, Paul Lyon, MD wrote 2,019 Medicare Part D claims totaling $299K in drug costs for 552 beneficiaries.
Where is Paul Lyon, MD located? ▼
Paul Lyon, MD is located at 1259 RICKERT DR, Naperville, IL, 60540. Phone: (630) 790-1221.
What is Paul Lyon, MD's NPI number? ▼
Paul Lyon, MD's National Provider Identifier (NPI) is 1194773465, issued on 05/05/2006.
Does Paul Lyon, MD prescribe more brand-name or generic drugs? ▼
Paul Lyon, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $250K in brand drug costs.
How many Urology Physician providers are there in the US? ▼
There are 13,367 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does Paul Lyon, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Paul Lyon, MD's most frequently prescribed drugs include Finasteride, Tamsulosin Hcl, Sulfamethoxazole-Trimethoprim. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Paul Lyon, MD accept Medicare? ▼
Paul Lyon, MD appears in CMS Medicare data with 2,019 Part D claims and 552 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Paul Lyon, MD's credentials? ▼
Paul Lyon, MD's NPI is 1194773465 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.
- 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.