NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1851656516 MD
Verify on CMS → Dianne De Leon, MD
Dermatology Physician in Chicago, 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 14,610 in Dermatology 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
143
Medicare Part D claims · 71 beneficiaries · Dermatology Physician avg: 729
MIPS score
94.1/100
▲ 11 pts above national avg 83.1 · Exceptional
Industry payments
$99.99
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Dianne De Leon, MD reported a CMS MIPS final score of 94.1/100 - above the 83.1 national average - and filed 143 Medicare Part D claims in 2023.
- 94.1/100
- MIPS score · +11 vs avg
- 143
- 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.
Dianne De Leon, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
94 Top 25% higher than 75% 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 Dianne De Leon, MD sits
This provider among dermatology physician peers
Across the 6,594 dermatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Dianne De Leon, MD writes more Part D claims than 8% of them and scores higher on MIPS quality than 68% - 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 dermatology physician peer from a representative sample of 60; the gold marker is Dianne De Leon, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Dianne De Leon, 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 Dianne De Leon, MD?
High performer (top quartile)Primary specialty
Dermatology Physician
Medicare Part D claims
143 80% vs specialty avg
MIPS final score
94.1/100 11 pts vs avg
Specialty distribution in Illinois
How Dermatology Physician compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Dianne De Leon, MD's 2023 MIPS final score plotted against the Dermatology Physician national average
- MIPS Final Score
- 94.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Dermatology Physician) - 94.1/100 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).
Dianne De Leon, MD appears in the CMS NPPES registry as a Dermatology Physician provider holding MD credentials at 4732 N LINCOLN AVE STE 200, Chicago, IL, 60625, with a listed phone of (312) 695-8106. NPI 1851656516 was issued on 07/09/2012.
Medicare Part D records for calendar year 2023 show 143 prescription claims written by this provider, covering 71 Medicare beneficiaries and totaling roughly $7K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.1/100 for the 2023 performance year (Quality 82.6), compared with the national average of 83.1.
Dermatology Physician is a mid-sized specialty nationwide, with 14,610 enrolled providers across 53 states and an average of 729 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 | 1851656516 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 07/09/2012 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
94.1036
Final Score
Avg: 83.1
82.5938
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Dianne De Leon, 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.
Northwestern Medical Faculty Foundation
Chicago, 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 Dianne De Leon, MD. Source: openpaymentsdata.cms.gov.
Total received
$100
Largest payer
Janssen Biotech, Inc.
Most common payment type
Education
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 Dianne De Leon, MD. To verify Dianne De Leon, 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.
143
Total Claims
$7K
Total Drug Cost
71
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 169
- Total Day Supply
- 4,073
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 1.08
- Gender Split
- 59% female / 41% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Dianne De Leon, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ketoconazole
Ketoconazole
29 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
20 claims
- Clindamycin Phosph…
Clindamycin Phosphate
17 claims
- Hydrocortisone
Hydrocortisone
15 claims
- Econazole Nitrate 11
Econazole Nitrate
11 claims
| Drug | Claims |
|---|---|
| Ketoconazole | 29 |
| Triamcinolone Acetonide | 20 |
| Clindamycin Phosphate | 17 |
| Hydrocortisone | 15 |
| Econazole Nitrate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Dianne De Leon, MD fits within the Dermatology Physician landscape nationally.
14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider
Dianne De Leon, MD's 143 claims are below the specialty average of 729.
Nearby Dermatology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as De Leon.
Dr. Kelly Abate
M.D.
New Lenox, IL
Dr. Cynthia Abban
MD/PHD
Gurnee, IL
Dr. Melissa Abrams
M.D.
Vernon Hills, IL
Dr. Beth Adams
M.D.
Chicago, IL
Dr. Sarah Adams
MD
Chicago, IL
Compare Dermatology 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 Dermatology 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 Dianne De Leon, MD's specialty? ▼
Dianne De Leon, MD specializes in Dermatology Physician and practices in Chicago, Illinois. Credentials: MD.
How much does Dianne De Leon, MD prescribe under Medicare Part D? ▼
In 2023, Dianne De Leon, MD wrote 143 Medicare Part D claims totaling $7K in drug costs for 71 beneficiaries.
What is Dianne De Leon, MD's Medicare quality score? ▼
Dianne De Leon, MD has a CMS MIPS Final Score of 94.1/100 (Quality: 82.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Dianne De Leon, MD located? ▼
Dianne De Leon, MD is located at 4732 N LINCOLN AVE STE 200, Chicago, IL, 60625. Phone: (312) 695-8106.
What is Dianne De Leon, MD's NPI number? ▼
Dianne De Leon, MD's National Provider Identifier (NPI) is 1851656516, issued on 07/09/2012.
How many Dermatology Physician providers are there in the US? ▼
There are 14,610 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does Dianne De Leon, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Dianne De Leon, MD's most frequently prescribed drugs include Ketoconazole, Triamcinolone Acetonide, Clindamycin Phosphate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dianne De Leon, MD accept Medicare? ▼
Dianne De Leon, MD appears in CMS Medicare data with 143 Part D claims and 71 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dianne De Leon, MD's credentials? ▼
Dianne De Leon, MD's NPI is 1851656516 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.