NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1295737088 MD
Verify on CMS → Ernest Dejesus, MD
Nephrology Physician in Winfield, 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 10,806 in Nephrology 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 · 336 beneficiaries · Nephrology Physician avg: 2K
Industry payments
$852.78
35 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Ernest Dejesus, MD filed 1,945 Medicare Part D claims in 2024 as a Nephrology Physician in Winfield, Illinois.
- 2K
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥83rd
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Ernest Dejesus, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1295737088), first enumerated 08/11/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,945 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$852.78 in reported industry payments (35 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Ernest Dejesus, MD's individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1295737088 · Nephrology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1295737088
- ENUM-LEGACY 2005
- TAX-MID 11K Nephrology Physician
- RX-MID 1,945
- BOOK-THIN 463 in Illinois
- PHOTO-ENUM Quresh Khairullah, MD · 2005
Ernest Dejesus, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,945 ≥ 83rd percentile 83% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Ernest Dejesus, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 Ernest Dejesus, MD?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
1,945 29% vs specialty avg
Specialty distribution in Illinois
How Nephrology 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 Nephrology 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).
Practice Address
Provider Details
| NPI | 1295737088 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/11/2005 |
Hospital and facility affiliations
Facilities where Ernest Dejesus, 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.
Nani-Ihp LLC
Elmhurst, IL
Nephrology Associates OF Northern Illinois Ltd
Addison, 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 Ernest Dejesus, MD. Source: openpaymentsdata.cms.gov.
Total received
$853
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.
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 Ernest Dejesus, MD. To verify Ernest Dejesus, 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 2024.
1,945
Total Claims
$535K
Total Drug Cost
336
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,322.467
- Total Day Supply
- 125,491
- Generic Drug Cost
- $56K
- Opioid Claims
- 27 (1.4% rate)
- Antibiotic Claims
- 62
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 3.63
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 42, 65-74: 132, 75-84: 131, 85+: 31
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Ernest Dejesus, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amlodipine Besylate
Amlodipine Besylate
154 claims
- Olmesartan Medoxomil
Olmesartan Medoxomil
104 claims
- Prednisone
Prednisone
98 claims
- Bumetanide
Bumetanide
97 claims
- Furosemide
Furosemide
90 claims
- Chlorthalidone
Chlorthalidone
78 claims
- Carvedilol
Carvedilol
76 claims
- Lisinopril 61
Lisinopril
61 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 154 |
| Olmesartan Medoxomil | 104 |
| Prednisone | 98 |
| Bumetanide | 97 |
| Furosemide | 90 |
| Chlorthalidone | 78 |
| Carvedilol | 76 |
| Lisinopril | 61 |
| Calcitriol | 50 |
| Farxiga Dapagliflozin Propanediol | 49 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Ernest Dejesus, MD fits within the Nephrology Physician landscape nationally.
10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider
Ernest Dejesus, MD's 1,945 claims are above the specialty average of 1,511.
Nationwide Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Dejesus, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nephrology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Dejesus.
One of 463 Nephrology Physician providers enrolled in Illinois, 5 are shown here.
Dr. Momen Abbasi
M.D.
Chicago, IL
Dr. Pabitra Adhikari
MD
Chicago, IL
Dr. Bhavani Adusumilli
MD
Springfield, IL
Dr. Nidhi Aggarwal
M.D.
Chicago, IL
Dr. Vikram Aggarwal
M.D
Chicago, IL
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Ernest Dejesus, MD's specialty? ▼
Ernest Dejesus, MD specializes in Nephrology Physician and practices in Winfield, Illinois. Credentials: MD.
How much does Ernest Dejesus, MD prescribe under Medicare Part D? ▼
In 2024, Ernest Dejesus, MD wrote 1,945 Medicare Part D claims totaling $535K in drug costs for 336 beneficiaries.
Where is Ernest Dejesus, MD located? ▼
Ernest Dejesus, MD is located at 25 WINFIELD ROAD, Winfield, IL, 60190. Phone: (630) 690-1220.
What is Ernest Dejesus, MD's NPI number? ▼
Ernest Dejesus, MD's National Provider Identifier (NPI) is 1295737088, issued on 08/11/2005.
Does Ernest Dejesus, MD prescribe opioids? ▼
Yes, Ernest Dejesus, MD had 27 opioid claims in 2024 with an opioid prescribing rate of 1.4%.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does Ernest Dejesus, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Ernest Dejesus, MD's most frequently prescribed drugs include Amlodipine Besylate, Olmesartan Medoxomil, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ernest Dejesus, MD accept Medicare? ▼
Ernest Dejesus, MD appears in CMS Medicare data with 1,945 Part D claims and 336 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ernest Dejesus, MD's credentials? ▼
Ernest Dejesus, MD's NPI is 1295737088 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.