NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1811991383 M.D.
Verify on CMS → Rodrigo Ubilluz, M.D.
Neurology Physician in Downers Grove, 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 19,885 in Neurology 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 · 231 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
91%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.3K
61 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
Rodrigo Ubilluz, M.D. filed 2,084 Medicare Part D claims in 2023 as a Neurology Physician in Downers Grove, Illinois, prescribing 91% generic.
- 2K
- Part D claims, 2023
- 91%
- generic prescribing
- $1.3K
- industry payments (Sunshine Act)
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.
Rodrigo Ubilluz, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,084 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-eligible specialty (heuristic, not verified)
Rodrigo Ubilluz, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Rodrigo Ubilluz, M.D.?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
2,084 59% vs specialty avg
Specialty distribution in Illinois
How Neurology 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 Neurology 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).
Rodrigo Ubilluz, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 4121 FAIRVIEW AVE, Downers Grove, IL, 60515, with a listed phone of (630) 964-7136. NPI 1811991383 was issued on 06/12/2005.
Medicare Part D records for calendar year 2023 show 2,084 prescription claims written by this provider, covering 231 Medicare beneficiaries and totaling roughly $611K in drug spend, split 8% brand-name and 91% generic by claim count, with an opioid prescribing rate of 4.2%.
Neurology Physician is a mid-sized specialty nationwide, with 19,885 enrolled providers across 54 states and an average of 1,309 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 | 1811991383 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/12/2005 |
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 Rodrigo Ubilluz, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.3K
Largest payer
Teva Pharmaceuticals USA, 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 Rodrigo Ubilluz, M.D.. To verify Rodrigo Ubilluz, M.D.'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
Rodrigo Ubilluz, M.D. - brand share 8.0%
Neurology Physician average
8% brand-name claims vs 91% generic, on 2,084 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.
2,084
Total Claims
$611K
Total Drug Cost
231
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,264
- Total Day Supply
- 93,781
- Brand vs Generic
- 8% brand / 91% generic
- Brand Drug Cost
- $543K
- Generic Drug Cost
- $67K
- Opioid Claims
- 87 (4.2% rate)
Patient Demographics
- Average Patient Age
- 71.4 years
- Avg HCC Risk Score
- 1.46
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 46, 65-74: 91, 75-84: 67, 85+: 27
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Rodrigo Ubilluz, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
261 claims
- Clonazepam
Clonazepam
125 claims
- Levetiracetam
Levetiracetam
113 claims
- Memantine Hcl 99
Memantine Hcl
99 claims
- Nortriptyline Hcl 84
Nortriptyline Hcl
84 claims
- Primidone 83
Primidone
83 claims
- Butalbital-Acetami… 78
Butalbital-Acetaminophen-Caffe
78 claims
- Donepezil Hcl 71
Donepezil Hcl
71 claims
| Drug | Claims |
|---|---|
| Gabapentin | 261 |
| Clonazepam | 125 |
| Levetiracetam | 113 |
| Memantine Hcl | 99 |
| Nortriptyline Hcl | 84 |
| Primidone | 83 |
| Butalbital-Acetaminophen-Caffe Butalb/Acetaminophen/Caffeine | 78 |
| Donepezil Hcl | 71 |
| Galantamine Er Galantamine Hbr | 69 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 68 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Rodrigo Ubilluz, M.D. fits within the Neurology Physician landscape nationally.
19,885
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
Rodrigo Ubilluz, M.D.'s 2,084 claims are above the specialty average of 1,309.
Nearby Neurology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Ubilluz.
Dr. Hossam Abdelsalam
M.D.
Springfield, IL
Dr. Amro Abu Shanab
MD
Springfield, IL
Dr. Jayant Acharya
MD
Springfield, IL
Dr. Kabiyadi Acharya
M.D.
Springfield, IL
Maham Adeeb
Springfield, IL
Compare Neurology 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 Neurology 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 Rodrigo Ubilluz, M.D.'s specialty? ▼
Rodrigo Ubilluz, M.D. specializes in Neurology Physician and practices in Downers Grove, Illinois. Credentials: M.D..
How much does Rodrigo Ubilluz, M.D. prescribe under Medicare Part D? ▼
In 2023, Rodrigo Ubilluz, M.D. wrote 2,084 Medicare Part D claims totaling $611K in drug costs for 231 beneficiaries.
Where is Rodrigo Ubilluz, M.D. located? ▼
Rodrigo Ubilluz, M.D. is located at 4121 FAIRVIEW AVE, Downers Grove, IL, 60515. Phone: (630) 964-7136.
What is Rodrigo Ubilluz, M.D.'s NPI number? ▼
Rodrigo Ubilluz, M.D.'s National Provider Identifier (NPI) is 1811991383, issued on 06/12/2005.
Does Rodrigo Ubilluz, M.D. prescribe more brand-name or generic drugs? ▼
Rodrigo Ubilluz, M.D.'s prescribing is 8% brand-name and 91% generic drugs by claim count, with $543K in brand drug costs.
Does Rodrigo Ubilluz, M.D. prescribe opioids? ▼
Yes, Rodrigo Ubilluz, M.D. had 87 opioid claims in 2023 with an opioid prescribing rate of 4.2%.
How many Neurology Physician providers are there in the US? ▼
There are 19,885 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does Rodrigo Ubilluz, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Rodrigo Ubilluz, M.D.'s most frequently prescribed drugs include Gabapentin, Clonazepam, Levetiracetam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Rodrigo Ubilluz, M.D. accept Medicare? ▼
Rodrigo Ubilluz, M.D. appears in CMS Medicare data with 2,084 Part D claims and 231 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Rodrigo Ubilluz, M.D.'s credentials? ▼
Rodrigo Ubilluz, M.D.'s NPI is 1811991383 with credentials M.D.. 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.