NPI registry status
Active
2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1194344663 DO
Verify on CMS → Lorenzo Diaz, DO
Physical Medicine & Rehabilitation Physician in Maywood, 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 15,336 in Physical Medicine & Rehabilitation 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
89
Medicare Part D claims · 13 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$287.14
9 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Lorenzo Diaz, DO filed 89 Medicare Part D claims in 2023 as a Physical Medicine & Rehabilitation Physician in Maywood, Illinois, prescribing 88% generic.
- 89
- Part D claims, 2023
- 88%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥0th
- 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.
Lorenzo Diaz, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
89 ≥ 0th percentile 0% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Lorenzo Diaz, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 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 Lorenzo Diaz, DO?
Quality data not reportedPrimary specialty
Physical Medicine & Rehabilitation Physician
Medicare Part D claims
89 89% vs specialty avg
Specialty distribution in Illinois
How Physical Medicine & Rehabilitation 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 Physical Medicine & Rehabilitation 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).
Lorenzo Diaz, DO appears in the CMS NPPES registry as a Physical Medicine & Rehabilitation Physician provider holding DO credentials at 2160 S 1ST AVE, Maywood, IL, 60153, with a listed phone of (872) 231-3162. NPI 1194344663 was issued on 04/14/2020.
Medicare Part D records for calendar year 2023 show 89 prescription claims written by this provider, covering 13 Medicare beneficiaries and totaling roughly $20K in drug spend, split 12% brand-name and 88% generic by claim count.
Physical Medicine & Rehabilitation Physician is a mid-sized specialty nationwide, with 15,336 enrolled providers across 54 states and an average of 781 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 | 1194344663 |
|---|---|
| Specialty | Physical Medicine & Rehabilitation Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 04/14/2020 |
Hospital and facility affiliations
Facilities where Lorenzo Diaz, DO 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.
According to CMS billing records, Lorenzo Diaz, DO is affiliated with 3 Medicare-billing facilities across 2 states.
Integrated Rehab Consultants Florida PLLC
Lakeland, FL
Integrated Rehab Consultants LLC
Maywood, IL
Radial Health SC
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 Lorenzo Diaz, DO. Source: openpaymentsdata.cms.gov.
Total received
$287
Largest payer
ABBVIE 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 Lorenzo Diaz, DO. To verify Lorenzo Diaz, DO'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 · Typical
Lorenzo Diaz, DO - brand share 12.0%
Physical Medicine & Rehabilitation Physician average
12% brand-name claims vs 88% generic, on 89 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.
89
Total Claims
$20K
Total Drug Cost
13
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 93
- Total Day Supply
- 2,674
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $17K
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 68.6 years
- Avg HCC Risk Score
- 4.57
More Physical Medicine & Rehabilitation Physician in IL →
All providers in Illinois →
Compare specialties →
Physical Medicine & Rehabilitation Physician Overview
How Lorenzo Diaz, DO fits within the Physical Medicine & Rehabilitation Physician landscape nationally.
15,336
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider
Lorenzo Diaz, DO's 89 claims are below the specialty average of 781.
Nearby Physical Medicine & Rehabilitation Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Diaz.
One of 654 Physical Medicine & Rehabilitation Physician providers enrolled in Illinois, 5 are shown here.
Dr. Brian Abarbanel
MD
Chicago, IL
Dr. Mahmoud Abdel
MD
Oak Lawn, IL
Elizabeth Abe
Peoria, IL
Dr. Sol Abreu Sosa
MD
Chicago, IL
Dr. Roy Adair
MD
Oak Lawn, IL
Compare Physical Medicine & Rehabilitation 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 Physical Medicine & Rehabilitation 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 Lorenzo Diaz, DO's specialty? ▼
Lorenzo Diaz, DO specializes in Physical Medicine & Rehabilitation Physician and practices in Maywood, Illinois. Credentials: DO.
How much does Lorenzo Diaz, DO prescribe under Medicare Part D? ▼
In 2023, Lorenzo Diaz, DO wrote 89 Medicare Part D claims totaling $20K in drug costs for 13 beneficiaries.
Where is Lorenzo Diaz, DO located? ▼
Lorenzo Diaz, DO is located at 2160 S 1ST AVE, Maywood, IL, 60153. Phone: (872) 231-3162.
What is Lorenzo Diaz, DO's NPI number? ▼
Lorenzo Diaz, DO's National Provider Identifier (NPI) is 1194344663, issued on 04/14/2020.
Does Lorenzo Diaz, DO prescribe more brand-name or generic drugs? ▼
Lorenzo Diaz, DO's prescribing is 12% brand-name and 88% generic drugs by claim count, with $17K in brand drug costs.
How many Physical Medicine & Rehabilitation Physician providers are there in the US? ▼
There are 15,336 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
Does Lorenzo Diaz, DO accept Medicare? ▼
Lorenzo Diaz, DO appears in CMS Medicare data with 89 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lorenzo Diaz, DO's credentials? ▼
Lorenzo Diaz, DO's NPI is 1194344663 with credentials DO. 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
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.