NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1467484410 M.D.
Verify on CMS → Matthew Horowitz, M.D.
Gastroenterology Physician in Homewood, 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 16,601 in Gastroenterology 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
742
Medicare Part D claims · 277 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
85.1/100
▲ 2 pts above national avg 83.1 · Above neutral
Industry payments
$56.71
3 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
Matthew Horowitz, M.D. reported a CMS MIPS final score of 85.1/100 - above the 83.1 national average - and filed 742 Medicare Part D claims in 2023.
- 85.1/100
- MIPS score · +2 vs avg
- 742
- Part D claims, 2023
- 81%
- 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.
Matthew Horowitz, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
85 49th percentile higher than 49% 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 Matthew Horowitz, M.D. sits
This provider among gastroenterology physician peers
Across the 5,957 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Matthew Horowitz, M.D. writes more Part D claims than 47% of them and scores higher on MIPS quality than 53% - 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 gastroenterology physician peer from a representative sample of 60; the gold marker is Matthew Horowitz, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Matthew Horowitz, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Matthew Horowitz, M.D.?
High performer (top quartile)Primary specialty
Gastroenterology Physician
Medicare Part D claims
742 11% vs specialty avg
MIPS final score
85.1/100 2 pts vs avg
Specialty distribution in Illinois
How Gastroenterology Physician compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Matthew Horowitz, M.D.'s 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 85.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Gastroenterology Physician) - 85.1/100 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).
Matthew Horowitz, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 17901 GOVERNORS HWY, Homewood, IL, 60430, with a listed phone of (708) 799-3305. NPI 1467484410 was issued on 07/07/2006.
Medicare Part D records for calendar year 2023 show 742 prescription claims written by this provider, covering 277 Medicare beneficiaries and totaling roughly $236K in drug spend, split 19% brand-name and 81% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 85.1/100 for the 2023 performance year (Quality 73.2, Cost 78), compared with the national average of 83.1.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,601 enrolled providers across 54 states and an average of 833 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 | 1467484410 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/07/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
85.094
Final Score
Avg: 83.1
73.1645
Quality
77.9822
Cost
99
Promoting Interoperability
Reporting: Group practice
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 Matthew Horowitz, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$57
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 Matthew Horowitz, M.D.. To verify Matthew Horowitz, 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 · Typical
Matthew Horowitz, M.D. - brand share 19.0%
Gastroenterology Physician average
19% brand-name claims vs 81% generic, on 742 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.
742
Total Claims
$236K
Total Drug Cost
277
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,100
- Total Day Supply
- 27,708
- Brand vs Generic
- 19% brand / 81% generic
- Brand Drug Cost
- $202K
- Generic Drug Cost
- $33K
Patient Demographics
- Average Patient Age
- 69.6 years
- Avg HCC Risk Score
- 1.10
- Gender Split
- 67% female / 33% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Matthew Horowitz, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
210 claims
- Peg 3350-Electrolyte
Peg 3350-Electrolyte
87 claims
- Famotidine 57
Famotidine
57 claims
- Omeprazole 34
Omeprazole
34 claims
- Linzess 32
Linzess
32 claims
- Mesalamine 29
Mesalamine
29 claims
- Azathioprine 23
Azathioprine
23 claims
- Dicyclomine Hcl 21
Dicyclomine Hcl
21 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 210 |
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 87 |
| Famotidine | 57 |
| Omeprazole | 34 |
| Linzess Linaclotide | 32 |
| Mesalamine | 29 |
| Azathioprine | 23 |
| Dicyclomine Hcl | 21 |
| Humira Pen Adalimumab | 15 |
| Dexilant Dexlansoprazole | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Matthew Horowitz, M.D. fits within the Gastroenterology Physician landscape nationally.
16,601
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Matthew Horowitz, M.D.'s 742 claims are below the specialty average of 833.
Nearby Gastroenterology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Horowitz.
Dr. Abdul Aadam
M.D.
Chicago, IL
Dr. Richard Aaronson
M.D.
Olympia Fields, IL
Dr. Abdelhai Abdelqader
MD
Maywood, IL
Dr. Mustafa Abdul-Hussein
MD
Mattoon, IL
Dr. Ayokunle Abegunde
M.D.
Maywood, IL
Compare Gastroenterology 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 Gastroenterology 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 Matthew Horowitz, M.D.'s specialty? ▼
Matthew Horowitz, M.D. specializes in Gastroenterology Physician and practices in Homewood, Illinois. Credentials: M.D..
How much does Matthew Horowitz, M.D. prescribe under Medicare Part D? ▼
In 2023, Matthew Horowitz, M.D. wrote 742 Medicare Part D claims totaling $236K in drug costs for 277 beneficiaries.
What is Matthew Horowitz, M.D.'s Medicare quality score? ▼
Matthew Horowitz, M.D. has a CMS MIPS Final Score of 85.1/100 (Quality: 73.2, Cost: 78). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Matthew Horowitz, M.D. located? ▼
Matthew Horowitz, M.D. is located at 17901 GOVERNORS HWY, Homewood, IL, 60430. Phone: (708) 799-3305.
What is Matthew Horowitz, M.D.'s NPI number? ▼
Matthew Horowitz, M.D.'s National Provider Identifier (NPI) is 1467484410, issued on 07/07/2006.
Does Matthew Horowitz, M.D. prescribe more brand-name or generic drugs? ▼
Matthew Horowitz, M.D.'s prescribing is 19% brand-name and 81% generic drugs by claim count, with $202K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,601 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Matthew Horowitz, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Matthew Horowitz, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Peg 3350-Electrolyte, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Matthew Horowitz, M.D. accept Medicare? ▼
Matthew Horowitz, M.D. appears in CMS Medicare data with 742 Part D claims and 277 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Matthew Horowitz, M.D.'s credentials? ▼
Matthew Horowitz, M.D.'s NPI is 1467484410 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.
- 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.
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.