NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1871685990 M.D.
Verify on CMS → Stephen Hornak, M.D.
Cardiovascular Disease Physician in Richmond, Indiana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 24,810 in Cardiovascular Disease 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
7K
Medicare Part D claims · 862 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$977.37
55 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Stephen Hornak, M.D. filed 7,265 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in Richmond, Indiana, prescribing 80% generic.
- 7K
- Part D claims, 2023
- 80%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥97th
- 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.
CMS NPPES provider registry desk
NPI 1871685990 · Cardiovascular Disease Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1871685990
- ENUM-LEGACY 2006
- TAX-MID 25K Cardiovascular Disease
- RX-MID 7,265
- BOOK-THIN 413 in Indiana
- PHOTO-ENUM Vaskar Mukerji · 2006
Stephen Hornak, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
7,265 ≥ 97th percentile 97% 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)
Stephen Hornak, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Stephen Hornak, M.D.?
Quality data not reportedPrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
7,265 140% vs specialty avg
Specialty distribution in Indiana
How Cardiovascular Disease Physician compares to other specialties among Indiana 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 Cardiovascular Disease 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 | 1871685990 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/28/2006 |
Hospital and facility affiliations
Facilities where Stephen Hornak, M.D. 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.
Reid Physician Associates Inc
Richmond, IN
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 Stephen Hornak, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$977
Largest payer
Novartis Pharmaceuticals Corporation
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.
Brand vs generic prescribing mix · Typical
Stephen Hornak, M.D. - brand share 20.0%
Cardiovascular Disease Physician average
20% brand-name claims vs 80% generic, on 7,265 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.
7,265
Total Claims
$1.5M
Total Drug Cost
862
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 15,941
- Total Day Supply
- 473,671
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $1.3M
- Generic Drug Cost
- $145K
Patient Demographics
- Average Patient Age
- 73.9 years
- Avg HCC Risk Score
- 1.74
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 101, 65-74: 362, 75-84: 276, 85+: 123
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stephen Hornak, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
707 claims
- Eliquis
Eliquis
515 claims
- Isosorbide Mononit…
Isosorbide Mononitrate Er
414 claims
- Bisoprolol Fumarate
Bisoprolol Fumarate
386 claims
- Metoprolol Succinate
Metoprolol Succinate
362 claims
- Clopidogrel
Clopidogrel
327 claims
- Metoprolol Tartrate 263
Metoprolol Tartrate
263 claims
- Lisinopril 241
Lisinopril
241 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 707 |
| Eliquis Apixaban | 515 |
| Isosorbide Mononitrate Er Isosorbide Mononitrate | 414 |
| Bisoprolol Fumarate | 386 |
| Metoprolol Succinate | 362 |
| Clopidogrel Clopidogrel Bisulfate | 327 |
| Metoprolol Tartrate | 263 |
| Lisinopril | 241 |
| Furosemide | 222 |
| Spironolactone | 180 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Cardiovascular Disease Physician Overview
How Stephen Hornak, M.D. fits within the Cardiovascular Disease Physician landscape nationally.
24,810
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
Stephen Hornak, M.D.'s 7,265 claims are above the specialty average of 3,033.
Nationwide Cardiovascular Disease Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hornak, both outside Indiana so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Cardiovascular Disease Physician Providers in Indiana
Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as Hornak.
One of 413 Cardiovascular Disease Physician providers enrolled in Indiana, 5 are shown here.
Dr. Ahmed Abdel-Latief
MD
South Bend, IN
Dr. Ibrahim Abu Romeh
MD
Avon, IN
Dr. Frank Addo
MD
Plymouth, IN
Dr. Sanjiv Aggarwal
MD
Fort Wayne, IN
Dr. Amna Ahmed
MD
Avon, IN
Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stephen Hornak, M.D.'s specialty? ▼
Stephen Hornak, M.D. specializes in Cardiovascular Disease Physician and practices in Richmond, Indiana. Credentials: M.D..
How much does Stephen Hornak, M.D. prescribe under Medicare Part D? ▼
In 2023, Stephen Hornak, M.D. wrote 7,265 Medicare Part D claims totaling $1.5M in drug costs for 862 beneficiaries.
Where is Stephen Hornak, M.D. located? ▼
Stephen Hornak, M.D. is located at 1100 REID PKWY, Richmond, IN, 47374. Phone: (765) 962-1337.
What is Stephen Hornak, M.D.'s NPI number? ▼
Stephen Hornak, M.D.'s National Provider Identifier (NPI) is 1871685990, issued on 09/28/2006.
Does Stephen Hornak, M.D. prescribe more brand-name or generic drugs? ▼
Stephen Hornak, M.D.'s prescribing is 20% brand-name and 80% generic drugs by claim count, with $1.3M in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,810 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does Stephen Hornak, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephen Hornak, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Eliquis, Isosorbide Mononitrate Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Hornak, M.D. accept Medicare? ▼
Stephen Hornak, M.D. appears in CMS Medicare data with 7,265 Part D claims and 862 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Hornak, M.D.'s credentials? ▼
Stephen Hornak, M.D.'s NPI is 1871685990 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
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.