2026 NPPES data Interventional Cardiology Physician NPI 1023061108 MD
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STEPHEN ROWLEY, MD

Interventional Cardiology Physician in DOWNERS GROVE, Illinois. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
6K
Medicare Part D claims · 693 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: STEPHEN ROWLEY, MD is a Interventional Cardiology Physician ([object Object]) practicing in DOWNERS GROVE, Illinois with a Medicare Part D prescribing footprint of 6K claims across 693 beneficiaries — 10% brand-name prescribing .

What the federal data shows

STEPHEN ROWLEY, MD filed 6,344 Medicare Part D claims in 2023 as a Interventional Cardiology Physician in DOWNERS GROVE, Illinois, prescribing 90% generic.

6K
Part D claims, 2023
90%
generic prescribing

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.

Board-eligible specialty (heuristic — not verified)

STEPHEN ROWLEY, MD 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).

STEPHEN ROWLEY, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 05/18/2006

NPI 1023061108

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

6,344 113% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

Specialty distribution in Illinois

How Interventional Cardiology Physician compares to other specialties among Illinois providers

Illinois providers

Interventional Cardiology Physician share within Illinois

1. Interventional Cardiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Interventional Cardiology Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Interventional Cardiology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Interventional Cardiology Physician ABMS/AOA estimate

Est. board-certified rate (Interventional Cardiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Interventional Cardiology Physician) — ABMS / AOA estimate

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).

STEPHEN ROWLEY, MD is a Interventional Cardiology Physician provider practicing in DOWNERS GROVE, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1023061108. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

STEPHEN ROWLEY, MD appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding MD credentials at 3825 HIGHLAND AVE, DOWNERS GROVE, IL, 60515, with a listed phone of (630) 719-4799. NPI 1023061108 was issued on 05/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ROWLEY most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 6,344 prescription claims written by this provider, covering 693 Medicare beneficiaries and totaling roughly $894K in drug spend, split 10% brand-name and 90% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Interventional Cardiology Physician is a narrow specialty nationwide, with 3,382 enrolled providers across 53 states and an average of 2,984 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

3825 HIGHLAND AVE
DOWNERS GROVE, IL 60515

Provider Details

NPI 1023061108
Specialty Interventional Cardiology Physician
Credentials MD
Gender Male
NPI Issued 05/18/2006

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 STEPHEN ROWLEY, MD. To verify STEPHEN ROWLEY, 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.

Brand vs generic prescribing mix · Typical

STEPHEN ROWLEY, MD — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 6,344 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.

6,344
Total Claims
$894K
Total Drug Cost
693
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
17,250
Total Day Supply
514,560
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$767K
Generic Drug Cost
$127K

Patient Demographics

Average Patient Age
77.5 years
Avg HCC Risk Score
1.45
Gender Split
48% female / 52% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
925
Metoprolol Succinate
499
Amlodipine Besylate
337
Losartan Potassium
298
Carvedilol
277
Lisinopril
267
Eliquis
Apixaban
241
Metoprolol Tartrate
231
Furosemide
222
Rosuvastatin Calcium
219

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Interventional Cardiology Physician Overview

How STEPHEN ROWLEY, MD fits within the Interventional Cardiology Physician landscape nationally.

3,382
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider

STEPHEN ROWLEY, MD's 6,344 claims are above the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in Illinois

Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as ROWLEY.

Compare Interventional Cardiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STEPHEN ROWLEY, MD's specialty?
STEPHEN ROWLEY, MD specializes in Interventional Cardiology Physician and practices in DOWNERS GROVE, Illinois. Credentials: MD.
How much does STEPHEN ROWLEY, MD prescribe under Medicare Part D?
In 2023, STEPHEN ROWLEY, MD wrote 6,344 Medicare Part D claims totaling $894K in drug costs for 693 beneficiaries.
Where is STEPHEN ROWLEY, MD located?
STEPHEN ROWLEY, MD is located at 3825 HIGHLAND AVE, DOWNERS GROVE, IL, 60515. Phone: (630) 719-4799.
What is STEPHEN ROWLEY, MD's NPI number?
STEPHEN ROWLEY, MD's National Provider Identifier (NPI) is 1023061108, issued on 05/18/2006.
Does STEPHEN ROWLEY, MD prescribe more brand-name or generic drugs?
STEPHEN ROWLEY, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $767K in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US?
There are 3,382 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
What drugs does STEPHEN ROWLEY, MD prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN ROWLEY, MD's most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Succinate, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN ROWLEY, MD accept Medicare?
STEPHEN ROWLEY, MD appears in CMS Medicare data with 6,344 Part D claims and 693 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN ROWLEY, MD's credentials?
STEPHEN ROWLEY, MD's NPI is 1023061108 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

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