Stephen Marcoux, M.D.
Psychiatry Physician in Chicago, 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 54,383 in Psychiatry 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.
What the federal data shows
Stephen Marcoux, M.D. reported a CMS MIPS final score of 97.7/100 - above the 83.5 national average - and filed 357 Medicare Part D claims in 2024.
- 97.7/100
- MIPS score · +14 vs avg
- 357
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥84th
- pct among measured MIPS (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.
Federal trust snapshot
What official records show about Stephen Marcoux, M.D.
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1467862144), first enumerated 05/02/2014.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 357 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 97.7/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Stephen Marcoux, M.D.'s individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Marcoux with other Psychiatry Physician providers
Same primary specialty, same federal CMS NPPES roster.
All 766 Psychiatry Physician providers in Chicago, IL →
Also enrolled in Illinois
- Dr. Alexandra Aaronson, M.D. Chicago, IL
- Dr. Anthony Abadir, MD Oak Park, IL
- Dr. Jeff Abbott, M.D. Chicago, IL
- Kathryn Abbott Chicago, IL
- Dr. Gil Abelita, MD Bloomington, IL
- Dr. Dinuk Abeysekera, M.D. North Chicago, IL
Other specialties in Chicago: Student in an Organized Health Care Education/Training Program (5,297) · Clinical Social Worker (4,054) · Internal Medicine Physician (3,291) · Physical Therapist (2,616)
CMS NPPES provider registry desk
NPI 1467862144 · Psychiatry Physician
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-ELITE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1467862144
- ENUM-MID 2014
- TAX-MEGA 54K Psychiatry Physician
- MIPS-ELITE 97.7/100
- RX-LIGHT 357
- BOOK-LIGHT 2,003 in Illinois
- PHOTO-FINISH Terrence Norton, M.D. · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Brian Bayze, M.D…
Brian Bayze, M.D.
97.6 MIPS pts
- Marcoux · this p…
Marcoux · this provider
97.7 MIPS pts
- Terrence Norton,…
Terrence Norton, M.D.
97.7 MIPS pts
- Kristin Rosseau,…
Kristin Rosseau, MD, MS
97.7 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Stephen Marcoux, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
98 ≥ 84th percentile 84% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Stephen Marcoux, M.D. sits
This provider among psychiatry physician peers
Across the 4,541 psychiatry physician providers who report both Medicare Part D prescribing and a MIPS quality score, Stephen Marcoux, M.D. writes more Part D claims than 49% of them and scores higher on MIPS quality than 87% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one psychiatry physician peer from a representative sample of 60; the gold marker is Stephen Marcoux, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
Stephen Marcoux, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Marcoux, M.D.?
High performer (top quartile)Primary specialty
Medicare Part D claims
MIPS final score
Specialty distribution in Illinois
How Psychiatry Physician compares to other specialties among Illinois providers
Psychiatry Physician ranks #31 among Illinois's specialties (0.8% of in-state providers)
Each bar is a specialty's share of the Illinois provider total, by primary NUCC taxonomy. The highlighted bar is Psychiatry Physician; the long tail of smaller specialties is omitted for legibility.
Medicare quality performance, MIPS
Stephen Marcoux, M.D.'s 2023 MIPS final score plotted against the Psychiatry Physician national average
- MIPS Final Score
- 97.7/100
- vs 83.5 national avg · 2023 performance year
Quality benchmarks
- National MIPS avg 2023 measured reporting year
- Quality dim CMS Quality category
- Specialty volume Psychiatry Physician US NPIs
97.7/100 MIPS final score - 14.2 pts above the 83.5 national average
Quality, Cost, Promoting Interoperability, and Improvement Activities composite score for the 2023 performance year. Specialty: Psychiatry Physician. Quality dim: 75.4.
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 | 1467862144 |
|---|---|
| Specialty | Psychiatry Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/02/2014 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Stephen Marcoux, M.D.'s current license status, disciplinary history, and board certifications with the Illinois Department of Financial and Professional Regulation in Illinois before relying on this page for a clinical or care decision.
How we sourced this profile
Profile fields combine the CMS NPPES monthly snapshot (provider directory, taxonomy, and address) with calendar-year 2023 Medicare Part D and MIPS public-use files when records are present. NPI 1467862144 is the unique 10-digit identifier CMS uses to link Marcoux across every Medicare, Medicaid, and HIPAA-covered transaction. Read full methodology →
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Stephen Marcoux, 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.
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Marcoux, M.D.. To verify Stephen Marcoux, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
Prescribing Breakdown
- 30-Day Fills
- 569.233
- Total Day Supply
- 16,659
- Generic Drug Cost
- $13K
Patient Demographics
- Average Patient Age
- 58.0 years
- Avg HCC Risk Score
- 2.67
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 24, 65-74: 11, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Stephen Marcoux, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Buspirone Hcl
Buspirone Hcl
43 claims
- Escitalopram Oxalate
Escitalopram Oxalate
30 claims
- Trazodone Hcl
Trazodone Hcl
29 claims
- Duloxetine Hcl
Duloxetine Hcl
27 claims
- Hydroxyzine Hcl
Hydroxyzine Hcl
26 claims
- Bupropion Xl
Bupropion Xl
22 claims
- Clonazepam 16
Clonazepam
16 claims
- Lurasidone Hcl 15
Lurasidone Hcl
15 claims
| Drug | Claims |
|---|---|
| Buspirone Hcl | 43 |
| Escitalopram Oxalate | 30 |
| Trazodone Hcl | 29 |
| Duloxetine Hcl | 27 |
| Hydroxyzine Hcl | 26 |
| Bupropion Xl Bupropion Hcl | 22 |
| Clonazepam | 16 |
| Lurasidone Hcl | 15 |
| Prazosin Hcl | 13 |
| Lorazepam | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Psychiatry Physician Overview
How Stephen Marcoux, M.D. fits within the Psychiatry Physician landscape nationally.
Stephen Marcoux, M.D.'s 357 claims are below the specialty average of 1,010.
Nationwide Psychiatry Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Marcoux, both outside Illinois so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (97.7 here).
Same NPPES enumeration year (2014)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychiatry Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Marcoux.
One of 2,003 Psychiatry Physician providers enrolled in Illinois, 11 are shown on this page.
Compare Psychiatry Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stephen Marcoux, M.D.'s specialty? ▼
How much does Stephen Marcoux, M.D. prescribe under Medicare Part D? ▼
What is Stephen Marcoux, M.D.'s Medicare quality score? ▼
Where is Stephen Marcoux, M.D. located? ▼
What is Stephen Marcoux, M.D.'s NPI number? ▼
How many Psychiatry Physician providers are there in the US? ▼
What drugs does Stephen Marcoux, M.D. prescribe most often? ▼
Does Stephen Marcoux, M.D. accept Medicare? ▼
How can I verify Stephen Marcoux, M.D.'s credentials? ▼
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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.
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