2026 NPPES data Psychiatry Physician NPI 1154306389 DO
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STEVEN KOURIS, DO

Psychiatry Physician in ROCKFORD, 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
2K
Medicare Part D claims · 74 beneficiaries · Psychiatry Physician avg: 1K

What the federal data shows

STEVEN KOURIS, DO filed 2,108 Medicare Part D claims in 2023 as a Psychiatry Physician in ROCKFORD, Illinois.

2K
Part D claims, 2023

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.

STEVEN KOURIS, DO's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

2,108 Top 15% higher than 85% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

STEVEN KOURIS, DO 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).

What does the federal data show about STEVEN KOURIS, DO?

Quality data not reported

NPI registry status

Active

Issued 12/09/2005

NPI 1154306389

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

2,108 103% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in Illinois

How Psychiatry Physician compares to other specialties among Illinois providers

Illinois providers

Psychiatry Physician share within Illinois

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Psychiatry 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).

STEVEN KOURIS, DO appears in the CMS NPPES registry as a Psychiatry Physician provider holding DO credentials at 1601 PARKVIEW AVE, ROCKFORD, IL, 61107, with a listed phone of (815) 395-5870. NPI 1154306389 was issued on 12/09/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KOURIS 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 2,108 prescription claims written by this provider, covering 74 Medicare beneficiaries and totaling roughly $53K in drug spend. 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.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

1601 PARKVIEW AVE
ROCKFORD, IL 61107

Provider Details

NPI 1154306389
Specialty Psychiatry Physician
Credentials DO
Gender Male
NPI Issued 12/09/2005

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 STEVEN KOURIS, DO. To verify STEVEN KOURIS, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

2,108
Total Claims
$53K
Total Drug Cost
74
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,143
Total Day Supply
63,205
Generic Drug Cost
$52K

Patient Demographics

Average Patient Age
57.9 years
Avg HCC Risk Score
0.84
Gender Split
38% female / 62% male
Age Distribution
<65: 47, 65-74: 20, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What STEVEN KOURIS, DO prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Risperidone
433
Quetiapine Fumarate
194
Sertraline Hcl
172
Fluoxetine Hcl
145
Clonazepam
142
Olanzapine
126
Citalopram Hbr
Citalopram Hydrobromide
97
Divalproex Sodium
84
Mirtazapine
73
Divalproex Sodium Er
Divalproex Sodium
72

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

Psychiatry Physician Overview

How STEVEN KOURIS, DO fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

STEVEN KOURIS, DO's 2,108 claims are above the specialty average of 1,038.

Nearby Psychiatry Physician Providers in Illinois

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

Compare Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STEVEN KOURIS, DO's specialty?
STEVEN KOURIS, DO specializes in Psychiatry Physician and practices in ROCKFORD, Illinois. Credentials: DO.
How much does STEVEN KOURIS, DO prescribe under Medicare Part D?
In 2023, STEVEN KOURIS, DO wrote 2,108 Medicare Part D claims totaling $53K in drug costs for 74 beneficiaries.
Where is STEVEN KOURIS, DO located?
STEVEN KOURIS, DO is located at 1601 PARKVIEW AVE, ROCKFORD, IL, 61107. Phone: (815) 395-5870.
What is STEVEN KOURIS, DO's NPI number?
STEVEN KOURIS, DO's National Provider Identifier (NPI) is 1154306389, issued on 12/09/2005.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does STEVEN KOURIS, DO prescribe most often?
Based on 2023 Medicare Part D data, STEVEN KOURIS, DO's most frequently prescribed drugs include Risperidone, Quetiapine Fumarate, Sertraline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEVEN KOURIS, DO accept Medicare?
STEVEN KOURIS, DO appears in CMS Medicare data with 2,108 Part D claims and 74 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEVEN KOURIS, DO's credentials?
STEVEN KOURIS, DO's NPI is 1154306389 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

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