2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1588630495 MD
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ANDREW KORCEK, MD

Critical Care Medicine (Internal Medicine) Physician in WINFIELD, 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 · 375 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
33%
generic claims · 67% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ANDREW KORCEK, MD filed 1,525 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in WINFIELD, Illinois, prescribing 33% generic.

2K
Part D claims, 2023
33%
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.

ANDREW KORCEK, MD's Medicare Part D volume vs every U.S. prescriber

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

1,525 Top 19% higher than 81% 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%). This entry sits in this band. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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 certification likely (heuristic — not verified)

ANDREW KORCEK, MD 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 ANDREW KORCEK, MD?

Quality data not reported

NPI registry status

Active

Issued 02/28/2006

NPI 1588630495

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

1,525 43% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

Specialty distribution in Illinois

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Illinois providers

Illinois providers

Critical Care Medicine (Internal Medicine) Physician share within Illinois

1. Critical Care Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine (Internal Medicine) Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Critical Care Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Critical Care Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Critical Care Medicine (Internal Medicine) 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).

ANDREW KORCEK, MD appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding MD credentials at 25 N WINFIELD ROAD, WINFIELD, IL, 60190, with a listed phone of (630) 871-6699. NPI 1588630495 was issued on 02/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KORCEK 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 1,525 prescription claims written by this provider, covering 375 Medicare beneficiaries and totaling roughly $1.1 million in drug spend, split 67% brand-name and 33% 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.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 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

25 N WINFIELD ROAD
WINFIELD, IL 60190

Provider Details

NPI 1588630495
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 02/28/2006

Hospital and facility affiliations

Facilities where ANDREW KORCEK, MD 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.

DUPAGE MEDICAL GROUP LTD
WINFIELD, IL

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 ANDREW KORCEK, MD. To verify ANDREW KORCEK, 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 · Brand-heavy

ANDREW KORCEK, MD — brand share 67.0%
Specialty average (est.)

67% brand-name claims vs 33% generic, on 1,525 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.

1,525
Total Claims
$1.1M
Total Drug Cost
375
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,778
Total Day Supply
79,585
Brand vs Generic
67% brand / 33% generic
Brand Drug Cost
$1.1M
Antibiotic Claims
101

Patient Demographics

Average Patient Age
74.6 years
Avg HCC Risk Score
1.90
Gender Split
54% female / 46% male
Age Distribution
<65: 23, 65-74: 164, 75-84: 151, 85+: 37

Top Prescribed Drugs (Medicare Part D)

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

What ANDREW KORCEK, MD 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
Albuterol Sulfate Hfa
Albuterol Sulfate
218
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
168
Breo Ellipta
Fluticasone/Vilanterol
159
Anoro Ellipta
Umeclidinium Brm/Vilanterol Tr
121
Prednisone
98
Azithromycin
70
Advair Hfa
Fluticasone Propion/Salmeterol
67
Advair Diskus
Fluticasone Propion/Salmeterol
56
Fluticasone-Salmeterol
Fluticasone Propion/Salmeterol
53
Symbicort
Budesonide/Formoterol Fumarate
45

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

Critical Care Medicine (Internal Medicine) Physician Overview

How ANDREW KORCEK, MD fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

ANDREW KORCEK, MD's 1,525 claims are above the specialty average of 1,069.

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Illinois

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

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANDREW KORCEK, MD's specialty?
ANDREW KORCEK, MD specializes in Critical Care Medicine (Internal Medicine) Physician and practices in WINFIELD, Illinois. Credentials: MD.
How much does ANDREW KORCEK, MD prescribe under Medicare Part D?
In 2023, ANDREW KORCEK, MD wrote 1,525 Medicare Part D claims totaling $1.1M in drug costs for 375 beneficiaries.
Where is ANDREW KORCEK, MD located?
ANDREW KORCEK, MD is located at 25 N WINFIELD ROAD, WINFIELD, IL, 60190. Phone: (630) 871-6699.
What is ANDREW KORCEK, MD's NPI number?
ANDREW KORCEK, MD's National Provider Identifier (NPI) is 1588630495, issued on 02/28/2006.
Does ANDREW KORCEK, MD prescribe more brand-name or generic drugs?
ANDREW KORCEK, MD's prescribing is 67% brand-name and 33% generic drugs by claim count, with $1.1M in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does ANDREW KORCEK, MD prescribe most often?
Based on 2023 Medicare Part D data, ANDREW KORCEK, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Trelegy Ellipta, Breo Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANDREW KORCEK, MD accept Medicare?
ANDREW KORCEK, MD appears in CMS Medicare data with 1,525 Part D claims and 375 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANDREW KORCEK, MD's credentials?
ANDREW KORCEK, MD's NPI is 1588630495 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