Providers
All 43 in IL
NORTHWEST MEDICAL LAB INC
NPI 1275288862, organization, Downers Grove, IL, Clinical Medical Laboratory
1
Evidence tier
documented action, then payment
- Listed on the Medicare revocation list since May 23, 2024.
- Medicaid still paid claims in 5 later months, $221,263 in total.
- Medicaid dollars per patient on code 87637 ($303 per patient-month) sit in the top 5% of every provider billing that code.
score 99 of 100, rank 11, $221K at stake
Public list actions
Medicare revocation effective May 23, 2024, barred from re-enrolling until May 22, 2034
424.535(a)(4) false or misleading information, Part B Supplier - Independent Clinical Laboratory, IL
Paid after the action
Months in which Medicaid paid claims for this provider after a public action that should have triggered a screening check. This is a record of payments, not a determination that they were improper.
| list | identity check | action date | window closed | months paid after | first | last | paid after | 12 months before |
|---|---|---|---|---|---|---|---|---|
| Medicare revocation list 424.535(a)(4) false or misleading information | Exact NPI, name verified | May 23, 2024 | May 22, 2034 | 5 | Jun 2024 | Oct 2024 | $221K | $818K |
National provider registry
From the CMS NPPES Registry, refreshed daily.
| Name | NORTHWEST MEDICAL LAB INC (also NORTHWEST MEDICAL LAB USA INC) |
| Type | Organization |
| Status | Active |
| NPI issued | February 14, 2022, last updated March 22, 2024 |
| Practice location | 1315 BUTTERFIELD RD STE 201, Downers Grove, IL 60515-5602, 847-452-1011 |
| Authorized official | Marcela Corrales (President) |
| Specialties | Clinical Medical Laboratory (291U00000X, primary) |
Procedures billed
The specific codes behind the dollars. Medicaid figures come from T-MSIS (2018 to 2024) and are compared with every other provider billing the same code; Medicare figures come from the 2024 physician and supplier file and compare this provider's submitted charge with what Medicare allowed, against the usual ratio for that code.
Medicaid, largest codes
| code | what it is | paid | share | per patient-month | typical | rank among providers | |
|---|---|---|---|---|---|---|---|
| 87637 | Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus | $1.0M | 63% | $303 | $114 (top 5% from $186) | 99th percentile | |
| U0003 | Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, making use of high throughput technologies as described by cms-2020-01-r | $286K | 18% | $273 | $75 (top 5% from $185) | 100th percentile | |
| 87635 | Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | $131K | 8% | $128 | $44 (top 5% from $70) | 99th percentile | |
| G2023 | Specimen collection for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), any specimen source | $100K | 6% | $92 | $20 (top 5% from $39) | 100th percentile | |
| U0005 | Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, cdc or non-cdc, making use of high throughput technologies, completed within | $75K | 5% | $72 | $21 (top 5% from $38) | 99th percentile | |
| 87811 | Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) | $993 | 0% | $40 | $33 (top 5% from $45) | too few months to rank |
Medicare Part B 2024, largest codes
| code | what it is | services | beneficiaries | paid | submitted per service | allowed per service | charge to allowed | usual for this code |
|---|---|---|---|---|---|---|---|---|
| 87637 | Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus | 582 | 35 | $81K | $500 | $140 | 3.6x | 2.1x (90th percentile 3.0x) |
A submitted charge many times the allowed amount is common and lawful; it matters when it is far above what other providers submit for the same code.
In this area
43 providers in DuPage County, IL carry an indicator in the public record, with $15.8M at stake between them. The most common is part of a provider network, on 26 of them, followed by more hours than a day holds on 16.
| tier | provider | at stake | why |
|---|---|---|---|
| 3 | RESIDENTIAL HOME HEALTH ILLINOIS, LLC Lisle, IL, ranked 821 | $57K |
|
| 3 | CARDIAC IMAGING INC Oak Brook Terrace, IL, ranked 1229 | $296K |
|
| 3 | ALEXIAN BROTHERS MEDICAL CENTER Hanover Park, IL, ranked 1285 | $183K |
|
| 3 | ACUITY HOME HEALTH Lombard, IL, ranked 1917 | $0 |
|
| 3 | SERENITY ONE HOSPICE AND PALLIATIVE CARE LLC Lombard, IL, ranked 2255 | $0 |
|
| 3 | CLASSIC HEALTH SERVICES, INC. Lombard, IL, ranked 2753 | $0 |
|
| 3 | WESTMONT NURSING AND REHABILITATION CENTER LLC Westmont, IL, ranked 2916 | $0 |
|
| 3 | WINDSOR PARK MANOR Carol Stream, IL, ranked 3111 | $0 |
|
Recent enforcement in IL
All releasesDepartment of Justice and HHS-OIG releases for this state, newest first. Each opens in a new tab.
DOJChargedJun 23, 2026
United States Attorney Andrew S. Boutros Announces Charges Against Two Chicago-Area Defendants as Part of Department of Justice’s National Healthcare Fraud Takedown
Two Chicago-area defendants were charged, one for selling Medicare beneficiary information and providing fake AI-generated consent recordings so laboratories could bill Medicare for over-the-counter Covid-19 test kits that were never requested or provided, and the other for directing the creation of fake medical records and billing Illinois Medicaid for behavioral health counseling and therapy services that were never provided, including for deceased beneficiaries.
DOJConvictedJun 18, 2026
Suburban Chicago Chiropractor Convicted of Healthcare Fraud
A chiropractor submitted fraudulent claims to Blue Cross Blue Shield of Illinois for health care services that were not actually provided and submitted false patient medical records when the insurer attempted to audit the claims.
DOJSentencedJun 10, 2026
Jacksonville Chiropractor Sentenced to a Year in Prison for Healthcare Fraud and Related Offenses
Rondeau submitted more than 2,000 fraudulent claims to health insurance companies and convinced clients to sign false documents after learning he was under investigation.
DOJCivil settlementMay 8, 2026
Three Affiliated Skilled Nursing Facilities to Pay $300,000 to Resolve False Claims Act Allegations Related to Medically Unnecessary Rehabilitation Services
Three affiliated skilled nursing facilities billed Medicare between Jan. 1, 2014, and Sept. 30, 2019, for physical therapy, occupational therapy, and speech pathology services provided to patients for longer than medically necessary and without regard for patients' individual medical needs, resulting in claims based on inflated RUG levels.
DOJIndictedFeb 12, 2026
Two Foreign Nationals Indicted in Chicago as Part of $10 Million Health Care Fraud Scheme
The indictment alleges the defendants used nominee-owned laboratories and durable medical equipment providers to submit fraudulent claims to Medicare and private health care benefit programs for items and services that were not provided, and laundered and transferred proceeds to Pakistan.
Referral packet
The packet is a draft for a reviewer. It reads every public record behind this case, states what the records show with a citation for each finding, names the regulation each finding relates to, and lists the ordinary explanations to rule out first. It never asserts intent.