Tracking the most important health care lawsuits in U.S. courts today
October 2, 2026 | Federal court allows unions to continue antitrust lawsuit against NewYork-Presbyterian
This important alert links to ‘UFCW Local 1500 Welfare Fund v. The New York and Presbyterian Hospital’How the Litigation Tracker Works
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Search for a lawsuit or issue Browse more than 430 cases across 9 issues
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Explore court filings Access our extensive library of curated court filings
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Subscribe for the latest Get real-time case updates
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Dive even deeper Read our expert analysis
Issues We’re Tracking
- 340B Program 21 cases
- Equity 53 cases 1 Topics
- Federal Health Funding 59 cases 5 Topics
- Health Care Affordability 64 cases 8 Topics
- Medicare Advantage 38 cases 5 Topics
- Prescription Drug Pricing 42 cases 5 Topics
- Private Health Insurance 115 cases 13 Topics
- Reproductive Health 54 cases 5 Topics
- Transparency and Quality 9 cases

Our Team
We created the Health Care Litigation Tracker to make it easier to monitor the cases you care about and understand how courts are shaping health policy.

Katie Keith
Director of the Center for Health Policy and the Law at the O’Neill Institute

Andrew J. Twinamatsiko
Director of the Center for Health Policy and the Law at the O’Neill Institute
Latest Updates
- Status
- Briefing is ongoing
- Court
- New Hampshire
- Goal
- Block enforcement of an agency action +2 additional goal(s)
- Status
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Briefing is ongoing
Motion to Dismiss Counterclaims Granted
- Court
- Texas Southern — Corpus Christi
- Goal
- Award damages
- Status
- Briefing is ongoing
- Court
- New York Southern
- Goal
- Award damages
2:26-cv-07537
Horizon Healthcare Services Inc. v. M&D Capital Premier Billing LLC
- Filed:
- June 23, 2026
- Status
- Briefing is ongoing
- Court
- New Jersey
- Goal
- Award damages +3 additional goal(s)
2:25-cv-02862
United Healthcare Services Inc. et al. v. Radiology Partners Inc. et al.
- Filed:
- August 8, 2025
- Status
- Briefing is ongoing
- Court
- Arizona
- Goal
- Award damages
- Status
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Decision issued
Motion for Preliminary Injunction Denied
- Court
- California Central — Western
- Goal
- Block operation of a program +1 additional goal(s)
25-8077
State of Washington et al. v. Department of Health and Human Services et al.
- Filed:
- December 29, 2025
- Status
- Briefing is ongoing
- Court
- Ninth Circuit
- Goal
- Block enforcement of an agency action +2 additional goal(s)
1:25-cv-10734
Pacific Inpatient Medical Group Inc. et al. v. Zelis Healthcare LLC et al.
- Filed:
- March 28, 2025
- Status
- Briefing is ongoing
- Court
- Massachusetts
- Goal
- Award damages +3 additional goal(s)
- Status
- Briefing is ongoing
- Court
- Ohio Southern — Western
- Goal
- Award damages +3 additional goal(s)
2:22-cv-00610
Uriel Pharmacy Health and Welfare Plan et al. v. Advocate Aurora Health Inc. et al.
- Filed:
- May 24, 2022
- Status
- Case Stayed
- Court
- Wisconsin Eastern
- Goal
- Award damages +3 additional goal(s)
- Status
- Briefing is ongoing
- Court
- New Jersey
- Goal
- Award damages +2 additional goal(s)
- Status
- Briefing is ongoing
- Court
- Connecticut
- Goal
- Certify class +2 additional goal(s)
Key Dates
Oral Argument
Defendants’ Response Brief Due
Joint Appendix and Plaintiffs’ Opening Brief Due
Hearing on Motions to Strike, Dismiss, and Stay Discovery
Oral Argument
Premotion Hearing
Plaintiff’s Reply Brief Due
Oral Argument
Defendants’ Response to Amended Complaint Due
Status Conference
Responses to Motion for Discovery Due
Defendants’ Brief Due
Plaintiffs’ Expert Disclosure Due
Plaintiffs’ Updated Reply Brief Due
Joint Status Report Due
Defendants’ Response to Motion for Preliminary Injunction Due
Plaintiffs’ Motion for Class Certification Due
Plaintiff’s Opening Brief Due
Discovery Deadline
Plaintiff’s Reply Brief Due
Responses to Motions to Dismiss and for Preliminary Injunction Due
Defendant’s Response Due
Defendants’ Cross-Motion for Summary Judgment Due
Joint Status Report Due
Hearing on Motion for Summary Judgment
Hearing on Motions to Dismiss
Petition for Rehearing En Banc Due
Oral Argument
Joint Status Report Due
Hearing on Motions to Dismiss
Hearing on Motion to Dismiss
Plaintiff’s Response Brief Due
Joint Status Report Due
Oral Argument
Discovery Deadline
Hearing on Motion to Dismiss
Joint Status Report Due
Defendants’ Opening Brief Due
Plaintiff’s Response Brief Due
Defendant’s Response Brief Due
Plaintiffs’ Response Brief Due
Dismissal Deadline
Plaintiffs’ Motion for Summary Judgment Due
Defendants’ Response Brief Due
Rule 26(f) Report Due
Joint Status Report Due
Expert Discovery Deadline
Motion to Certify Class Due
Plaintiff’s Expert Disclosure Due
Plaintiff’s Expert Reports Due
Joint Notice Due
Case Management Conference
Joint Status Report Due
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