Manatt, Phelps & Phillips, LLP advises health insurers and related service providers through its Manatt Health practice, which combines legal services with regulatory, policy, reimbursement, and data analytics advisory functions. The team has a particular focus on Medicaid and Medicare managed care and advises clients on federal and state regulatory compliance. William Bernstein oversees the team from the New York office and is ably supported by Robert Belfort, whose practice spans regulatory compliance and transactional matters, notably transactions that raise complex regulatory issues, and Randi Seigel, who possesses deep regulatory knowledge, particularly in HIPAA and state privacy laws, state licensure and scope of practice law, telehealth, AI, and Medicare and Medicaid conditions. In the Los Angeles office, Greg Pimstone is a reputed appellate litigator known for his work in class actions and government investigations. Also based in Los Angeles, Paul Carr-Rollitt focuses his practice on transactional mandates, as well as corporate governance and licensure matters. Ileana Hernandez left the firm in February 2025.

McDermott Will & Schulte

Crowell & Moring LLP is noted for its particular experience representing managed care organizations in complex litigation and arbitration, government investigations and enforcement actions, including fraud and abuse matters, RADV audits, Star Ratings matters, No Surprises Act disputes, and coverage-related challenges. The group also advises health plans on regulatory compliance under Medicare, Medicaid and the Affordable Care Act. At the helm of the practice are Troy Barsky, who excels in Medicaid and Medicare matters and is based in the Washington DC office; Mike Lieberman, also based in Washington DC, who is the go-to for commercial healthcare disputes at the federal, state, and arbitral levels; and Chicago-based Martin Bishop, who joined the firm in August 2025, along with 15 other partners from Reed Smith LLP, where he acted as practice head. Key arrivals from the Reed Smith LLP hires include Steven Hamilton, Bryan Webster, Rebecca Hanson, Alexandra Lucas, and Amir Shlesinger. In the wider team, Jennifer Romano is a healthcare litigation expert in the Los Angeles office, and Kelly Hibbert, based in Washington DC, is highly skilled in government investigations, qui tam actions, and commercial disputes.

Dentons advises on the full spectrum of regulatory, transactional, litigation, and compliance matters. The group represents insurance companies offering commercial health insurance, Medicare Advantage, and Medicaid managed care products. The practice is anchored by San Francisco-based Kimberly Kerry, who is highly experienced in Medicare and Medicaid enrollment and licensing issues. Key names from the New York office include Janice Ziegler, who is skilled in managed care matters; Charles Luband, who is well versed in financing and rate-setting issues; Medicaid expert Claire Bornstein; and Sean Cenawood, whose specialty lies in fraud and internal investigations. In Washington, DC, Bruce Merlin Fried has a strong reputation in the healthcare space; Christopher Janney is experienced in structuring compliant business and clinical arrangements; and Gadi Weinreich is the go-to for fraud and abuse matters. Kate Sullivan Morgan is a key name for multi-state health insurance matters. Margo Wilkinson Smith is also a name to highlight in the Kansas City office.

Greenberg Traurig advises health insurers and health plans on regulatory, transactional, and compliance matters, including work for commercial insurers and Medicare Advantage and Medicaid managed care organizations. The team is highly skilled in health insurance transactions and regulatory due diligence, including state licensure, provider contracting, and compliance with federal and state insurance requirements, as well as audits, investigations, and enforcement actions. The practice is jointly anchored by Tricia Asaro, who is highly experienced in regulatory compliance matters for health plans, and Fort Lauderdale – based David Peck, who provides corporate expertise. Key names in the practice include Eileen Hayes, who is an expert in regulatory matters, and Harold Iselin , who is active in matters that sit at the intersection of healthcare and government affairs. All lawyers mentioned are based in the Albany office unless otherwise stated.

Health insurers and managed care organizations routinely seek the assistance of Hogan Lovells US LLP on regulatory, litigation, and transactional matters across Medicare, Medicaid, and commercial insurance markets. The practice acts for national and regional health plans on insurer-side antitrust and ERISA litigation, privacy and cyber incident response, FCA and Medicaid enforcement matters, and challenges to medical coverage and utilization policies, including system-wide and multidistrict proceedings. Leading from the Washington, DC office, Ronald Wisor heads the practice, whose main focus is healthcare fraud and abuse compliance. Also based in the Washington, DC office, Scott Loughlin is a key name for matters involving cybersecurity risks and data privacy in the healthcare space. In Miami, Craig Smith is highly experienced in Medicare and Medicaid program issues. New York-based Jeffrey Schneider's extensive experience spans compliance, governance, coverage, reimbursement, and survey and certification matters.

O'Melveny

Reed Smith LLP

Sheppard is distinguished by its expertise advising health plans on mergers, acquisitions and joint ventures, including the formation of new Medicare Advantage plans, insurer–provider risk-bearing arrangements, and transactions involving national health insurers, as well as related state and federal regulatory approvals. Overseeing the running of the practice are Los Angeles-based Eric Klein, who is reputed for his M&A work in the healthcare space; Amanda Zablocki, who is noted for her deep experience advising on Medicare Advantage, Medicaid and consumer-focused projects in New York; Christine Clements, who leads on the regulatory-focused work from Washington DC; San Francisco-based Eric Newsom, who serves as transactions lead in the group; and Danielle Vrabie, who is the resident litigation expert situated in the New York office. In the wider practice, Lynsey Mitchel, in Century City, is experienced in the managed care space and Moe Keshavarzi is skilled in disputes, based in Los Angeles. Matthew Goldman is a key name in Century City for regulatory work.

Epstein Becker & Green, P.C.

Grounded in its insurance expertise, Gibson, Dunn & Crutcher LLP regularly represents insurers in False Claims Act and Anti-Kickback Statute matters, risk-adjustment and reimbursement disputes, and coverage and payment litigation. This includes parallel civil, criminal, and administrative proceedings, as well as national class actions and bad-faith claims. The practice is jointly led by Geoffrey Sigler in the Washington, D.C., office, who focuses on insurer-side litigation and advisory work involving ERISA, the Affordable Care Act, Medicare, and False Claims Act matters; and Los Angeles-based Deborah Stein, who excels in litigation involving insurance coverage and business-practices disputes. Also in the Los Angeles office, Heather Richardson is a go-to for advice on reimbursement policy and coverage determinations, and Richard Doren represents health insurers and plan administrators in federal and state courts. Winston Chan is a key contact for advice on FCA and healthcare fraud enforcement matters in the San Francisco office.

Groom Law Group, Chartered advises health insurers and managed care organizations on regulatory, compliance, and policy matters affecting the design, administration, and regulation of health insurance products. The Washington DC-based practice is led by a quartet of co-heads: Kathryn Bjornstad Amin, who is highly skilled in health plan regulatory compliance; Lisa Campbell, who excels in matters involving ACA, Medicare, and Medicaid compliance; Seth Perretta, a trusted advisor on ERISA and health insurance tax compliance; and Tammy Killion, whose strengths lie in ACA compliance and government enforcement matters. Key figures in the wider team include Xavier Baker, active in managed care regulatory work; Jon Breyfogle, whose expertise spans ERISA and ACA health insurance regulation; Christy Tinnes, well-versed in HIPAA privacy compliance; Malcolm Slee, experienced in ACA health plan compliance; and Ryan Temme, distinguished by his knowledge of mental health parity compliance.

Latham & Watkins is well equipped to represent payors in civil and criminal healthcare fraud investigations, False Claims Act and qui tam litigation, internal investigations and compliance matters, and to advise on Medicare and commercial reimbursement, coding, and coverage issues, including disputes before CMS and its contractors. The practice is led from the Washington, D.C., and Chicago offices. Washington, D.C.–based co-heads include disputes specialist John Manthei;Ben Haas, who focuses on FDA regulatory compliance; and Jason Caron, who advises on healthcare reimbursement matters. Chicago-based co-head Terra Reynolds specializes in healthcare fraud and enforcement defense. The Washington, D.C., office also features Daniel Meron, who is noted for his expertise in healthcare regulatory enforcement and fraud investigations. In Boston, Daniel Meron specializes in fraud and government investigations.