Diana C. Castro HealthcareRegulatoryShares Client PhilosophyWomen

Diana C. Castro

Diana focuses her practice on the healthcare industry, advising clients on transactional matters, mergers, acquisitions, private equity transactions and healthcare regulatory compliance matters. Her practice includes advising healthcare providers, sponsors, and lenders to the healthcare industry. In representing healthcare providers, Diana works with hospitals, ambulatory surgery centers, dental services organizations…
tthorp
August 20, 2025
Joseph J. Centeno Labor & Employment

Joseph J. Centeno

Joe Centeno chairs the firm's Labor, Employment, Benefits & Immigration Section, and he is a nationally recognized leader in labor and employment law. His practice includes high stakes collective and class action litigation, including Fair Credit Reporting Act, employment litigation, #MeToo claims, restrictive covenants, labor relations, policies, leave, termination of…
BTIConsulting
May 29, 2024
John W. Cerreta AppellateMass TortsShares Client Philosophy

John W. Cerreta

John Cerreta, a litigator and member of the firm's Appellate Practice, represents clients in complex tort and product liability cases, insurance coverage disputes and class actions. Clients rely on John to handle their most complex appeals and critical motions. He has briefed and argued numerous appeals in the Second Circuit,…
tthorp
December 9, 2021
Brian G. Cesaratto Cybersecurity & PrivacyLitigationShares Client Philosophy

Brian G. Cesaratto

Brian Cesaratto focuses his practice on cybersecurity and data privacy, computer and electronic data misappropriation, breach and forensics, technology agreements and software licensing, internal and law enforcement investigations, and litigation. Brian is a Certified Information Systems Security Professional (CISSP). He was awarded this information technology security audit certification by the…
tthorp
February 7, 2022
Hannah Y. Chanoine Class ActionsWomen

Hannah Y. Chanoine

As Co-Chair of O’Melveny’s Consumer Class Actions Practice, Hannah Chanoine focuses on defending and advising companies in a diverse range of class action matters in the trial and appellate courts. Hannah began her career clerking for the Hon. Sonia Sotomayor on the Second Circuit Court of Appeals, and then served…
tthorp
December 9, 2021
Ron Chapman, Jr. Labor & EmploymentMVPsShares Client Philosophy

Ron Chapman, Jr.

Ron is a nationally recognized corporate defender and zealous advocate in high-stakes labor and employment litigation, appeals, and proceedings before the EEOC, NLRB, and other governmental agencies. Ron previously served on the firm's Board of Directors, and he is exceptional at marshalling the firm's significant resources and coordinating work throughout…
tthorp
December 9, 2021