Tucker Arensberg, P.C., a Pittsburgh, Pennsylvania-based law firm, has served local, regional and national clients for over a century. The firm’s entrepreneurial spirit encourages attorneys to help their clients develop and maintain growth and success by using creative problem solving, acute business thinking, and an awareness of developing opportunities within their industries.
Tucker Arensberg, P.C. provides comprehensive legal services to physicians, medical groups, and healthcare organizations across a range of needs—from forming and growing a private practice to navigating employment contracts, regulatory compliance, and practice transitions.
Our attorneys have deep experience advising physicians on:
- Practice formation and governance
- Employment, restrictive covenants, and partnership agreements
- Mergers, acquisitions, and practice sales
- Regulatory matters including HIPAA, Stark Law, and Anti-Kickback compliance
- Licensing, credentialing, and peer review matters
- Telehealth regulations and reimbursement issues\
- Tax and employment benefits
In addition to healthcare law, we also support physicians as individuals by providing guidance in estate planning, asset protection, family law, and employment disputes.
With over 85 attorneys and a collaborative approach, Tucker Arensberg delivers the practical, responsive legal support physicians need to thrive in a complex and ever-changing healthcare environment.
Health Care Lawyers

Adam J. Appleberry drafts and negotiates contracts, represents clients in M&A transactions, and advises on general legal and compliance matters. Adam’s healthcare practice focuses on representing physicians and other healthcare providers. His clients call on him to represent them in practice formation, employment contract reviews, licensing and credentialing issues, HIPAA and other regulatory compliance matters, and in the sale of their practices.

Michael A. Cassidy, a shareholder in the firm’s Business and Finance Group and concentrates his practice in healthcare law. For more than 25 years, Mike has devoted his practice primarily to the representation of physicians and other individual providers. His practice includes the fundamental business transactions relating to the formation and governance of healthcare entities, including PCs, LLCs, non-profit corporations, partnerships, medical staff and credentialing issues, and integrated delivery systems. Mike has extensive experience in third-party reimbursement, managed care contracting, fraud and abuse, corporate compliance, tax-exempt organization issues, HIPAA, and transaction issues.

Jerry J. Russo is an experienced criminal defense attorney who represents physicians facing high-stakes investigations, prosecutions, and disciplinary actions involving healthcare-related federal crimes. With decades of experience in white collar defense, Jerry defends healthcare providers accused of Medicare and Medicaid fraud, False Claims Act violations, Stark Law and Anti-Kickback Statute breaches, and other complex regulatory offenses. He also represents physicians in professional licensure actions before state medical boards, helping them preserve their ability to practice. A former Senior Deputy District Attorney and longtime leader of a criminal law practice, Jerry is a trusted advocate for doctors navigating government investigations, pre-indictment negotiations, grand jury proceedings, and trials in both state and federal court. He understands the legal and reputational risks at stake for physicians and provides strategic, discreet, and aggressive defense with a deep understanding of the healthcare landscape.

Paul J. Welk focuses his practice in the areas of business and corporate law and healthcare law. In this capacity, Paul represents physical therapists, physicians, dentists, not-for-profit organizations, professional organizations, closely held corporations, and other healthcare providers. He regularly advises clients on issues related to mergers and acquisitions, regulatory compliance matters, contract negotiation, risk management, and other related corporate and healthcare matters.

Barbara A. Zemlock is a seasoned advocate for physicians facing professional licensing challenges, investigations, and disciplinary proceedings. With over 30 years of experience representing professionals in high-stakes legal matters, Barb helps physicians protect their licenses and reputations when facing complaints, criminal charges, or regulatory scrutiny. She regularly appears before Pennsylvania state licensing boards and has secured favorable outcomes for doctors whose licenses were at risk due to alleged criminal conduct, ethics violations, or administrative missteps. Drawing on her background as a Chief Deputy Public Defender and her appellate experience before the Pennsylvania Supreme Court, Barb provides strategic, tenacious defense rooted in a deep understanding of how licensing decisions intersect with criminal, administrative, and healthcare law. Whether navigating a state investigation, responding to board inquiries, or pursuing license reinstatement, Barb delivers the skilled representation physicians need to continue practicing.