William G. "Bill" Merchant

Mr. Baum is a Founding Member and President of Baum O’Connor Cullen Chmiel. For more than 40 years, Mr. Baum has focused his practice on the representation of physicians, nursing homes, and other healthcare providers, particularly in the defense of medical malpractice lawsuits, and in related contract and employment litigation. Mr. Baum has extensive trial experience, having tried over 100 cases in his career. Mr. Baum also represents healthcare professionals in administrative matters i...

Christopher Jacobs is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law, Litigation - Insurance and Personal Injury Litigation - Defendants. Christopher, who practices law in Pittsburgh, Pennsylvania, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher is held by other top lawyers in the same geographic and legal practice area.

Pittsburgh family lawyer Meghan L. Zupancic is trained and certified in collaborative family law, providing clients with superior representation for challenging family law issues and support through what is often the darkest time of their lives. Meghan strives to understand her clients and their goals and provide open communication to help them feel informed and confident throughout the legal process. She imparts clients with knowledge to help them successfully resolve a variety of family law...

Sunshine R. Fellows is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Sunshine R., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sunshine R. is held by other top lawyers in the same geographic and legal practice area.

A business litigator and environmental lawyer, Anthony has represented business clients in significant cases presenting issues involving unfair competition, corporate governance, Sherman and Clayton Act violations, breach of fiduciary duty, fraudulent conveyance, securities fraud, trademark protection, insurance coverage, construction litigation, legal malpractice, commercial real estate, and contract matters. He also has acted as outside general counsel to a publicly-held real estate develop...

John W. Lewis II is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Governance Law and Mergers and Acquisitions Law. John W., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John W. is held by other top lawyers in the same geographic and legal practice area.

A seasoned litigator, Dick has argued cases in the United States Supreme Court, Third, Sixth, and Eighth Circuit Courts of Appeals, and the Pennsylvania Supreme, Superior, and Commonwealth Courts. He has successfully handled a variety of complex ERISA cases and has managed civil cases involving employment issues, general commercial transaction claims, trusts & estates , letters of credit, insurance coverage, and workers’ compensation. Dick concentrates his practice in the field of l...

Mr. O’Connor has been a member of the firm for 20 years. His practice is devoted to the representation of physicians and hospitals in medical malpractice cases. Brian also represents health care providers in litigation before the Pennsylvania State Board of Medicine. Mr. O’Connor has tried over 45 jury trials on behalf of physicians and hospitals throughout the counties of Western Pennsylvania and the Federal District Court in Pittsburgh and Erie. Mr. O’Connor has participat...

Shelly R. Pagac is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Shelly R., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Shelly R. is held by other top lawyers in the same geographic and legal practice area.

Michael A. Cassidy, Esq. Mike is a healthcare lawyer focusing on compliance, credentialing, peer review, reimbursement, contracts, HIT, HIPAA, and telehealth issues for physicians. Health Information Technology (HIT) : Electronic health records, telehealth and telemedicine, and licensing Reimbursement : Medicare and third party payment, managed care contracting, business structures, and joint ventures Compliance : Anti-kickback, Stark, audits, and investigations Credentialing : Medical staff ...