Thomas E. "Tom" Zahn

Area of Emphasis Don Bluedorn’s practice focuses primarily on water and wastewater management, site remediation/ brownfields, and hazardous and non-hazardous waste issues. Because of the technical nature of both the subject matter and his education, Mr. Bluedorn typically works closely with the client, technical consultants, and engineers during all phases of a project’s development. This team approach has been very successful with state and federal regulatory agencies in a number...

Ms. Patchen focuses on medical malpractice defense; contract negotiation and litigation, including litigation of non-compete contracts and representation before state licensing boards, and personal injury litigation. Ms. Patchen has represented specialty groups including: interventional cardiology, OB/GYN, plastic surgery, urology, radiology, interventional radiology, family practice, internal medicine, nephrology, physiatry, orthopedic surgery, ophthalmology, general surgery, cardiothoracic ...

Greg brings a vast knowledge of the medical issues at the core of every malpractice case to each and every client he serves. His litigation experience involves a wide variety of medical malpractice and personal injury matters, including extensive experience litigating professional negligence claims arising from the delayed diagnosis and treatment of treatable medical conditions. Greg feels it is essential to forge a close and trusting relationship with each client. It’s about looking be...

James Killeen is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. James, 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 James is held by other top lawyers in the same geographic and legal practice area.

Area of Emphasis Harley Stone is of counsel in Babst Calland’s Public Sector and Energy and Natural Resources groups. He provides a wide range of services to municipal governments, authorities, and private developers, with an emphasis on municipal permitting, planning, land use, and zoning. A seasoned trial lawyer, Mr. Stone has many years of experience as a litigator in the areas of municipal law, employment law, eminent domain, and tax assessment appeals. Mr. Stone has represented pub...

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 ...

Bob is a senior Shareholder with Dentons Cohen & Grigsby in Pittsburgh, where he previously served as the Chair of the Firm’s 45+ lawyer Litigation Group for five years. Bob is a graduate of Brown University and Columbia University’s School of Law and focuses his practice on complex commercial litigation, banking and lender liability litigation, non-compete/trade secret issues, intellectual property and employment law. He is licensed in both Pennsylvania and California and has...

Karen Baillie is a top attorney recognized by Best Lawyers in the practice area(s) of Education Law, Employment Law - Management and Litigation - Labor and Employment. Karen, 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 Karen is held by other top lawyers in the same geographic and legal practice area.

Area of Emphasis Joe Reinhart is a shareholder and former co-chair of the Energy and Natural Resources Group of Babst Calland. He is also a member of the Firm’s Environmental Group. His environmental practice focuses on areas of environmental law that concern oil and gas well development, chemical plant operations, coal mining and non-coal mining. In addition, Mr. Reinhart’s practice includes the application of state and federal laws governing the disposal of produced waters and o...

Mr. Mahood is a principal in the Pittsburgh firm of Wilder Mahood McKinley & Oglesby. He has written and lectured for numerous continuing legal education programs sponsored by the Pennsylvania and Allegheny County Bar Associations and the Pennsylvania Bar Institute. He is a Past Chair of the Pennsylvania Bar Association Family Law Section and former Chair of its Task Force on Adoption. He is a Member of the Advisory Committee to the Joint State Government Commission on Adoption and has al...