Jonathan M. Grosser

Stephen J. Olsen is a member of Gawthrop Greenwood’s Trusts & Estates Department, practicing in the areas of Estate, Trust Administration, Estate Planning Taxation, and Business Transactions. He is also one of the few Pennsylvania attorneys in private practice with a wide breadth of experience supporting the legal needs of medical marijuana operators. Recently Stephen’s Cannabis Law practice has expanded to provide support to medical marijuana permittees in operation after Pen...

After nearly thirty (30) years of distinguished full-time practice in the area of Construction Law, Margaret Underwood is now Of Counsel to Horn Williamson. During her full-time practice of law, Ms. Underwood provided high-level legal services to local, national, and international owners, contractors, and subcontractors on many of the largest and most prestigious construction projects located in and around the Philadelphia Area and as far away as Europe and the Marshall Islands. Her extensive...

Joe concentrates in state and local taxation, regularly assisting business and individual taxpayers regarding corporate, financial institution, sales and use, income, real estate, transfer, and all other state and local taxes. A former chief counsel of the Pennsylvania Department of Revenue, he has since represented hundreds of taxpayers — including businesses, individuals, and nonprofit entities — in state and local tax planning, administrative, legislative, and litigation matter...

Robert C. Jefferson, IV is a senior associate attorney at Gawthrop Greenwood, PC who focuses his practice on municipal government law, as well as land use, land development and zoning. A former Assistant District Attorney, Jefferson spent six years at the Chester County D.A.’s Office prosecuting 19 jury trials and more than 20 bench trials for criminal cases ranging from felonies to misdemeanors. His career in public service, along with experience navigating the adversarial court system...

Raphael Castro is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. Raphael, who practices law in Philadelphia, Pennsylvania, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Raphael is held by other top lawyers in the same geographic and legal practice area.

Natalie Klyashtorny heads the litigation team at Nochumson P.C. She has played a significant leadership role in the legal community, and has extensive experience as an attorney in the Philadelphia region. Her clients find it reassuring to know that when she walks into a courtroom, she has most likely already appeared before the presiding judge, knows opposing counsel, and understands how to work with them both. Natalie plays an active role in both the real estate and legal communities, and is...

Ellen Goldberg Weiner is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Ellen, who practices law in Philadelphia, Pennsylvania, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ellen is held by other top lawyers in the same geographic and legal practice area.

Rick Holzworth’s practice focuses on fiduciary litigation in administrative proceedings, trial courts, and appellate courts. His clients include individuals, corporate fiduciaries, non-profit entities, and closely-held businesses throughout Pennsylvania and across the country. He has significant experience in a variety of matters involving estates, trusts, guardianships, powers of attorney, and charitable interests. Rick frequently speaks and writes on fiduciary litigation and estate an...

Caleb’s practice focuses on complex environmental litigation and environmental compliance. Caleb has represented clients in state and federal courts and in administrative proceedings. In his environmental litigation practice, Caleb often represents corporate clients in cost recovery, contribution and government enforcement actions under Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Caleb has litigated such matters through trial and has also helped clien...

Fred J. D'Angelo, Jr., concentrates his practice on the representation of management in labor and employment law. His experience includes representation of employers in both traditional labor relations and employment litigation. This experience includes representing employers on union prevention campaigns, collective bargaining negotiations, and labor contract administration. Fred has represented employer clients in virtually all industries, including manufacturing, shipping, transportation, ...