Credentials

Practice History

  • Principal, Thallner Law, 2025 — Present

  • Partner, Reed Smith, 1995 — 2024 (29 Years)

  • Senior Associate, Saul Ewing, 1993 — 1995 (3 years)

  • Associate, Drinker Biddle & Reath, 1986 — 1992 (6 years)

Licensed to Practice

  • Pennsylvania

  • New Jersey

  • Arizona

Court Admissions

  • U.S. District Court - Eastern District of Pennsylvania

  • U.S. District Court - District of New Jersey

  • U.S. Court of Appeals - Sixth Circuit

Awards *

  • Ranked Band 1 in Chambers USA for Pennsylvania Healthcare, 2014-2024. Respondents tell Chambers that “Karl is among the best healthcare lawyers … unmatched in the Pennsylvania market,” and “Karl provides very sophisticated counsel while also considering the commercial practicalities of the given scenario.” [Selection methodology]

  • Selected through peer review for inclusion in The Best Lawyers in America© for Health Care Law, 2001-2025, and Qui Tam Law, 2023-2024 [Selection methodology]

  • Received the Best Lawyers™ 2013 Health Care Law "Lawyer of the Year" award in Philadelphia [Selection methodology]

  • Designated as 2009 Outstanding Healthcare Transaction Lawyer in the United States by Nightingale's Healthcare News

  • For each year since 1997, Karl has been awarded the AV® Preeminent rating by the Martindale-Hubbell Law Directory, reflecting the highest possible peer review rating in legal ability and ethical standards [Selection methodology]

*  No aspect of this advertisement has been approved by the Supreme Court of New Jersey.

Education

  • Pennsylvania State University, The Dickinson School of Law, 1986, J.D., cum laude, Editorial Board of the Dickinson Law Review; Woolsack Honor Society

  • Carnegie Mellon University, 1982, M.S., Chemical Engineering

  • Gettysburg College, 1980, B.A., cum laude, Departmental Honors in Chemistry

Community and Industry Involvement

  • Vice Chair of the Board of Trustees of Harcum College, a nonprofit institution of higher education in Eastern Pennsylvania

  • Member of Advisory Board of the health law program at Drexel University School of Law

  • Former Practice Group Leader and d-list moderator of the Teaching Hospitals and Academic Medical Centers practice group of the American Health Lawyers Association