Professional Biographies

Lancaster General Health leaders bring a strong commitment and a diverse array of backgrounds and talents to advance the health and well-being of our communities.


  • John J. Herman headshot

    John J. Herman, MBA, FACHE

    Chief Executive Officer

    Penn Medicine Lancaster General Health

  • headshot of Michael Barber

    Michael Barber

    Chief Operating Officer

    Penn Medicine Lancaster General Health

  • headshot of Kay Brady

    Kay A. Brady

    Chief Human Resources Officer

    Penn Medicine Lancaster General Health

  • Margaret Costella headshot

    Margaret F. Costella

    Senior Vice President and General Counsel

    Penn Medicine Lancaster General Health

  • Gary Davidson headshot

    Gary Davidson

    Senior Vice President and Chief Information Officer
    Associate Chief Information Officer, Information Services Integrated Solutions

    Penn Medicine Lancaster General Health
    Penn Medicine

  • Geoffrey Eddowes headshot

    Geoffrey Eddowes

    Senior Vice President and Senior Operating Officer, Women & Babies Hospital

    Penn Medicine Lancaster General Health

  • headshot of Tammy Ober

    Tammy L. Ober

    Chief Growth Officer

    Penn Medicine Lancaster General Health

  • Michael Ripchinski headshot

    Michael R. Ripchinski, MD, MBA, CPE, FAAFP, FACHE

    Chief Physician Executive

    Penn Medicine Lancaster General Health

  • Tim Zellers, MBA, MSN, CRNP

    Tim Zellers, MBA, MSN, CRNP

    Chief Nursing Officer

    Penn Medicine Lancaster General Health

  • Gary Welch Headshot

    Gary A. Welch

    Chief Financial Officer

    Penn Medicine Lancaster General Health

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