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John P. Rafferty

620 Freedom Business Center
Suite 300
King of Prussia, PA 19406
(610) 354-8265
(610) 354-8299 - Fax

As a member of the Health Care Department, John focuses his practice on the defense of health care professionals and facilities.

John received his juris doctor from the Pennsylvania State University, Dickinson School of Law. During his time at law school, John worked on the Penn State Journal of Law and International Affairs as an articles editor. While attending law school, he served as judicial extern to the Honorable Judge William Caldwell in the Middle District of Pennsylvania, and also interned with the New Jersey Office of the Attorney General. John also sat on the advisory boards for Penn State Student Legal Services and the Centre Volunteers in Medicine, a local free medical clinic serving the residents of Centre County. John joined Marshall Dennehey as a law clerk in 2015, where he started in the firm's Summer Associate program and continued throughout his final year of law school.

Prior to attending law school, John graduated from St. Joseph's University with a concentration in Economics. He was inducted as a member of Omicron Delta Epsilon, the international economics honor society. Additionally, he worked with faculty of the Economics Department in a research opportunity studying the effects of international patent infringement cases on market prices. John also worked as an intern for a local law firm. 

John is a member of the Pennsylvania Bar Association, New Jersey Bar Association and Montgomery Bar Association. He also participates in the Montgomery American Inn of Court.

Published Works


  • Dickinson School of Law, Pennsylvania State University, Carlisle, PA (J.D., 2016)

  • Saint Joseph's University, Philadelphia, PA (B.S., 2013)

    Honors: Omicron Delta Epsilon, Economics Honor Society

Law Alerts October 1, 2019
In this recent decision by the Pennsylvania Supreme Court, it was ruled that evidence of the risks and complications of a surgery may be admissible at trial. The care at issue involved a laparoscopic hysterectomy, which resulted in a cut in the..., Case Law Alerts, 4th Quarter, October 2019 Case Law Alerts is prepared by Marshall Dennehey Warner Coleman & Goggin to provide information on recent developments of interest to our readers. This publication is not intended to provide legal...
Law Alerts April 1, 2019
The Pennsylvania Supreme Court was faced with the issue of whether the plaintiff satisfied the discovery rule as to toll the running of the statute of limitations in her medical malpractice action. The plaintiff had been bitten by a tick and began..., Case Law Alerts, 2nd Quarter, April 2019 Case Law Alerts is prepared by Marshall Dennehey Warner Coleman & Goggin to provide information on recent developments of interest to our readers. This publication is not intended to provide legal advice...

Areas of Practice


  • Dickinson School of Law, Pennsylvania State University (J.D., 2016)
  • Saint Joseph's University (B.S., 2013)

Bar Admissions

  • Pennsylvania, 2016
  • New Jersey, 2016

Associations & Memberships

  • Montgomery County Bar Association
  • Montgomery Inn of Court
  • New Jersey Bar Association
  • Pennsylvania Bar Association

Year Joined Organization: 2016

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