---
title: "David Callans | Cardiovasc. Disease and Clinical Cardiac Electrophysiology Expert Witness | Deep Research and Background Information on Experts"
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  "og:description": "David John Callans is an expert witness in Cardiovasc. Disease and Clinical Cardiac Electrophysiology. View detailed background information and comprehensive legal research data."
  "og:title": "Experts | Expert Witness Profiler | Deep Research and Background Information on Experts"
  description: "David John Callans is an expert witness in Cardiovasc. Disease and Clinical Cardiac Electrophysiology. View detailed background information and comprehensive legal research data."
---

### **Results for: ** David John Callans

# **David John Callans**

Cardiovasc. Disease, Clinical Cardiac Electrophysiology

Philadelphia, Pennsylvania

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Expert Details

**Dr. David John Callans M.D.** is an expert witness in the field of **Cardiovasc. Disease, Clin. Card. Electrophys.**. Some of the cases where David Callans has been retained as an expert witness are **In Re: Xarelto® Litigation**.  Dr. David John Callans M.D. has been involved in cases related to Wrongful Death etc. in the past. These cases have been in front of judges such as Michael E. Erdos in Court of Common Pleas of Pennsylvania.  This is only a representative list of cases where David Callans has been involved and more information is available in our Expert Witness Profiles and Expert Challenge Study. These include details about whether the testimony was challenged or not, which party retained the expert, who were the attorneys representing the parties in the case. Dr. David John Callans M.D. is an electrophysiology expert witness from Pennsylvania. He completed his A.B. in Biology in 1982 from the University Of Chicago and then complted his M.D. in 1986 from the Johns Hopkins School Of Medicine. He further completed his rewsidency and fellowship form the Hospital of the University of Pennsylvania. Dr. Callans has a physician's license from the state of Pennsylvania and is certified by the American Board of Internal Medicine.