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Dr. William Duffy, MD

Dr. William Duffy, MD

Age 53 Internal Medicine M
(5) 5 reviews

Telehealth available


Dr. William Duffy, MD is a internal medicine specialist in Radnor, PA. Dr. Duffy completed a residency at Thos Jefferson University Hospital. He currently practices at Clinical Prac of Penn Med At Radnor and is affiliated with Hospital of the University of Pennsylvania. He accepts multiple insurance plans. Dr. Duffy is board certified in Internal Medicine.

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  1. Practice

    1. 1
      Clinical Prac of Penn Med At Radnor
      250 King of Prussia Rd, Radnor, PA 19087 Existing Patients: (610) 902-5600
    2. 2
      Penn Medicine Valley Forge
      1001 Chesterbrook Blvd, Berwyn, PA 19312 Existing Patients: (610) 576-7515


  • Thos Jefferson University Hospital, Residency Hospital
  • Georgetown University School Of Medicine, Medical School — 1993

Insurance Accepted

  • Amerihealth
  • Anthem
  • Blue Cross Blue Shield
  • Capital Blue Cross
  • CareFirst Blue Cross Blue Shield
  • Geisinger Health Plan
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • MultiPlan
  • QualCare

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I was extremely impressed with Dr. Duffy. I needed a new primary care doctor as mine had relocated. Dr. Duffy was very personable and easy to talk with--he showed a high level of interest in everything that we discussed and I never felt hurried. He spent an hour with me on this initial visit and I left feeling in very good medical hands.
Estelle M. in Philadelphia, PA — Mar 12, 2016
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Photo: Dr. William Duffy, MD
Dr. William Duffy, MD
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Hospital Affiliations

  • Hospital of the University of Pennsylvania
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