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Dr. Dennis Cullen, MD

Dr. Dennis Cullen, MD

Age 64 Internal Medicine M
(15) 15 reviews

Telehealth available


Dr. Dennis Cullen, MD is a internal medicine specialist in Bethesda, MD. Dr. Cullen completed a residency at Georgetown University. He currently practices at Cullen Umosella Cullen & Cullen and is affiliated with Sibley Memorial Hospital. He accepts multiple insurance plans. Dr. Cullen is board certified in Internal Medicine.


  • Georgetown University, Residency Hospital — 1985
  • Dartmouth-Mary Hitchcock, Internship Hospital — 1983
  • Georgetown U, School of Medicine, Medical School — 1982

Insurance Accepted

  • Aetna
  • Anthem
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • MultiPlan

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  1. Practice

    1. 1
      Cullen Umosella Cullen & Cullen
      7625 Wisconsin Ave Ste 101, Bethesda, MD 20814 Existing Patients: (301) 657-5638

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When I first met Dr. Cullen, he said, “This is a partnership to keep you alive and healthy. I’ll do my part and I’ll expect you to do yours as well “. He is always open to new ideas and his ego is nowhere to be found. A perfect primary care physician.
— Mar 31, 2021
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Dr. Dennis Cullen, MD
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Frequently Asked Questions

Dr. Cullen frequently treats Diabetes Mellitus, Secondary, Vitamin B Deficiency, and Acute Venous Embolism Thrombosis.  

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Hospital Affiliations

  • Sibley Memorial Hospital