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Dr. Mark Case, MD

Dr. Mark Case, MD

Age 57 Family Medicine M
Star rating icon (74) 74 reviews
Accepting New Patients


Dr. Mark Case, MD is a family medicine specialist in Middletown, DE. Dr. Case completed a residency at Christiana Hlth Care Systems. He currently practices at ENT & Allergy of Delaware and is affiliated with Bayhealth Hospital, Kent Campus. He accepts multiple insurance plans, including Medicare. Dr. Case is board certified in Family Practice.


  • Primary Care Sports Medicine Fellowship, Christiana Care Health Systems, Fellowship Hospital — 1999
  • Christiana Hlth Care Systems, Residency Hospital — 1998
  • William Beaumont Army Medical Center, Internship Hospital — 1991
  • Captain, Us Army Medical Corps, Other Education — 1991
  • Thomas Jefferson University, Medical School — 1990
  • Yale University, Undergraduate School — 1986

Insurance Accepted

  • Admar
  • Aetna
  • Amerihealth
  • Anthem Blue Cross Blue Shield
  • Applied Risk Management Solutions
  • Beech Street (Multiplan)
  • Blue Cross Blue Shield
  • Bluegrass Family Health
  • Bureau of Workers' Compensation (BWC)
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • Commercial Insurance Company
  • Concentra
  • Connecticomp
  • CopperPoint Mutual
  • CorVel
  • Coventry Health Care
  • Delphi
  • Evolutions Healthcare Systems
  • First Health (Coventry Health Care)
  • Galaxy Health Network
  • Health Net
  • HealthSmart - Interplan Health Group
  • HFN
  • Horizon Blue Cross Blue Shield of New Jersey
  • Independence Blue Cross
  • Medicare
  • MedRisk
  • MultiPlan
  • One Call Care Management
  • Reviewco
  • Sedgwick Claims Management Services
  • Tricare
  • UnitedHealthCare
  • USA Managed Care Organization
  • Virginia Health Network
  • Washington State Department of Labor & Industries
  • Worker's Compensation

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I have been a patient of Dr Case for about 16 or 17 years. He is caring, compassionate and most especially knowledgeable. He has always makes time to answer my 15 million questions and talks to me about options that I have. I have never considered going to another doctor. The current staff has been with him for quite a while. Monica always answers the phone and is pleasant and helpful. She always has a smile when I come in the office.
Salena Stokley — Jul 21, 2021
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Photo: Dr. Mark Case, MD
Dr. Mark Case, MD
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Frequently Asked Questions

Dr. Case frequently treats Headache, All Headaches (incl. Migraine), and Hypertension.  

Find contact information here to make an appointment.

Hospital Affiliations

  • Bayhealth Hospital, Kent Campus
  • Christiana Hospital


  1. ENT & Allergy of Delaware

    1. 1
      Christiana Care Occupational Health Services
      124 Sleepy Hollow Dr Ste 200, Middletown, DE 19709 (302) 449-1710
  1. Case Family Practice/Sports Med

    1. 2
      Case Family Practice & Sports Medicine
      272 Carter Dr Ste 200, Middletown, DE 19709 (302) 449-1710