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David D. Hagaman MD

Assistant Professor of Medicine

Areas of Expertise

  • Allergy and Asthma

Languages

  • English

Education

  • Doctor of Medicine - Ohio State University, 1987
  • Internship - Medical University of South Carolina, 1988
  • Residency - Ohio State University Medical Center, 1990
  • Fellowship - Ohio State University Medical Center, 1993
  • Fellowship - Vanderbilt University Medical Center, 1995
  • Fellowship - National Institutes of Health, 2001

Board Certifications

  • Allergy and Immunology - American Board of Allergy and Immunology, 1995

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Patient Comments

Patient Comments are gathered from the Press Ganey Patient Experience Survey and displayed in full. Patients are not identified in order to respect patient privacy.
He is the most knowledgeable and caring doctor I have ever had.
February 21, 2026
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Dr Hagaman listens carefully and offers thoughtful responses
February 21, 2026
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Dr Hagaman is the best. He knows his stuff and takes time to listen. He exudes empathy and compassion.
February 14, 2026
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Great listener
February 12, 2026
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Dr. Hagaman was outstanding. Very knowledgeable and caring
February 5, 2026
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I was very impressed with Dr. Hagaman. He was knowledgeable, thorough and pleasant!
February 5, 2026
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Dr. Hagaman is possibly my favorite doctor. He truly cares and is so very kind. Despite having my medical condition, I honestly enjoy my appointments with him
January 22, 2026
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Very attentive and informative visit with the physician.
January 22, 2026
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Dr. Hagaman is genuinely one of the best allergists I have ever met with. He is understanding of how hard the dietary and lifestyle changes can be, and he works with you where you're at. He is supportive and determined to get you to a place where you can live well and comfortably despite why you're seeing him in his office. He gave me the space to heal and helped me reach a place where I can say I have my life back. It's not ruled by constant reactions. I don't feel powerless or hindered by my allergies. He empowers patients to listen to their body and ensures all bases are covered along the way.
January 17, 2026
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