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David D. Hagaman MD

Assistant Professor of Medicine

Areas of Expertise

  • Allergy and Immunology
  • NSAID Allergy
  • Pulmonology
  • Severe 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.
Good experience overall
August 15, 2026
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Doctor Hagaman was very thorough in explaining what is happening with my allergies and histamine issues. He offered practical applications and medication to help alleviate symptoms. He also recommended further testing to help determine the underlying cause(s) of histamine response. Thank you :)
August 13, 2026
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Is always very friendly. Takes all the time needed for my concerns to be heard. Always uses shared clinical decision making with care. Remembers who I am/ reviews my chart well before coming in to exam room.
August 13, 2026
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The discernment and capacity for the complexity of my case was appropriately managed. Most impressive.
August 11, 2026
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No complaints. Doctor is always helpful and explains the medical condition(s) in an easy way to understand and comprehend.
August 8, 2026
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I'm so analytical and asked so many questions and everybody was so kind and helpful. Thank you for putting up with me and all my questions and answering everything so thoroughly.
August 8, 2026
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Excellent experience very good doctor
August 6, 2026
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He helped me more than the urology staff who have not been able to help me with my bladder problem for 3 1/2 years. He is an allergist and suggested an allergist's approach to my bladder issues. So far I have seen some improvement.
August 1, 2026
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Dr Hagaman listens attentively and is very engaged with my care. I'm impressed with his summary notes after our visit. He captures my experiences and concerns perfectly.
July 31, 2026
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