David T. Ahn, MD

New Patients

David T. Ahn, MD


Internal Medicine


  • Hoag Physician Partners


  • English

About Dr. Ahn

Dr. David Ahn is an Endocrinologist with a focus in Diabetes and Metabolism and currently serves as Chief of Diabetes Services at Hoag. He previously was an Assistant Clinical Professor at UCLA. Born and raised in Southern California, Dr. Ahn received his Medical Degree and completed a fellowship in Endocrinology at UC San Diego.

He is passionate about empowering people with type 1 diabetes, type 2 diabetes, pre-diabetes and gestational diabetes to optimize their blood sugar control while minimizing the emotional burden of living with chronic disease. He has an interest in diabetes technology, including continuous glucose monitors, insulin pumps and smartphone apps.


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National Provider ID (NPI): 1184949570


  • Medical Education - University of California, San Diego (Medical Doctor)
  • Internship - Scripps Mercy (Internal Medicine)
  • Residency - Scripps Mercy (Internal Medicine)
  • Fellowship - University of California San Diego Medical Center (Endocrinology, Diabetes & Metabolism)

Board Certification

  • American Board of Internal Medicine - Internal Medicine
  • American Board of Internal Medicine - Endocrinology, Diabetes and Metabolism


  • Hoag Physician Partners

Area of Focus

  • Endocrinology, Internal Medicine