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Current Endocrinology Fellows


Alheli Arce-Gastelum

Medical School: University of Baja California 
Residency: Creighton University Professional 
Interests: Diabetes, metabolic bone disease, and transgender care 
Hobbies: going on walks with my dog, barre, cooking


Jimmy Mao, MD

Medical School: Keck School of Medicine of USC
Residency: Mayo Clinic, Rochester Professional
Interests: adrenal, thyroid, bone, diabetes, medical education
Hobbies: basketball, fantasy sports, board games, traveling, spending time with family


Johanna Gerwer, MD MPH

Medical School: Texas Tech Paul L Foster SOM
Residency: University of Texas Health Science Center at Houston 
Professional Interests: General Endocrine
Hobbies: Hiking, Performing Arts, Family


Kelly Engle, MD

Medical School: University of South Carolina
Residency: Medical University of South Carolina Professional
Interests: General Endocrinology, Diabetes
Hobbies: Going to the beach, running, exploring new restaurants, hiking with my dog Maple


 Robert Thomas, MD PhD

Medical School: UC San Diego
Residency: UC San Diego
Professional Interests: Mitochondrial metabolism, diabetes, autophagy, bone disease, vitamin D
Personal Interests: History, cooking  Hobbies: Violin, tenor banjo, cycling, gardening







UC San Diego Fellows go on to a broad range of careers. Recent fellows have taken positions at UCSF, Tufts, UC San Diego, Amylin Pharmaceuticals, and Quintile CRO. View our list of past fellows.