The UF Health Weight Loss Surgery Center is a certified center of excellence. UF Health fellowship-trained bariatric surgeons collaborate with UF Health experts from psychiatry, cardiology, pulmonology, medicine, nephrology, endocrinology and nutrition as they strive to identify and resolve the extensive health problems associated with morbid obesity.

Bariatric Team

Jeffrey FriedmanJeffrey Friedman, MD
Director and Bariatric Surgeon
Alexander Ayzengart Alexander Ayzengart, MD
Bariatric Surgeon
Crystal Johnson-Mann, MDCrystal Johnson-Mann, MD
Bariatric Surgeon
  • Gwen Crispell, RN,MSN, CBN
    Bariatric Nurse Coordinator
  • Tamara Lux, PA-C
    Physician Assistant
  • Stephanie Stevens
    Schedule Coordinator
  • Tina Adams
    Schedule Coordinator
  • Kyle Hazen, RD
    Registered Dietitian 

Anesthesia & Critical Care



Neurology/Sleep Medicine

Nutritional Services

  • Kristin Drake, RD
  • Kyle Hazen, RD

Pediatric Endocrinology

Pediatric Surgery

Plastic Surgery


  • Allison Holgerson, Ph.D.