124 E. Olive Ave
Redlands, CA 92373
(909) 798-9403



The first thing people notice is our lovely turn of the century office. Built in 1908 it was remodeled by Dr. Trenkle in 1993 and built exactly to her specifications. Truly a one of a kind building it houses the Dermatology practice as well as Dr. Trenkle's Pathology lab.

We also share the office with Dr. Collins, an amazing plastic surgeon.

Professional Associations

  • American Medical Association
  • American Academy of Dermatology
  • American Society for MOH's Surgery
  • Women's Dermatological Society
  • California Society of Dermatology and Dermatologic Surgery
  • American Society for Laser Medicine & Surgery
  • San Bernardino County Medical Society
  • American Society of Dermatopathology
  • International Society of Dermatopathology



Hours of Operation

Monday – 8 A.M. - 5 P.M.
Tuesday – 8 A.M. - 5 P.M.
Wednesday – 8 A.M. - 5 P.M.
Thursday –  8 A.M. - 5 P.M.
Friday – 8 A.M. - 5 P.M.

We are closed on weekends

We offer a wide variety of medical and cosmetic dermatology as well as dermatologic pathology. Please look at our various options on the menu's above for descriptions of procedures and diseases we treat.