3434 47th Street Suite 200, Boulder, CO 80301

Our K2 Derm Doctors

Dr. Cathy Koger is a board certified dermatologist and a fellow of the American Academy of Dermatology as well as a fellow of the American Osteopathic Board of Dermatology. Dr. Koger graduated with a BSE in Mechanical Engineering from the University of Michigan and worked as an engineer for over 6 years at Raytheon Systems Company and IBM.

Dr. Cathy Koger

Cathy Koger, D.O. is a board certified dermatologist and a fellow of the American Academy of Dermatology as well as a fellow of the American Osteopathic Board of Dermatology.
Dr. Kallgren’s love and enthusiasm for medicine and her patients convinced Dr. Koger to retire at an early age from engineering and pursue medical school. She was one of the first

Further Details »
William C. Fix, M.D. is a board certified dermatologist and a fellow of the American Academy of Dermatology. Dr. Fix graduated from Brown University with BA degrees in economics and classics, where he also competed on the Division I men's lacrosse team. He earned his MD from the Perelman School of Medicine at the University of Pennsylvania, where he was awarded the John R. Stanley Research Prize for Dermatology and the Alex's Lemonade Stand David M. Cohn Scholar Award. During his time at Penn, he led a student-run medical clinic serving homeless and underserved populations in West Philadelphia and completed a Research Fellowship in Dermatology Oncology & Dermatologic Surgery.

Dr. William C. Fix

William C. Fix, M.D. is a board certified dermatologist and a fellow of the American Academy of Dermatology. Dr. Fix graduated from Brown University with BA degrees in economics and classics. He earned his MD from the Perelman School of Medicine at the University of Pennsylvania, where

Further Details »

K2 Monthly Specials 2025

APRIL:

25% Off REVISION® Products

MAY:

25% Off eltaMD® Products

JUNE:

25% Off Latisse®

JULY:

25% Off Heliocare and Strataderm/Stratamed

AUGUST:

20% Off Botox (20 units minimum)