About
Catherine A. Ramsay, MD, FAAD brings an uncommonly wide educational background to her dermatology practice in Ketchum, Idaho. She graduated cum laude in psychology from Pomona College, then earned a Master's degree in Communicative Disorders from Northwestern University. She worked as a Speech Pathologist before returning to school for premedical coursework. Her medical school, internship, and dermatology residency all took place at the University of California, San Francisco, where she also served as Chief Resident in Dermatology.
Dr. Ramsay holds Fellow status in the American Academy of Dermatology and earned membership in both Phi Beta Kappa and the Alpha Omega Alpha medical honor society. She also served as Past President of the Pacific Dermatologic Association. Her clinical focus covers skin cancer, acne, rosacea, hair loss, and a full range of cosmetic treatments. After ten years in private practice and a tenure with the Northern California Permanente Medical Group, she relocated to Sun Valley to establish Ketchum Dermatology. Outside the office, she skis, plays tennis, paints, takes piano lessons, and studies both French and Spanish.
Education & Training
Undergraduate
Pomona College, B.A. Psychology (cum laude)
Medical School
University of California, San Francisco
Residency
Dermatology, University of California, San Francisco (also served as Chief Resident in Dermatology)
Additional Training
Master's degree in Communicative Disorders, Northwestern University; worked as Speech Pathologist prior to medical school; completed premedical courses before medical school
Certifications
Conditions Treated
Who is Dr. Ramsay right for?
Dr. Ramsay suits patients across a wide spectrum of skin health needs. Adults managing chronic conditions like psoriasis, eczema, rosacea, or hormonal acne find her medical dermatology focus directly relevant. Patients concerned about skin cancer, moles, or melanoma benefit from her surgical dermatology training at UCSF. Those seeking cosmetic results, including wrinkle reduction, injectables, or laser treatments, will find a full range of options. Her direct pay model works well for patients who prefer clear, upfront pricing over insurance billing.
Frequently Asked Questions
Dr. Ramsay treats a broad range of skin conditions. On the medical side, she handles acne, rosacea, eczema, psoriasis, hair loss, alopecia, melasma, vitiligo, shingles, skin infections, and nail fungus. She also evaluates and treats skin cancers, including melanoma, as well as moles, warts, and skin tags.
Dr. Ramsay holds Fellow status in the American Academy of Dermatology, designated by the FAAD credential. She also earned membership in Alpha Omega Alpha, the medical honor society, during her training at the University of California, San Francisco.
Dr. Ramsay completed her medical school, internship, and dermatology residency at the University of California, San Francisco. UCSF also selected her to serve as Chief Resident in Dermatology during her residency.
Dr. Ramsay offers a full suite of cosmetic treatments. These include Botox, Dysport, and dermal fillers such as Kysse, Juvederm Ultra, Juvederm Ultra Plus, and Sculptra. 0 micro-coring procedures.
Dr. Ramsay holds a Master's degree in Communicative Disorders from Northwestern University and worked as a Speech Pathologist before pursuing medicine. She completed her undergraduate degree cum laude in psychology at Pomona College. This background informs her patient communication style and approach to care.
Dr. Ramsay served as Chief Resident in Dermatology at UCSF and later as Past President of the Pacific Dermatologic Association. These roles reflect her long record of engagement within the dermatology field alongside her clinical work.
Dr. Ramsay spent ten years in private dermatology practice before joining the Northern California Permanente Medical Group. She then relocated to Sun Valley, Idaho, where she established Ketchum Dermatology to serve patients in the Wood River Valley.
Yes, skin cancer evaluation and treatment is a core part of Dr. Ramsay's clinical work. She evaluates moles, performs cryosurgery, and treats melanoma along with other skin cancers. Patients with concerns about changing lesions or sun damage should schedule a medical dermatology appointment.
Doctor profile last updated August 17, 2026