Dr. Michael Heffernan, Dr. Joseph Diehl and Cheryl Ketelsen PA-C are accepting new patients. Please call the office at (805) 541-2650 to schedule your new patient appointment today! All of our San Luis Dermatology providers are contracted with Medicare only. Although we’re out of network providers we do accept all patients and can bill most all PPO plans as a courtesy.
San Luis Dermatology & Laser Clinic
State of the art skin care services, serving the San Luis Obispo area since 1977.

Welcome to San Luis Dermatology & Laser Clinic
The San Luis Dermatology and Laser Clinic has been serving the San Luis Obispo area in the person of Dr. Jeffrey Herten since 1977. From one doctor, one nurse, one front office person practice, the clinic has grown into four physicians and twenty-five support staff practice, with two locations in San Luis Obispo.
Services
From acne to hair removal to topical chemotherapy - San Luis Dermatology and Laser Clinic does it all!

General Treatment
San Luis Dermatology has the experience and capacity to treat a wide range of common skin conditions. We look forward to helping you!

Laser Treatments
We own and operate five state-of-the-art laser and light devices for successfully treating a variety of conditions.

Skin Cancer
Successful treatment of skin cancer requires early detection, comprehensive examination and professional guidance.
Our team

R. Jeffrey Herten
M.D.

Michael P. Heffernan
M.D., FAAD

Charles B. Fishman
M.D.

Joseph Diehl
M.D., FACMS, FAAD

Cheryl Ketelsen
Diplomate Fellow, SDPA
Company News

Company News:
Dr. Heffernan directed the 3rd Annual Santa Barbara Dermatology Meeting in Ojai, CA November 11-14th, 2021.…
New Systemic Treatments for Psoriasis Panel
Dr. Michael Heffernan was invited to direct the New Systemic Treatments for Psoriasis Panel at the…
Dr. Heffernan interviewed by The Dermatology Times
Dr. Heffernan interviewed by The Dermatology Times about the Use of Biologic Medications to treat…