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San Luis Dermatology, Inc.

State-of-the-art skin care services, serving the San Luis Obispo area since 1977. 

                                                         Now Accepting New Patients. Our providers accept Medicare.

Welcome to San Luis Dermatology

San Luis Dermatology has been serving the San Luis Obispo area in the person of Dr. Jeffrey Herten since 1977. From one doctor, one nurse, and one front office person practice, the clinic has grown into four physicians, one Physician Assistant, and twenty-five support staff practice, with three office locations in San Luis Obispo County.


From acne to Mohs Micrographic Surgery - San Luis Dermatology 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!

Skin Cancer

Successful treatment of skin cancer requires early detection, comprehensive examination and professional guidance.

Our team

Michael P. Heffernan
Charles B. Fishman
Joseph Diehl
Cheryl Ketelsen
Diplomate Fellow, SDPA

Company News

Accepting New Patients

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.

Company News:
Dr. Heffernan directed the 3rd Annual Santa Barbara Dermatology Meeting in Ojai, CA November 11-14th, 2021.…

Get In Touch

15 Santa Rosa St.

San Luis Obispo, CA. 93401


1551 Bishop St. Ste. 410

San Luis Obispo, CA. 93401


Send Us A Message:

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Please call the office directly for all scheduling inquires and/or urgent medical questions.

Thank you.