Personalized care from a team who’s passionate about your health.
Susan M. Sleep, MD
Board-certified in Internal Medicine and Aesthetic Medicine, Dr. Sleep has been practicing medicine since completing her medical degree in 1988 at USC’s Keck School of Medicine. Her Internal Medicine training at St Mary/Harbor UCLA was 1988-1991. She joined a small internal Medicine private practice in 1991 with Dr. Deborah Rightmier, Dr. Patricia Ahearn and Dr. Sarah Sandell. In 2000, Dr. Sandell and Dr. Sleep continued their private practice until Dr. Sandell’s retirement in March of 2025.
Jack Kennis, MD, FACEP
A graduate from the UCI School of Medicine and the UCI Irvine Medical Center Internal Medicine Internship Residency program, Dr. Kennis is board-certified in Emergency Medicine and Internal Medicine. A practicing physician for over 35 years, Dr. Kennis has treated patients in leading trauma centers and emergency departments across multiple states. He belongs to the American Academy of Emergency Physicians and serves as a clinical instructor for Internal Medicine at UCIMC.
Katelyn Stults, FNP-BC
A licensed and board-certified Family Nurse Practitioner, Ms. Stults is a valued member of our medical dermatology and cosmetic team. In addition to staffing our Mobile Skin Solutions clinic, Ms. Stults works alongside Dr. Sleep to conduct dermatological assessments, perform a range of dermatological and cosmetic procedures. She coordinates pre- and post-treatment patient care, and educates our patients on proper skincare and prevention and also performs Morpheus8 and photo dynamic therapy treatments.
Diana Rios, RN, MSN, NP-C
Diana Rios calls on over ten years of experience in acute care nursing, family medicine, and women’s health in her role as an integral member of our care team. Prior to joining our practice, Ms. Rios served as a Family Nurse Practitioner at Chapman University’s Student Health Center as well as in private practice. She holds a California Board of Registered Nursing license, is a Certified Medical Examiner, and has a certification from the American Association of Nurse Practitioners Board. Her expertise includes treatment of women’s health needs such as hormone replacement therapy and weight loss programs for men and women.