About the Medical Team

Partners in Health At The Spring Center

Meet our team…

In the spirit of a true doctor, the meaning derived from the Latin docere – to teach, Dr. McCann is committed to teaching and empowering her patients and her staff.

She is also committed to her own lifelong learning, recognizing the need to deepen her inquiry in order to be of service.  Kelly K. McCann is a truly integrative physician with board certifications in Internal Medicine, Pediatrics, and Functional Medicine. The patient-care model at the Spring Center includes the best of conventional allopathic approaches blended with functional and integrative medicine, using evidence-based practices whenever possible, which together bridge the biological, environmental, social, psychological and sometimes even spiritual aspects of health.

Dr. McCann, under the auspices of The Spring Center, innovates another aspect to her integrative practice, by introducing a Medical Team approach to patient care. The Partners in Health participants now have access to three practitioners, Dr. McCann, Kylie Nuckols, PA-C and Dr. Nicole Lean, ND who work collaboratively and collectively to provide comprehensive, integrative care.


Kylie E Nuckols, PA-C

Kylie Nuckols is a board certified Physician Assistant. She works as part of the medical team with Dr. McCann, performs physical exams, evaluates urgent concerns, assists with routine follow up, orders and interprets diagnostic tests, and writes prescriptions. Her training in conventional medicine complements the integrative and functional medicine model in our practice. She is currently pursuing her Certification at the Institute for Functional Medicine.

A native of California, Kylie was born and raised in Happy Valley. Kylie began her training at University of California in Davis graduating with Honors in a Bachelor of Science degree in Neurobiology, Physiology and Behavior. During her time at UC Davis, she worked in medical research, specifically genetic, reproductive and stem cell technology while working part time as an Emergency Medical Technician at an assisted living facility for the elderly and disabled. Kylie continued her education at Western University where she earned her Master of Sciences as a Physician Assistant. During her internships she practiced predominantly adult medicine with surgical subspecialties, advanced diabetic management and rural medicine for the underserved and homeless populations. She has additional training and experience in procedures including facial injections and dermal fillers for aesthetic improvement.

Kylie began her career in bariatric medicine and surgery for the obese and overweight population before moving to Internal Medicine. She became interested in nutritional and functional medicine while treating those people with progressive, chronic metabolic diseases. These diseases have strong emotional and spiritual consequences. She realized that pharmaceuticals and surgeries did not adequately address their underlying medical and psychological concerns and began looking beyond conventional model of medicine for answers.

Kylie joined Dr. McCann’s medical team to gain the freedom to help her patients at deeper levels. She continues to grow and develop as a health care provider who is constantly learning new skills and tools and who delights in sharing these learnings with patients.

Always interested in her own personal health, Kylie feels that creating wellness in her life she can better to understand her patient’s experiences. She enjoys physical health in team sports and hiking. She is actively involved in her community holding a share of a community supported agriculture farm and volunteering with Big Brothers Big Sisters of Orange County.

“We are learning together, from each other, how to improve our physical, mental and spiritual health, being an example to our community for generations to follow.”


Nicole A Lean, ND

Dr. Nicole Lean is a licensed Naturopathic Doctor in the state of California. She is dedicated to optimizing health by treating each patient as a whole, unique person deserving individualized care and support. Dr. Lean’s focus is in family practice, having a passion for women’s medicine, lifestyle counseling, detoxification, endocrinology and digestive disorders. She utilizes a multitude of modalities including botanical medicine, clinical nutrition, homeopathy, hydrotherapy and various other healing therapies to support her patients reach optimal vitality. She is currently pursuing her Certification at the Institute for Functional Medicine.

Naturopathic Medicine is a unique and distinct system of health care that emphasizes the use of prevention and natural therapeutics. Naturopathic Doctors are trained to serve as primary care general practitioners who are experts in the prevention, diagnosis, management, and treatment of both acute and chronic health conditions. They are guided by six principles: Do No Harm; The Healing Power of Nature; Find the Cause; Treat the Whole Person; Preventive Medicine; Doctor as Teacher.

Dr. Lean graduated with honors from Southwest College of Naturopathic Medicine in Tempe, Arizona, receiving her Doctorate of Naturopathic Medicine. During her journey in medical school, she enjoyed working with an advocacy group on her campus called N-ACT, where she had a passion for lobbying and spreading the word of Naturopathic medicine. Dr. Lean worked in a variety of patient settings including pediatrics, drug and alcohol rehab centers, chiropractic medicine, women’s medicine, hydrotherapy, family practice, environmental medicine and many others. These experiences allowed her to develop into a well-rounded doctor that she is today. She began an internship with Dr. McCann during her last quarter of medical school and this was extended as a full-time position on the medical team. She is happy to be utilizing her many skills and knowledge in caring for patients, offering nutritional and supplement consults, ongoing support of medical management and patient education.

Dr. Lean enjoys gardening, traveling, eating out at new and fun restaurants and working out. Originally from Long Island, New York, she’s now residing in Long Beach, California where she enjoys living by the beach with her husband and their pugs, named Buddha and Lotus.