About Us: Our Story

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Clinical Team

Dr. Rita Ellithorpe

Founder & Medical Director, Tustin Longevity Center

Dr. Ellithorpe received her medical degree in 1982 from The Chicago Medical School/University of Health Science in North Chicago, IL. From there she completed her internship in family practice at Womack Army Hospital, Fort Bragg, NC in 1983. At Fort Knox, KY, she served as an emergency room staff physician, general medical officer and flight surgeon as Chief of the Aviation Clinic from 1983-1990.

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Dr. Ellithorpe is a graduate and guest faculty member of Capitol University of Integrative Medicine, Washington, D.C. since January, 2001. There she taught anti-aging medicine and natural hormone replacement therapy for women and men. She is a Diplomat of the Board of Anti-Aging Medicine as well as the founder and medical director of Tustin Longevity Center. A national speaker on the topics of Oxidative Stress and Anti-Aging, she also has published her research in several peer reviewed journals. She participated in cancer investigations with Dr. Stanislaw Bruzynski at his research institute in Houston, Texas and was later published as a co-author in literature describing his unique therapy. A staff physician and Director of Women's Studies at Whitaker Wellness Medical Clinic in Newport Beach, CA, she went on to help in the development of natural medicinal therapies at Great Smokies Medical Center in Asheville, North Carolina. Dr. Ellithorpe holds a second doctorate in integrative medicine focusing on health at the cellular level.

With a determined commitment to her patients' nutritional road to health, she regularly reviews modalities and documents results. This is done in an effort to share, through journal publications, research of successful interventions. Dr. Ellithorpe provides a practice rooted in a functional approach which integrates the best of standard, western medicine with effective, natural therapies.

Dr. Cyndee Ayson Mitchell

Gynecology & Women's Health

Dr. Mitchell has exceptional credentials, graduating from Tulane Medical School and completing an internship in Obstetrics and Gynecology at Women's Hospital, University of Southern California. She completed her residency at the State University of New York Health Science Center at Syracuse, where she received the prestigious "Robert Nesbit Medical Resident Award" and the "Roerig President's Award" for medical excellence.

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Dr. Mitchell is a board certified fellow of the American College of Obstetricians and Gynecologists. Additionally, she is a credentialed NAMS (North American Menopause Society) Menopause Practitioner.

Dr. Cyndee Ayson-Mitchell respects the patient, believing a fully informed patient makes better choices and participates more actively in her own health management. Decisions are reached together by physician and patient, after extensive discussion. Dr. Mitchell and I believe that improving your internal health via a program of dietary and hormonal management can go hand in hand with improving overall health and well-being. I look forward to working closely with Dr. Mitchell in providing you, our patients with a comprehensive well woman program enhanced by her excellent gynecologic expertise.

Dr. Mitchell offers a full range of gynecologic care, including pap smear, colposcopy, STD screening, contraception, infertility, menstrual irregularity, endometriosis, pelvic pain, bioidentical hormone replacement therapy (BHRT) and more.

Dr. Janel L. Meric

Intergrative Medicine for Men & Women | Gynecology

Dr. Janel L. Meric earned her Bachelor of Science degree in Biological Sciences at the University of California, Irvine. After graduating with honors from Tulane University School of Medicine in 1987, she completed her residency in Ob/Gyn at the University of Tennessee, Memphis in 1991. Dr. Meric is Board Certified by the American Board of Obstetrics and Gynecology and the American Board of Integrative Holistic Medicine. After extensive additional education and training, she promotes natural health and wellness for women and men. She is certified by the American Academy of Biologically Identical Hormone Replacement Therapy.

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Dr. Meric strives to address the root cause of symptoms, rather than prescribing drugs to mask the symptoms, so that the body can truly heal, providing patients with a better quality of life. Dr. Meric treatment approach includes customized recommendations for hormone balance, nutritional supplements, diet and lifestyle changes.

Linda Keil, RN

Nutritional Counseling | IV Therapy

Linda began in the healing profession as a nurs as an LVN 1985 and in 1986 graduated from Chapman University with ASN, Registered Nurse. She worked for a Nursing Registry for 8 years, experiencing many areas of nursing: Medical-Oncology, Surgical, ICU, Post Partium, Womens surgery, Step Down Cardiac and Respiratory Units. She also received Certifications for Administration of Chemotherapy from Los Alamitos and Hoag Hospitals as well as certification from Corondelet for placing PICC Lines (Periferaly Inserted Central Catheters).

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With the many changes taking place in the hospitals one being the change in the nurse patient ratio, she felt that she was not able to practice all of what she was taught, so she ventured into the Home Health Arena. The one on one time with patients allowed her to administer, educate and with her case management skills she was able to connect patients and their families with other community services that would help improve their quality of life.

She has been fortunate in her career to work with some of the finest cutting edge Physicians like Dr. Rita Ellithorpe M.D., Dr. Brett Jacques N.D., Dr. Julian Whittaker M.D., to name a few.

She has also studied non-invasive modalities for healing. For example: Prayer work, Reiki (a form of hands on healing), Healing with Color and Essential oils, and Touch for Health (a technique for muscle balancing). She holds certifications in nutrition from The Natural Institute of Naturopathy; The International Foundation for Nutrition and Health and FirstLine Therapy (FLT) therapeutic lifestyle certification program.

Linda is a true asset to Tustin Longevity Center. Her nursing skills and knowledge in the areas of Intravenous Therapies and nutrition, combined with her loving and caring approach to all that she does makes her a perfect fit for TLC.

Office Team

Mandip Pannu

Front Office Supervisor | Certified Medical Assistant

Biography coming soon...

Yesenia Manzo

Patient Care

Biography coming soon...

Erin Ellithorpe

Patient Care

Biography coming soon...

Ryan Watkins

Patient Care

Biography coming soon...

Talon Ellithorpe

Director of Operations | Business Manager

Biography coming soon...

Harley Howard

Patient Care, Nutrition Dept.

Harley is the Suppliment Sales clerk at TLC. Whether you purchase products over the counter, by phone, or on-line, Harley is dedicated to your patient care needs and counts it a privilege to serve you.

Harley has been featured on Discovery Channel's "Mystery Diagnosis", "Mystery ER" and also on PBS' "Second Opinion", as well as the New York Times on the subject of Sleep Apnea. Harley Howard is also Pastor of the Foundation of Truth Bible Church in Santa Ana, CA. He is married with two daughters and currently resides in Santa Ana. In his spare time he is a serious racquetball player!

Jan Doherty

Phlebotomist | Certified Medical Assistant

Biography coming soon...

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  • Dietary Primer : New Patient video

Contact Us

telephone number

(714) 544-1521

fascimile number

(714) 544-1904


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