Jessica Barker, PA-C


Jessica is a physician assistant (PA) who joined Dr. Mackenzie´s practice in 2005. A physician assistant is a health care professional licensed to practice medicine under the supervision of a doctor. Jessica received her Bachelor of Arts in Biological Sciences from the University of California – Santa Barbara. She completed her Masters in Physician Assistant studies at the University of Iowa Medical School. Jessica has been a practicing PA-C in California since 1999. She initially worked in Neurology in San Diego. She was instrumental in developing and implementing a group-model of care for patients with Headache and Dementia. She had an active involvement in research, serving as a co-investigator on multiple projects. The majority of her research focused on the use of BOTOX® in preventing headaches. Her practice with BOTOX® for headache prevention provoked an interest in its cosmetic uses. Jessica also received a board certification in Anti-Aging Medicine in 2006.

Upon relocating to Santa Barbara, she transitioned to working in Cosmetic Dermatology and Plastic Surgery. Jessica´s education and training allow her to provide a broad range of medical and surgical services to Dr. Mackenzie´s practice. These services include administering BOTOX®, Juvederm and Radiesse injections, performing IPL and laser treatments for hair removal, sun spots and spider veins, providing pre and post operative care and assisting Dr. Mackenzie with surgery.

Heather Grieco, RN

Heather has been a registered nurse for over 10 years.  She received her Bachelor of Science in Nursing from Madonna University in Livonia, Michigan.  Heather started her nursing career in Pediatric Medicine.  She worked in a high level teaching hospital where she quickly gained vast knowledge in the field of pediatrics.  During this time, she specialized in the care and management of complex pediatric hematology oncology and pediatric emergency and urgent care patients.

After relocating to the Santa Barbara area almost six years ago, she became interested in aesthetic dermatology.  She was privileged to learn from the leaders in the field of Dermatology and Plastic Surgery.  Heather has extensive training in BOTOX cosmetic, dermal fillers, fractional resurfacing lasers, intense pulse light, laser hair removal and medical grade skin care.

Heather has the privilege to work for Medicis Aesthetics as a Clinical Nurse Trainer.  Currently, she is the only Medicis Aesthetic Trainer in Santa Barbara and the Central Coast.  As a trainer, Heather teaches physicians and registered nurses proper injection techniques for Dysport, Restylane, and Perlane.

Heather is professionally and personally committed to the art and science of cosmetic rejuvenation.  She is passionate about educating clients about their skin and recommending personalized treatments and products.  Her goal is to exceed client’s expectations at every level.

Cassie Clara, RN, BSN


Cassie graduated from nursing school in 2009 with her RN license. Her passion for skincare and desire to help those around her led her to a career in aesthetic medicine. After completing an extensive training program in Los Angeles, she began working in the aesthetic dermatology field. Cassie worked as a laser specialist in medical offices in West Hills and Santa Barbara. In Santa Barbara, she was promoted to Head RN at the laser practice she worked in and was responsible for ensuring quality patient service and was instrumental in the hiring and training of new nurses. She has extensive experience with laser hair removal, photo facials/intense pulsed light (IPL) procedures, resurfacing lasers, as well as in-depth knowledge regarding medical grade skin care products.

Cassie has always been passionate about aesthetics and the art of cosmetic rejuvenation. With strong attention to detail and an artistic eye, she specializes in non-surgical treatments, where she addresses her patients’ concerns and helps enhance their natural beauty. She believes that patient education is a key component in maintaining healthy and beautiful skin, so she enjoys taking the time to instruct her patients on skin care regimens and recommends personalized treatments and products.

In addition to aesthetic services, Cassie provides pre and post operative care to Dr. Mackenzie’s surgery patients and assists in managing Pacific Plastic Surgery’s medical weight loss program. She is committed to helping her patients lose weight and maintain well balanced lifestyles by focusing on diet and exercise.

Sara Chaidez, LE


Sara is a Licensed Esthetician and has been working as a medical esthetician for eight years.  A native of Santa Barbara, she has been in the skin care industry for ten years.  After attending Joe Blasco MakeUp Artistry school in Los Angeles she attended Santa Barbara City College Cosmetology Academy and received her license.  Sara’s specialties include micropeel dermaplaning, chemical peels, microdermabrasion, and acne facials.

Lisa Glenny – Aesthetic Coordinator


Lisa is a licensed esthetician with an extensive management background in the laser skin care industry. She is a graduate of UCSB and has enjoyed a broad range of professional endeavors including teaching, real estate sales and development, advertising and marketing. Lisa has been a Santa Barbara native for the past 35 years and brings to Pacific Plastic Surgery a passion for esthetics and a commitment to providing all of our patients with personal attention and care!  She will assist you with information and scheduling for the procedure that you choose and can answer most of your questions before and after your consult with Dr. Mackenzie.  She is also the one to help you with any questions you have about financing plastic surgery.