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Meet the Team at New Life Chiropractic

Dr. Tim

Dr Tim Smith – Clinic Owner

Drs. Tim and Catherine Smith founded New Life Chiropractic here in Rocklin, CA in 2012 with a mission to empower families to live a healthy life naturally though Chiropractic and Holistic health care. Drs. Tim and Catherine Smith are committed to fostering wellness in the community through education, support, and personalized care. They believe in the transformative power of Chiropractic and are dedicated to helping families thrive. They understand the importance of education and empowerment in making informed health choices.

Dr. Tim Smith epitomizes experience, expertise, and unwavering dedication in the field of chiropractic care. As a magna cum laude graduate of Life Chiropractic College West, he specialized in spinal correction, extremity management, neuro-muscular education, nutrition, and neurology. His journey as a Max Living doctor reflects his commitment to delivering the 5 Essentials of health, bolstered by certifications in nutrition, fitness, detoxification, and advanced spinal correction.

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A lifelong athlete and health expert, Dr. Tim’s passion extends beyond the clinic walls. He is a sought-after speaker and the author of “Unleash the Healer Within,” a transformative guide to holistic wellness. Through his extensive experience and tireless advocacy, he empowers individuals to reclaim their health and vitality, leaving an indelible mark on their journey to optimal well-being.


Dr. Catherine

Dr Catherine Smith – Clinic Owner

Dr. Catherine Smith, a distinguished graduate of Palmer West Chiropractic College, embodies unparalleled experience and expertise in chiropractic care. Her journey began with a bachelor’s degree in Kinesiology from San Diego State University, with a focus on Fitness, Nutrition, and Health. With a passion to serve, Dr. Catherine has treated individuals across all stages of life, from newborns to the elderly. Her extensive experience includes working with a diverse range of athletes, honing her skills as a member of the Palmer West Sports Council.

As a mother to two beautiful girls, Dr. Catherine has shifted her focus to supporting pregnant moms, postpartum care, and pediatrics. She holds certifications as a Webster Certified Chiropractor and Birth Fit Professional, enabling her to provide safe guidance through the motherhood journey, encompassing chiropractic care, exercise, and nutrition for both mother and baby. She passionately advocates for a natural approach to pregnancy and motherhood, while meeting her patients where they are in their health and wellness journey. With dedication and compassion, Dr. Catherine empowers her patients to embrace holistic health and thrive in every stage of life.


Dr. Angelo

Dr Angelo Gassoumis – Chiropractor

Dr. Angelo Gassoumis graduated from SCUHS in 2022 with an emphasis in sports medicine. He received his bachelor’s degree in Athletic Training from Loyola Marymount University while also working as a certified personal trainer. Dr. Angelo has a big passion for health and fitness and was introduced to chiropractic care while working for a chiropractor in the years he spent bodybuilding after receiving his bachelor’s degree. From that moment on he knew he wanted to become a chiropractor and help people live their highest quality of a healthy life. Dr. Angelo is motivated to bring the highest quality of care to his patients through spinal correction and education on the 5 essentials.



Lisa McGregor – Function Nutrition Director

Lisa’s extensive experience spanning over two decades in the health and wellness field brings immense value to the New Life Chiropractic team. With a background as a group fitness instructor, former fitness studio owner, and former Isagenix health representative, she possesses a wealth of knowledge in promoting holistic health and well-being.

Lisa’s educational journey includes studying at the Institute for Integrative Nutrition (IIN), where she obtained certifications as a Health & Life Coach and also holds a certification as a Breathwork Coach. Her passion for holistic health and non-toxic living is unwavering, demonstrated by her commitment to continuous education through classes, seminars, and staying updated with the latest research in the field.

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One of Lisa’s greatest joys is encouraging patients along their journey to optimal health. She finds fulfillment in witnessing individuals reclaim their health and vitality through chiropractic care and embracing a functional lifestyle. At New Life Chiropractic, Lisa values her front-row seat in seeing the transformative power of chiropractic and the 5 Essentials in people’s lives.

Outside of her professional endeavors, Lisa embraces an active lifestyle and cherishes moments with her teenage daughter and beloved dog, Pete. Whether basking in the sunshine at the beach or lake, enjoying paddle boarding and wakeboarding, dancing, or being with family and friends, Lisa finds joy in both her work and personal pursuits.


Matt Shirley

Matt Shirley – Chiropractic Assistant/ Back Office Manager

Matt is a versatile professional with a diverse background spanning technology, customer service, and sports management. With experience as a golf professional, Matt brings years of exceptional customer service expertise to his current role. His understanding of customer needs and commitment to excellence make him an invaluable asset in ensuring smooth operations and client satisfaction.

Beyond his professional endeavors, Matt is a passionate sports enthusiast with a keen understanding of athletic performance and the mechanics of the human body. As a competitive golfer and avid traveler, he continues to pursue his love for the sport while exploring new destinations. An ardent Star Wars fan, Matt also enjoys immersing himself in the galaxy far, far away.

In his downtime, you can find Matt cheering on his favorite sports teams, particularly the 49ers and Kings, showcasing his unwavering support and dedication as a true sports junkie.

Connect with Matt to discover more about his professional insights and personal interests.



Mariana Shaffer – Front Desk Chiropractic Assistant

Mariana serves as a compassionate check-in chiropractic assistant, dedicated to supporting individuals on their wellness journeys. Her profound commitment to leaving a positive impact drives her professional endeavors, as she strives to enhance the well-being of every individual she encounters. Mariana’s realization of New Life Chiropractic’s shared dedication to improving lives resonates deeply with her own values, solidifying her belief in the importance of leaving things better than they were found. She is unwavering in her promise to prioritize the quality of life, health, and happiness of each patient she assists.

Beyond her role at the clinic, Mariana finds joy and fulfillment in outdoor activities, particularly hiking through nature and engaging in sports with her boyfriend. Soccer has been a passion of hers since the age of five, and she continues to pursue it actively, participating in co-ed adult soccer leagues during her free time. Mariana’s dedication to personal growth extends to her academic pursuits; she is currently working towards her bachelor’s degree in marriage and family studies with aspirations of becoming a marriage and family therapist, furthering her mission to positively impact the lives of others.



Veronica Alonzo – Case Manager

Veronica is deeply passionate about her role at New Life Chiropractic as the Patient Case Manager, finding fulfillment in the positive connections she builds with patients daily. Veronica enjoys working out, participating in outdoor activities, and spending time with family. Her interest in personal health and wellness sparked through fourteen years of playing soccer competitively. Her love for the job stems from the meaningful interactions and the opportunity to contribute to the well-being of others. Veronica discovered this rewarding position through her interest in holistic healthcare, aligning perfectly with her desire to be part of a team that prioritizes care and community.


Meet the Team at New Life Chiropractic | (916) 259-2682