Updates on COVID-19  ›

Stockton - Hammer


We believe we can do more together than we can alone. Our goal is to improve the lives of those we touch by applying current and effective treatment paradigms in a healthy, healing atmosphere, encouraging progress. We look forward to serving you!

Our Team

Chip HankerClinic Director - PT, MPT, OCS


Chip Hanker is the Director of the Stockton office of Central Valley Physical Therapy. Prior to moving to the Stockton clinic, Chip opened and successfully ran the office in Lodi for 7 ½ years. As a former high school swimmer and water polo player and college All-American swimmer, Chip uses his athletic background along with manual therapy techniques to design individualized rehabilitation programs for a wide variety of patients with varying levels of functional abilities.

Chip and his wife Kim are busy in their personal lives raising their 3 children Lindsey, Chase and Ryan. In his free time, Chip enjoys running, water and snow skiing, spending time with his family and friends (preferably in Lake Tahoe!), volunteering in his children’s sports activities and working on his 80+ year old house.

Chapman University, Orange, CA
Master of Physical Therapy, August 2002

University of California, Davis
Bachelor of Science in Physical Education

Read Bio ›

‹ Hide Bio

Robin WoodallOffice Manager


Robin Woodall is the Front Office Manager, working for Central Valley Physical Therapy for over 5 years. She enjoys the customer service aspect of her position, bringing a kind and caring approach. In her spare time Robin enjoys quilting, sewing, and especially spending time with her husband of 26 years, two children and granddaughter.

Read Bio ›

‹ Hide Bio

Brandy LeonePT, DPT, OCS


Brandy was raised in Alaska and Texas where she trained as a gymnast for fourteen years. In 2008, she moved to California to attend undergraduate school at Loyola Marymount University. During that time, she discovered her passion for physical therapy while aiding dance majors back to health and managing the NCAA baseball and volleyball game-day operations.

Brandy earned her Doctor of Physical Therapy from the University of Southern California. Throughout her schooling she gained experience serving U.S. Army Special Operations soldiers, athletes, and individuals of all ages. Brandy is currently undergoing a one-year residency program in Orthopedic Physical Therapy to further her career as an orthopedic and sports specialist. Outside of her professional role, Brandy enjoys hiking, traveling, and attending sports games.

Read Bio ›

‹ Hide Bio

Juliette NguyenPT, DPT


Juliette was born and raised in Sacramento, California. She attended the University of California in Davis, and received her bachelor's degree in Exercise Biology. She had originally planned to attend medical school; however, with her love for exercise and patient interaction, she decided to pursue physical therapy instead, and could not be happier. She headed for the Midwest and obtained her Doctorate of Physical Therapy from the University of Mary in Bismarck, North Dakota.  At this time, she primarily has an interest in orthopedics and plans to obtain Board Certification in Orthopedic Physical Therapy in the future.  In her free time, Juliette enjoys working out, baking, singing, playing guitar, and chasing waterfalls.

University of Mary, Bismarck, North Dakota
Doctor of Physical Therapy, April 2017 

University of California Davis, Davis, California
Bachelor of Science, Exercise Biology, June 2013

Read Bio ›

‹ Hide Bio

Brian BarrettPT, DPT


Brian was raised in the Central Valley of California, living in Sacramento for much of his life. While studying biology at Sacramento State University, Brian worked as a computer technician and volunteered in the Sacramento State Cadaver Lab as a laboratory assistant. In 2017, Brian received a Doctorate of Physical Therapy from the California State University of Long Beach. His interests include, orthopedics, vestibular rehab, and working with children with special needs. Outside of his professional role, Brian enjoys playing recreational soccer, indoor rock climbing, hiking, reading fantasy novels, and spending time with his wife. 



California State University, Long Beach, California

Doctor of Physical Therapy, May 2017


California State University, Sacramento, California

Bachelor of Science, Biology, June 2014

Read Bio ›

‹ Hide Bio

Thuy MaiPTA


Thuy was raised in the central valley of California and currently resides in Stockton, CA. In 2016, at California State University Stanislaus, she earned her Bachelor’s degree in kinesiology with an emphasis in exercise physiology. She then attended Gurnick Academy of Medical Arts in San Mateo, where she received her Physical Therapist Assistant degree. She has interests in cardiovascular rehabilitation and orthopedics with plans of obtaining a board certified Orthopedic Clinical Specialty. Outside of her professional role, she enjoys spending her spare time with traveling and exploring with her family, especially to Disneyland.

Gurnick Academy of Medical Arts, San Mateo, California
Associate of Science, Physical Therapist Assistant, November 2018

California State University Stanislaus, Turlock, California
Bachelor of Science, Kinesiology, May 2016

Read Bio ›

‹ Hide Bio

Keith ZiemannPTA


Keith was born in Lodi, CA and continues to be a long time resident in the Lodi and Stockton area. He studied to be a Physical Therapy Assistant at Sacramento City College. Keith enjoys being part of the team in the Stockton Clinic and enjoys the daily interaction with his patients. He takes great pride in working with patients to help them back to their previous activity level.

Keith is married and has one son. In his free time, he enjoys spending time with his son and his friends, golfing and hiking in the Yosemite area. Working in his garden is also a rewarding hobby for Keith.

San Joaquin Delta Junior College, Stockton, CA
1985 Associate of Arts Degree (Business Administration)

Sacramento City College, Sacramento, CA 1990
Associate of Science Degree (Physical Therapy Assistant)

Read Bio ›

‹ Hide Bio

Marianella DelsiedPT Aide & Office Assistant


Marianella was raised in Tracy, CA. She lives in Stockton, CA and is raising three beautiful boys. She enjoys working in the medical field and helping patients. It brings her great joy to know she was part of a patients recovery process. She also enjoys spending quality time with her family and friends.

Read Bio ›

‹ Hide Bio

Brian TylerPTA


Brian Studied to be a Physical Therapist Assistant (PTA) at Sacramento City College graduating with Honors and his Associate of Science Degree in Spring of 2007.  He worked for 3 years at a Skilled Nursing and Rehab facility prior to shifting his focus to Outpatient at Central Valley Physical Therapy where he has been working since.

He is always looking to learn new techniques and ways to advance his skills as a PT Assisant.  As such he regularly takes continuing education classes beyond what is required for license renewal and has also become certified in Fascial Movement Taping.

He also has a desire to pass on what he has learned from experience in the field of Physical Therapy and from the classes he has taken resulting in him becoming a Credentialed Clinical Instructor.  Thus as a Credentialed Clinical Instructor he has since been taking on PT Assistant Students during their clinical rotations while in PT Assistant Programs.

When not at work he enjoys volunteering in the nursery/toddler room and attending church service at the church he is part of; Grace Community Church.  He also likes to spend time with family, cook/bake, watch various shows and movies, periodically go on walks, among other interests.

Sacramento City College, Sacramento, CA
Associate of Science Degree (Physical Therapist Assistant) 2005-2007

San Joaquin Delta Junior College, Stockton, CA
Pre-Requisite Course for the PT Assistant Program 2002–2005

Read Bio ›

‹ Hide Bio

Central Valley is Ready!Are you?

Get Started