We'd like to introduce the talented people who keep this office running on a day to day basis. From therapists to trainers to office aides, CORE Physical Therapy's employees are all dedicated to helping their customers reach their physical goals.


Matthew Reekstin
Managing Owner

Monica Alvarez
Chief Operations Officer

Physical Therapists & Support

Jennifer Nault PT, MPT

Clinical Supervisor - Temecula

Jennifer attended UC Riverside for her undergrad and Cal State Northridge for her Masters in Physical Therapy. She has been a practicing therapist for 12 years, focusing on orthopedics, neurological impairments, sports injuries, post-operative rehab, and complex spine injuries. She is excellent in manual therapy, neuromuscular re-education, and taping techniques. Dedicated and enthusiastic, with a reputation for innovative evidence-based treatments, outstanding one-on-one care, and consistent patient satisfaction. Jennifer serves as an APTA credentialed clinical instructor.


Jennifer became interested in physical therapy in high school after watching many injured soccer teammates go through rehab. "My favorite part of the profession is watching the progress and seeing patients gain their function and confidence back. 

When I’m not working, I enjoy spending time with my kids at the beach, photography, snowboarding, and wake boarding.  I’m an animal lover and have fostered many shelter dogs over the years. My other hobbies include drawing, watching basketball, and binge-watching Grey’s Anatomy. I have additional experience in balance rehab and team strength and conditioning."

Her dedication and excellent service to our patients and staff leave no doubt why Jennifer is the clinical supervisor of our Temecula branch.

Kevin Pham PT, DPT

Director of Student Education

As an Orange County native, Dr. Kevin Pham played sports at San Clemente High School before earning his BS in Kinesiology at Cal State Fullerton and then his Doctorate of Physical Therapy at Western University of Health Sciences.  As a Doctor of Physical therapy, he is dedicated to providing patients excellent care with his hands-on approach. Dr. Pham is not only an APTA credentialed clinical instructor but serves as the Director of Student Education overseeing the entire program, approving students who come to our facilities, and implements the policies and procedures followed.


As Director of Student Education, he has overseen the growth of CORE Physical Therapy's student program into one of the premier clinical rotation sites in Southern California and has forged strong partnerships with the Doctor of Physical Therapy Programs at universities in Southern California and out of state.  



3x  CORE PT Top Performer of the Year

APTA Certified Clinical Instructor

Fluent in Vietnamese

Director of Fitness

Krista Contreras PT, DPT

Director of Continued Education

Dr. Contreras is a board-certified, licensed Doctor of Physical Therapy. She graduated from the University of Southern California in 2016 where she earned her Doctorate in Physical Therapy. She completed her last clinical rotation at CORE Physical Therapy in 2015, and joined the CORE team shortly after graduation in.. 


Dr. Contreras was born and raised locally. She attended Rosary High School in Fullerton, where she played tennis and softball. She then started on her pursuit of a career in Physical Therapy, a lifelong dream of hers, by earning her bachelor’s degree at Loyola Marymount University. 


Dr. Contreras has special interests in treating diagnoses including neurological disorders such as stroke (CVA) and Parkinson’s disease, balance and gait disorders, disorders of the TMJ, head and neck pain, and sacroiliac joint dysfunction. Dr. Contreras enjoys working with patients that span the lifespan including pediatric patients, young athletes, and geriatric patients. 


When she is not treating patients at CORE, Dr. Contreras enjoys swimming, biking, watching Angels baseball games, and going to theme parks with her husband and daughter.


She is passionate about the education of future Physical Therapists and serves as an APTA credentialed clinical instructor. Dr. Contreras has firm beliefs in the value of evidence-based physical therapy treatment and strives to provide exceptional care to all of her patients. 

Carey Laurent PT, DPT

Health & Safety Director

Dr. Laurent was born and raised in La Habra, CA with two older sisters, an older brother, and two loving parents. From a young age, he played any and all sports and took a liking to basketball and soccer most. He attended Servite High School in Anaheim, CA where he played basketball for 4 years and lacrosse for 1 year. He went on to graduate from UC Santa Cruz, home of the Banana Slugs, with a BS in Health Sciences.

It was during his undergraduate years he found that physical therapy was his calling. After undergraduate studies, he decided to move to the south for 3 years and attend the Doctor of Physical Therapy school at Western Kentucky University, where he was class treasurer in charge of fundraisers. Dr. Laurent has been working at CORE PT since September 2018 and enjoying every minute of it.

Dr. Laurent enjoys treating in the outpatient setting, especially with orthopedic injuries, and he gets ultimate satisfaction when his patients leave on the last day of PT pain-free and returning to what they love doing most. Dr. Laurent serves as an APTA credentialed clinical instructor here at CORE Physical Therapy

Over the years he has increased his grasp on the Spanish language and is now independent when working with Spanish-speakers here in the clinic. During his free time, Dr. Laurent enjoys doing anything outdoors, whether this is shooting hoops, going to the beach, kayaking, going on hikes, or traveling.


Diane Kahler PT, DPT

Dr. Kahler was born and raised in Orange County. She received her Bachelor's Degree in Kinesiology from Sonoma State University in December of 2010 and her Doctorate from Azusa Pacific University in December 2015. Dr. Kahler serves as an APTA credentialed clinical instructor for Physical Therapy schools sending their doctorate students to our clinics.


Diane is an avid Disney fan and loves SCI-Fi/Fantasy novels. She also enjoys her new role as an auntie.

Ashley Comeford PT, DPT

Ashley graduated from the University of California, Los Angeles in 2011, and then attended the Western University of Health Sciences, where she received her Doctorate in Physical Therapy in 2016.

Dr. Comeford enjoys treating patients with various conditions and injuries including lumbar and cervical injuries, shoulder and hand conditions, hip, knee, ankle injuries, rotator cuff repair, carpal tunnel release, and CVA, just to name a few. She also enjoys going to Disneyland whenever she is able.

She is an APTA credentialed clinical instructor and is certified in Rocktape Performance Movement Techniques

Ming Chiu PT, DPT

Dr. Chiu received his Doctorate of Physical Therapy from Loma Linda University. He has been a practicing Doctor of Physical Therapy for over 15 years. His philosophy is to provide patients with individualized treatments to their specific needs by incorporating proper body mechanics and specific tasks allowing patients to have a better quality of life. Dr. Chiu is an APTA credentialed clinical instructor helping physical therapists of the future.


Throughout his career, he has worked with patients from athletes to geriatrics and has some extensive experience with hand therapy as well. Dr. Chiu's free time is spent volunteering as an umpire for a Little League Baseball Organization that teaches children life lessons and builds a stronger community.

Rachel Kim PT, DPT

Rachel graduated with her Bachelor's degree from California State University, Long Beach, and went on to obtain her Doctorate degree in Physical Therapy from Azusa Pacific University in December 2019.


Rachel is not only a skilled physical therapist, but she is also fluent in Korean and is very helpful in making this population of our clinic feel at ease with their care.

Andrew Beyrooty, PT, DPT

Andrew graduated with his Bachelor's degree from Chapman University, Orange, and went on to obtain his Doctorate degree from Rocky Mountain University & Health Professions, Provo Utah. He has been practicing in Utah until he and his wife recently relocated back to his home in California. 


In addition to his asset as a physical therapist, Andrew is also fluent in Spanish and looking forward to working 

to working with all patients to help them reach their goals.

Kylie Mann, PT, DPT​

Kylie was born and raised in California and attended the University of St Augustine, Texas for her graduate training. She loves to be outdoors and is an animal lover who goes on hikes with her 2 dogs while her cat waits at home for them. She also likes to crochet and is excited about being the newest member of our team.

Andrew Stenson, PTA

Andrew attended California State University, San Marcos for his undergrad and graduated from San Diego Mesa College with his PTA in 2017. He worked as an athletic trainer with Murrieta Valley High School, where he spent years as a physical therapy aide.

Andrew was a baseball head and assistant coach for kids ages 13 and under. Andrew's most memorable moment was working as an aide with the San Diego Padres physical therapist. Andrew looks forward to implementing the knowledge he has gained through these various experiences to help patients navigate through the rehabilitation and aging process.


Romel Ramirez, PTA, CMT

Romel is not only a licensed physical therapy assistant, but he is also a certified massage therapist. Whatever your ache or pain, Romel can help. He is also happily married and father of two beautiful little girls. He likes sports and has a history in the race car sports arena. 


Marcus Heisner, ATC

Marcus grew up in Santa Ana, CA, and obtained his Bachelor's Degree from Point Loma Nazarene University in Athletic Training. He played 4 years of collegiate baseball, winning a Gold Glove at second base. Marcus is the clinics' Certified Athletic Trainer, and is currently contracted to Fullerton High School as their Head Athletic Trainer. Marcus is currently in pursuit of a Master's Degree in Kinesiology from California Baptist University. Outside the clinic, Marcus continues to pursue his love for athletics as a weekend warrior, playing baseball and hockey.


Jenna Krizo, ATC

Christian Trigueros, CMT

Christian graduated from Everest College in Alhambra, CA in 2014 as a Certified Massage Therapist. Since then, he's worked alongside physical therapists in out-patient orthopedic clinics and has focused on therapeutic massage to help patients to the best of his ability.  Sports, Deep Tissue, Relaxation, and Pregnancy massage are just some of his specialties. He has a sincere passion to want to help people and make a difference. Patients and clients who suffer from pain in their shoulders, neck, or back praise his skills. Along with patients suffering from Parkinson's Disease, Adhesive Capsulitis, and Sciatica, just to name a few. 


Chris loves music. He plays bass on the Praise and Worship team at the church he attends, where he has also volunteered as a music teacher for children and teenagers. He enjoys swimming, traveling, and watching live musical performances with his wife.


Chris is fluent in Spanish and is certified in Rock Tape Kinesiology Taping.


Luis “Artie” Hernandez, BS

Clinical Aide Supervisor – Fullerton

Jon Arroyave, BS

Clinical Aide


Kyra Sigmon, BS

Clinical Aide

Adolfo Hernandez, BA

Clinical Aide

Jacob Brink, BS

Clinical Aide

Frank Lopez, BS

Clinical Aide

Ryan Aguilar, BS

Clinical Aide

Abigail Tapia
Clinical Aide

Paloma Granados, BA

Clinical Aide

 Valerie Ortega, BS

Clinical Aide


Jessica Negrete

Front Office Supervisor

Marina Archuleta

Patient Service Coordinator

Anna Srulevitch, BA 

Medical Administrative Specialist

Fanny Lezama

Medical Administrative Specialist

Christina Hernandez

Medical Administrative Specialist

Monica Johnson, B.A.

Medical Administrative Assistant

Sammy San Elias

Medical Administrative Assistant

Tiffany Arciga

Medical Administrative Assistant

Gianna Gazich, BA 

Medical Administrative Assistant 

Wellness Center

Jon Arroyave, BS

Fitness Trainer – Orange

Adolfo Hernandez, BA

Fitness Trainer - Orange

Kyra Sigmon, BS

Fitness Trainer - Temecula

Frank Lopez, BS

Fitness Trainer - Fullerton

Christian Trigueros, CMT

Certified Massage Therapist

Marketing / Affiliates / Billing

Kellie Redding

Executive Assistant
Benefits and Payroll

Carol Reekstin


Provider Relations

Billing Inquiries:

Professional Medical Billing Systems

Affiliates: Joo Won (Paul) Kim, L.Ac, MSOM

Acupuncturist- Fullerton

English not your first language? Our multilingual offices have people who can speak Spanish, Mandarin, Korean and Vietnamese so language isn't a barrier when it comes to your health and wellness.

Anaheim Hills

120 S. Chaparral Ct., Suite 150

Anaheim, CA 92808

Phone: 714-998-9580

Fax: 714-998-9581

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1027 N. Harbor Blvd., Suite B

Fullerton, CA 92832

Phone: 714-870-U4PT (8478)

Fax: 714-870-8405

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1026 E. Chapman Avenue, Suite C

Orange, CA 92866

Phone: 714-538-1952

Fax: 714-538-1490

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41278 Margarita Road, Suite 102

Temecula, CA 92591

Phone: 951-587-8105

Fax: 951-587-8405

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