MEET THE TEAM

Are you living with pain?

KOH Physical Therapy Lab can help. We have been known to restore loss of function, mobility and relieving pain in our patients.
Our dedicated and caring team comprises of well experienced professionals. It’s the right time for you to meet our team.

INJURY SPECIALISTS

DAVIS KOH, DPT, MBA, GCS, CSCS
DAVIS KOH, DPT, MBA, GCS, CSCS
Nick Perkins, DPT
Nick Perkins, DPT
Emmanuel Garcia, DPT
Emmanuel Garcia, DPT
Nancy Kim, MPT
Nancy Kim, MPT
Vanessa Avila, PTA
Vanessa Avila, PTA
Shanell Noji, PTA
Shanell Noji, PTA
Stephen Obana, PTA
Stephen Obana, PTA
Alice Koh
Alice KohDirector of Operations
Jorge Castellanos
Jorge CastellanosSenior Lab Tech
Tanisa Niranatkul
Tanisa NiranatkulLab Tech/ Administrative Coordinator
Valentine Ngo
Valentine NgoLab Tech/Aide
Jen Sebastian
Jen SebastianAdmin Assistant
Da Vianna Robinson
Da Vianna RobinsonLab Tech
Daniel Nailes, EMT
Daniel Nailes, EMTLab Tech/Aide

DAVIS KOH, DPT, MBA, GCS, CSCS

Chief Clinical Injury Specialist

Dr. Koh is a sports and orthopedic physical therapist with over 20 years of experience. He earned his B.S. degree in Physiological Sciences from UCLA as well as his Master and Doctorate degree in Physical Therapy from USC. Dr. Koh also earned a MBA from USC’s Marshall School of Business.

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NICK PERKINS, DPT

Injury Specialist

Dr. Perkins received his Doctorate of Physical Therapy with high honors from the University of St. Augustine. The University of St. Augustine’s comprehensive curriculum provided him with a strong background in physical rehabilitation of various patient populations with an emphasis in orthopedic and manual physical therapy. His clinical experiences allowed Dr. Perkins to treat a diverse patient population ranging from dependent geriatrics to advanced athletes in both land based and aquatic settings.

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EMMANUEL GARCIA, DPT

Injury Specialist

Dr. Garcia entered the field following the completion of his Doctorate of Physical Therapy with honors from Chapman University in Orange, CA. Since then, he has developed an insatiable interest in movement analysis.  He believes that proper flexibility, movement technique and motor control are at the core of peak athletic performance as well as movement dysfunction and pain.

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NANCY KIM, PT, OCS

Injury Specialist

Nancy has over ten years of physical therapy experience in outpatient orthopedics settings. She has worked with a large range of orthopedic diagnoses with all age ranges. She has completed a two year long manual therapy course in orthopedics and movement science.

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VANESSA AVILA, PTA

Injury Specialist

Vanessa is an advocate of wellness and enjoys helping her patients understand what to expect during Physical Therapy as well as giving them the tools to maximize their own recovery. After undergoing knee surgery, she experienced what it is like being a patient and the importance of having quality hands-on treatment from a caring therapist.

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SHANELL NOJI, PTA

Injury Specialist

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STEPHEN OBANA, PTA

Injury Specialist

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ALICE KOH

CFO & Director of Operations

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MICHAEL ROSSI, CSCS

Senior Lab Tech

Michael graduated with honors from CSUF with a Bachelor of Science in Kinesiology with an emphasis in clinical exercise science. Michael’s passion for human movement began at an early age when he was competing with the National Scholastic Surfing Association.

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JORGE CASTELLANOS

Senior Lab Tech

Jorge graduated from CSUF with a Bachelor of Science in Kinesiology with an emphasis on Clinical Exercise Science. He was also inducted into the National Society for Collegiate Scholars during his second semester for his exemplary academic achievements as well as making the Dean’s List for his department.

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TANISA NIRANATKUL

Lab Tech/Administrative Coordinator

Tanisa graduated from the University of California, Irvine with a BS in Biological Sciences. Tanisa has always had a strong interest in public health and has always greatly valued the importance of fitness and leading a healthy lifestyle. Her interest in the field originated when her father went through physical therapy for several months after a knee replacement surgery.

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VALENTINE NGO

Lab Tech
Valentine is a multi-sport athlete. She has experience in lacrosse, tennis, soccer, martial arts, and karate. Her love for sports combined with her rewarding experiences with many different patients has helped her decide to pursue an occupation in physical therapy.

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DANIEL NAILES, EMT

Lab Tech

Daniel has always expressed a passion for helping others and wants to pursue a career in the medical field. He has had many involvements including medical internships at Kaiser Permanente’s Emergency Department, Pharmacy, and ICU and UCI Medical Center’s Obstetrics and Gynecology department. Daniel is a licensed Emergency Medical Technician from West Coast EMT.

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JEN SEBASTIAN

Administrative Assistant

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  • Expertise in unique conditions of all ages and growing athletes.
  • Motivation for athletes to properly carry on their sporty activity.
  • Guidance for patients to heal completely and be able to play and perform well once again.

HIGH PERFORMANCE LAB

Injury Specialists & Providers

Best PT in Socal California Nominee by KCAL9-“Best of LA” TV Series, Active Release Techniques®, Certified Battling Ropes Coaches, Certified Kinesio® Tape, Graston Technique® practitioner, Expert Witness on Physical Therapy Cases, Level 1 Dynamic Variable Resistance Training Certification™, D.V.R.T.™ Certified Coach, Certified Strength and Conditioning Specialist (CSCS), Board Certified Geriatric Clinical Specialist (GCS), Board Certified Orthopedic Clinical Specialist (OCS), Fascial Manipulation® Techniques, Certified Selective Functional Movement Assessment (SFMA), Official Medical Providers for Team USA Volleyball, Team USA Sailing, Team Weightlifting, and Titleist Performance Institute (TPI) Provider.

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