Providers

James Jarvise, PA

Jay is an Arizona native who has 22 years of experience working as a Physician Assistant. He has worked in a family practice clinic, urgent care, and currently works in the Emergency Department. Jay served as a Navy Corpsman with Marines for 4 years at Camp LeJune, NC. He earned his undergraduate B.S. degree in […]

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Michael Martindale, P.T.

Sports Therapy and Biomechanics: Michael Martindale graduated from the Pacific University School of Physical Therapy in 1979. He specializes in the field of orthopedic and sports physical therapy with a special emphasis on the biomechanics of the foot and lower extremities, and design of foot orthotics. Michael owns BioSports West, a physical therapy practice found

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Renee Schultz, PT

Renee has been a licensed Physical Therapist since 1986, a graduate of Northern Arizona University. She has extensive PT experience, in both neurological and outpatient orthopedics. Renee has an immense appreciation for the body and how the human body works. She brings her education and years of experience to every patient encounter. Renee has formal

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Jeffrey Lin PT, DPT

Born and raised in Washington, Jeffrey Lin graduated in 2022 from Midwestern University, AZ. Although Jeffrey is a pianist and violinist who studied music in undergrad, he has an extensive background with exercise and physical activities including soccer, weight-lifting, break-dancing, as well as other sports and recreational activities. Jeffrey was introduced to PT first-hand from

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Darren Nigo, PT, DPT, ATC

Darren has been a physical therapist since 2017, working primarily in outpatient orthopedic settings. His background includes working as an Athletic Trainer while studying at Oregon State University, helping train athletes from multiple sports. He enjoys the team approach, personally getting to know each patient and helping them achieve their individual goals. This approach was

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Brad Simpson, DPT, OCS at Reflex Knee Specialists

Brad Simpson, DPT, OCS

Dr. Brad Simpson has worked in outpatient orthopedics, as a physical therapist, for over fifteen years. He is passionate about learning the ‘whole’ patient, spending the time deciphering a person’s history and clinical picture to best treat each individual uniquely. His love for teaching leads to patients becoming empowered, learning how to manage their bodies

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Ryan Riggs, MD at Reflex Knee Specialists

Ryan Riggs, MD

Dr. Riggs has over 22 years of experience in the medical field.  He founded The Active Joint Institute, a Utah-based medical clinic which provides non-surgical treatments for musculoskeletal conditions such as osteoarthritis.  He has performed thousands of knee injections and brings a wealth of knowledge and experience to the Reflex Provider team. “One of the

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Natacha Yonezuka-Gullo, PA-C

We are very excited to have Natacha Yonezuka Gullo joining our Reflex provider group. She is a highly-skilled physician assistant (PA) who comes to us with over 20 years of experience specializing in orthopedic medicine. Natacha has worked in sports medicine and orthopedic practices around the country and has been involved with professional teams, providing

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Anthony Wong, MD at Reflex Knee Specialists

Anthony Wong, MD

Anthony Wong, MD, was born in Hong Kong, China and his family moved to Arizona before he was a year old. He currently works at Reflex Knee Specialists with offices in Portland, Oregon; Bellevue, Washington; and Tempe, Arizona. He grew up in Tempe, Arizona, and attended high school at Brophy College Preparatory. Dr. Wong completed

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Shannon Corrigan, MD at Reflex Knee Specialists

Shannon Corrigan, MD

Shannon Corrigan, MD, works as a physician at Reflex Knee Specialists in Bellevue, Washington. Dr. Corrigan was born and raised in Bellevue, Washington. He earned his undergraduate degree in psychology at Whitman College in Walla Walla, Washington, and his medical degree at the University of Washington in Seattle. He has been board-certified in emergency medicine

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Amber Vogt, DO, FACOEP at Reflex Knee Specialists

Amber Vogt, DO

Amber Vogt, DO, FACOEP, is a provider serving patients at Reflex Knee Specialists in Portland, Oregon. She has a strong interest in medical education, global health, and sports medicine. Dr. Vogt was born and raised in Missouri and completed her undergraduate degree at the Missouri University of Science and Technology in Rolla, Missouri. She subsequently

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Russ Riggs, MD at Reflex Knee Specialists

Russ Riggs, MD

Russ Riggs, MD is the clinical director at Reflex Knee Specialists, with offices in Portland, Oregon, Bellevue, Washington, and Phoenix, Arizona. He has specialized training in managing knee pain and knee injuries, diagnostic musculoskeletal ultrasound, interventional orthopedics, regenerative therapies, ​​viscosupplementation, and more. Dr. Riggs graduated summa cum laude with his Bachelor of Arts from Arizona

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