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Dr. Brett Qualls, PT, DPT, OCS

Brett is originally from the north coast of California, and has been living and working in Lake Havasu City since 2011. Brett received his Bachelor’s degree in Sports Sciences and his Doctorate of Physical Therapy from University of the Pacific.Brett was recognized as a Board Certified Specialist in Orthopaedics by the American Physical Therapy Association and American Board of Physical Therapy Specialties. Brett also holds a Certification in Dry Needling.

Brett’s clinical interests are broad and include sports medicine, general orthopedic rehab, movement analysis, and senior wellness. Brett enjoys clinical problem solving and excels at explaining movement systems and educating his patients on musculoskeletal pathology.

In his free time, Brett enjoys snowboarding, road biking, hiking, spending time with family & friends, and travel.

Dr. Jonathan O’Neill, PT, DPT

Jonathan was born and raised in Santa Clara, California and has been living in Lake Havasu City since 2017. Jonathan is a veteran of the Army’s 82nd Airborne Division with deployments to Iraq and Afghanistan. Jonathan found physical therapy while researching ways to optimize his physical health and performance during his military service. After discharging from the Army in 2013, Jonathan began his learning path to become a Physical Therapist, receiving his bachelor’s degree in Kinesiology from ASU in Lake Havasu City in 2019 and his doctorate in physical therapy from Franklin Pierce University in 2023. Jonathan also holds certifications in myofascial cupping and dry needling.
Jonathan’s interests are in sports medicine, orthopedic & neurologic rehab, chronic pain management, and movement analysis.

In his free time, Jonathan enjoys exercising at Havasu CrossFit, competing and coaching Olympic Weightlifting, competitive shooting, hiking, reading, and spending time with his friends & family.

Ronni Jackson, PTA
Ronni was born in southern California and moved to Lake Havasu City in 2000.  She grew up visiting her grandparents in Lake Havasu City, as they are long term residents.  After high school, Ronni attended Northern Arizona University with an interest in business marketing. She quickly decided she wanted to be in the healthcare field and had a desire help people. Upon moving home, Ronni continued her education with courses at Mohave Community College and found the Physical Therapy Assistant program. Graduating in 2012, she has been working in outpatient physical therapy since that time. Her interests clinical include post-operative rehab, pediatrics and general wellness. Ronni has worked alongside Brett since 2012.

Ronni loves to spend time with her family, camping and grew up playing on the lake & desert. She and her spouse Brandon stay busy with their two children Aubrey & Roman.

Shannon Macklem, PTA
Shannon was born in Washington state and has lived in California and Nevada prior to moving to Lake Havasu City in 2004. She spent her earlier years assisting in running her family construction business and even ventured in owning a franchise restaurant.

One of her greatest pleasures, however, has been finding her passion in physical therapy. Shannon graduated from the accredited program at Mohave Community College as a Physical Therapist Assistant in 2014. She started her career in inpatient therapy for her first eight years in clinical practice. She is excited to open the doors to outpatient therapy here at Agave Physical Therapy.

Mason Morgan, Physical Therapy Technician
Mason was raised in a small town in northern Washington, called Omak. Mason moved to Lake Havasu City during the summer of 2021. After high school, he obtained his CrossFit Level 1 and his Personal Trainer Certification from the Nation Academy of Sports Medicine (NASM). He has been a personal trainer and CrossFit class instructor for 5 years. Mason is now using his prior knowledge and experience in the exercise field in his newer role as our physical therapy technician.

When Mason is not working, he enjoys sports training inside and outside of the gym, playing pool, and is always eager for new learning opportunities.

Arianne Stacy, Front Desk

Arianne moved to Lake Havasu City in 1984 from Boulder Colorado.  She is a 1993 graduate of Lake Havasu High School.  Before joining the team at Agave Physical Therapy, Arianne previously worked in the hotel & hospitality industry for over 20 years.  She held positions in a variety of departments and was most recently the sales and catering manager at a local resort.  She is excited to grown in a new career path at Agave Physical Therapy.

Arianne enjoys spending time with her husband Beau and her two sons Justin & Zack.  They enjoy spending time in the beautiful outdoors in Lake Havasu City, especially time out on the lake.

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