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After years of working in a traditional "big box" sports and orthopedic clinic, Dr. Nick Hadinger was frustrated by working in a system where the insurance company was the customer and the patients were simply just a number in the system. It was increasingly difficult to work in a model that dictated what therapists should or shouldn't do with patients, how often they should come and even how much time could be spent with them solely based on insurance reimbursement rates; not what was best for that particular patient. In 2019, Nick created Streamline to change that narrative.

 Our 1-on-1 treatment model means no techs, no aides and no wasted time in therapy. Each session is spent entirely with your Doctor of Physical Therapy who will create a personalized plan of care for you. Our therapists specialize in keeping you participating in your favorite activities while identifying the root cause of the issue to ensure long term results. Our therapists are athletes themselves and participate in your sport with you to ensure optimal return to sport progressions and to keep you perform at a high level.

Our New Model Leads To:

  •  Fewer overall therapy visits

  • Less frequent visits and more time for you 

  • No wasted time in sessions

  • Long lasting outcomes; no band-aid "fixes" that are temporary

  • Increased self efficacy and patient autonomy in managing your injury

  • Less time away from training

  • Reduced surgeries and medications 

We Specialize In:

  • Active Adults/Those Who Exercise Regularly

  • Youth Athletes

  • Swimmers and Triathletes

  • Golf & Tennis Players

  • Martial Arts Injuries

  • Shoulder Injuries and Overhead Athletes

  • Low Back and Neck Pain

  • Hip and Knee Injuries

  • Return to Sport Rehab

Numbers Don't Lie

To date, we currently average less than half the national average number of visits needed to treat a variety of different injuries! That leaves more time on your hands and more money in your pocket. 


Click on your therapist to learn more about them!



Strength Coach/Personal Trainer


Administrator & Billing Specialist

Our Why:

We believe in providing optimal results in less visits through a new, effective and efficient healthcare model to help active adults who care about their health and quality of life by changing the way private practice physical therapy is done and putting the patient first.​



High level, 1-on-1 individualized care provided only by our Doctors of Physical Therapy to get you back to everything you want to do through their specialized knowledge about your injury and return to sport requirements for your activity.

  • Sport/activity specific therapists to optimize return to sport

  • No gimmicky, hands off treatment modalities

  • Latest rehab technology used with professional teams 

    • Blood Flow Restriction Therapy, Dry Needling, Cupping, IASTM

  • Flexible scheduling within 48 hours of contacting us


Dr. Nick Hadinger PT, DPT, USAW-1

Dr. Nick Hadinger is a licensed physical therapist and Arizona native specializing in orthopedic and sports rehab. Nick graduated from Northern Arizona University as a Doctor of Physical Therapy and obtained his undergraduate degree in Physiology from the University of Arizona. He competed as a Division I athlete on the men's swim team for University of Arizona and at the US Olympic Trials in 2012. He now races in triathlon and is training for Oceanside 70.3 and Coeur D'Alene 70.3 Ironman races this season.


Nick has experience in high level orthopedic and sports rehab working with a wide range of clients from Ironman athletes, NFL combine and NBA players, Olympic medalists to weekend warriors. He is a member of the USA Swimming Sports Medicine Network; traveling with and treating Team USA athletes at various events. He has also served as a therapist for athletes competing at NCAA Division 1 Swimming & Diving National Championships. Nick is a certified USA Weightlifting Coach, a member of the National Strength and Conditioning Association and works with local swim teams in the Phoenix/Scottsdale area providing expert dryland programming.


He has served as the Clinical Instructor for doctoral students attending George Fox University and University of the Pacific. 


Nick specializes in both non-operative and post-operative injuries involving the shoulder, back, hips and knees and aims to KEEP you active while addressing your injury.

In his free time he enjoys camping, swimming, cycling, snowboarding and finding the best foodie spots in town with his 2 dogs and wife Lindsay. 

Nick Bio

Degrees & Specialty Certifications

  • Doctor of Physical Therapy - Northern Arizona University

  • Bachelor of Science in Physiology - University of Arizona


  • USA Olympic Weightlifting Coach (USAW-1)

  • USA Swimming Sports Medicine Network

  • ​Certified in Blood Flow Restriction Therapy

  • Certified in Dry Needling through IDN

  • Functional Movement Screen (FMS)

  • Advanced course work in NAIOMT (North American Institute of Orthopedic Manual Therapy)

  • RockTape Functional IASTM Certification (Instrument Assisted Soft Tissue Mobilization) 

  • RockTape Functional Taping Certifications

Ryan Bio

Dr. Ryan Spencer PT, DPT, OCS, CSCS

Dr. Ryan Spencer is from Long Island, NY and decided to move to Arizona in January of 2017. Ryan is a former football player, discus/shotput thrower, powerlifter and is currently a blue belt in Brazilian Jiu-Jitsu at Gracie Barra. He has experience treating thousands of patients from varying backgrounds but now focuses on treating active adults, martial artists and all athletes.

For over 2 years, Ryan was the director of an outpatient orthopedic clinic and became tired of the corporate setting. Frustrated with corporate demands, insurance restrictions and having his patients be a metric of profitability, Ryan decided to team up with Streamline Performance PT so he can truly give each patient the high-quality care they deserve.

Despite his many certifications, Ryan is always striving to improve his ability to help his patients and is currently enrolled in a program to become a Certified Orthopedic Manual Therapist (COMT), joining an elite group in top percentile of manual therapists in the country. In 2019, Ryan was awarded the Most Outstanding Clinical Instructor Award by Midwestern University.


In his free time Ryan enjoys training Jiu-Jitsu, archery, walking his dog, weightlifting, reading and watching sports. Ryan is a die-hard NY sports fan including the Jets, Rangers, Yankees and Knicks.


Degrees & Specialty Certifications

  • Doctor of Physical Therapy -  Quinnipiac University

  • Bachelor of Health Science - Quinnipiac University

  • Board Certified Orthopedic Specialist (OCS) from American Board of Physical Therapy Specialties

  • Blue Belt in Brazilian Jiu Jitsu

  • Certified Strength and Conditioning Specialist (CSCS) from NSCA

  • Certified in Dry Needling via Spinal Manipulation Institute

  • Certified in Blood Flow Restriction Training

  • EXOS Performance Specialist (XPS)

Dr. Lauren Mueller PT, DPT, CDN, TPI Cert. M2

Lauren Bio

Dr. Lauren Mueller is a Phoenix area native and Xavier HS alum specializing in outpatient orthopedics, sports medicine and rehabilitation. She has trained several 3rd year PT doctoral candidates in their clinical skills as their Clinical Director since 2018. 


Lauren is a certified Titleist Performance Institute instructor, able to train all levels of golfers, by increasing the player’s performance through body function and the golfer’s physical limitations during the golf swing. As a former athlete herself, Lauren has experience working with golfers, tennis players, volleyball athletes, weekend warriors, runners, spin and cycling enthusiasts...she's seen it all! She is beyond excited to be part of the Streamline team, where she is able to dedicate one-on-one time with her clients and give each person the individualized attention they deserve.


For fun, Lauren loves to spend her spare time on the golf course or at local fitness clubs and classes, including spin cycling (Former Certified Spin Instructor via Madison Improvement Club), HIIT training, pilates and hot yoga. On the weekends you can find her with family and friends, at a wedding, on the golf course or out trying the newest restaurants in the valley!


Degrees & Specialty Certifications

  • Doctorate of Physical Therapy - Northern Arizona University

  • Bachelors of Science in Psychology - The University of Arizona

  • Titleist Performance Institute Medical Provider Certification

  • Certified in Selective Functional Movement Assessment (SFMA)

  • Certified in Dry Needling for Orthopedic Rehab and Sports Performance

  • Certified in Advanced Dry Needling for Lumbo-Pelvic Health

  • Certified in Blood Flow Restriction Training

  • Certified Clinical Instructor for Doctorate of Physical Therapy Candidates


Katie Higgins, CSCS

Katie Higgins is Streamline's go to personal trainer! She is a local Phoenix athlete who swam competitively at the Division 1 level for the University of Houston and currently trains for Olympic distance triathlons and mid distance Ironman races! 

Katie comes to us with an amazing background in swimming having been both an athlete and a coach at the club level here in the valley, with her CSCS (certified strength and conditioning specialist). She loves working with active adults and youth athletes and will be leading our club and Masters dryland programs and triathlon specific group training sessions. 

The water is her sanctuary. Whether its a pool, a lake or the beach, you won't catch her without a smile!!!


JoJo Badgley, Administration

JoJo Badgley is our clinic admin and billing expert. She has a degree in medical billing and is a super compassionate person. She not only keeps us on top of all of what we need, but her goal is to better our team daily. She is in charge of scheduling, billing, and insurance benefits verification as well as helping in marketing and event coordination. She truly has a passion to make sure that each client is having a great experience and will go to battle for any insurance need!

JoJo is a certified scuba instructor and absolutely loves the water and what lies beneath! She loves teaching others the joys of what the open waters unveil! She also enjoys spending time with her fiancé and puppy. 

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