One clinician. Your full session.
No aides. No double-booking. Every visit is spent directly with a Doctor of Physical Therapy.
SPORTS & ORTHOPEDIC REHABILITATION · HOLLY SPRINGS, NC
Physical therapy. Built to perform.
One-on-one physical therapy and performance coaching to help you recover, build strength, refine lifting mechanics, and prepare for the demands of work, sport, and life.
ONE-ON-ONE VISITSNO REFERRAL REQUIREDSUPERBILLS AVAILABLE
IRON SHARPENS IRON.
ACCESS FITNESS & RECOVERY · HOLLY SPRINGS, NC
LOCATED INSIDE ACCESS FITNESS & RECOVERY
Rehabilitation with room to perform.
Grindstone provides one-on-one physical therapy inside Access Fitness & Recovery Holly Springs, with the space and equipment to progress from rehabilitation to real-world strength and performance.
Explore Access Fitness & RecoveryTHE GRINDSTONE DIFFERENCE
Your goals set the standard.
Your care should be guided by your goals, not by insurance restrictions, productivity quotas, or one size fits all treatment plans.
Build capacity, not dependence.
We combine rehabilitation and strength principles to create lasting resilience, not just temporary relief.
Measure what matters.
Objective testing and clear milestones help turn “feeling better” into confidence that you are ready.
INSIDE ACCESS FITNESS & RECOVERY
Built to move. Built to perform.
Step inside Access Fitness & Recovery and see where Grindstone connects one-on-one clinical care with the space and equipment to progress toward real-world strength and performance.
Come see the spaceACCESS FITNESS & RECOVERY · GRINDSTONE PERFORMANCE PHYSICAL THERAPY
SERVICES
Care that moves with you.
Come in to recover from an injury or to improve how you move, lift, and perform. Every plan begins with your current capacity and the demands of your goal.
Orthopedic rehabilitation
Thoughtful, progressive care for pain, injury, and the physical demands of everyday life.
- Spine
- Shoulder
- Hip
- Knee
- Foot & ankle
Sports & performance
Bridge the gap between feeling better and performing with confidence through objective testing and progressive loading.
- Return to sport
- Strength
- Movement
- VALD testing
Post-operative recovery
A clear plan to restore mobility, strength, and capacity after orthopedic surgery without losing sight of the end goal.
- ACL
- Achilles
- Shoulder
- Joint replacement
Strength & performance coaching
Improve lifting mechanics, build physical capacity, and train toward meaningful performance goals with individualized guidance from a Doctor of Physical Therapy.
- Lifting mechanics
- Strength
- Programming
- Performance testing
WHAT IS LIMITING YOU?
Explore care by body region and activity.
HOW GRINDSTONE WORKS
Assess. Build. Perform.
TREATMENT TOOLS
More than one way forward.
Your care is not built from a preset menu. We choose the tools that fit your needs, then connect them to a clear, active plan.
Exercise & progressive loading
Build strength, restore capacity, and prepare your body for the demands of work, sport, and life through a plan that progresses with you.
Movement analysis & objective testing
Examine how you move and use measurable strength and performance data to establish a baseline, track progress, and guide return-to-activity decisions.
Dry needling & hands-on treatment
Dry needling, manual therapy, and instrument-assisted soft tissue work may improve comfort and mobility when they support your active rehabilitation plan.
Blood flow restriction
Specialized cuff training that can help challenge muscle with lighter loads when heavier training is not yet appropriate or well tolerated.
ZACHARY RHYNER, PT, DPTFOUNDER · GRINDSTONE PERFORMANCE PHYSICAL THERAPY
ABOUT ZACHARY RHYNER, PT, DPT
Experience forged through service, science, and strength.
Recovery is more than something Zac has studied. It is something he has lived through: extensive orthopedic trauma, a transected sciatic nerve with paralysis below the knee, multiple surgeries, chronic pain, and every stage of rehabilitation.
That firsthand experience shapes how he treats. He understands that recovery is rarely linear and that progress may require more than symptom relief. It can mean rebuilding strength, modifying how you move, and finding durable ways to train around lasting limitations instead of waiting for every impairment to disappear.
His perspective was forged through years as an Air Force Special Warfare Combat Controller, including service within a Special Mission Unit operating at the highest level of military special operations. He brings the same preparation, adaptability, and resilience to rehabilitation. The goal is not simply to help you hurt less, but to help you understand your body, rebuild trust in what it can do, and return prepared for work, sport, and life.
DUKE UNIVERSITY
DOCTOR OF PHYSICAL THERAPYU.S. AIR FORCE
SPECIAL WARFARE COMBAT CONTROLLER
DOCTOR OF PHYSICAL THERAPYU.S. AIR FORCE
SPECIAL WARFARE COMBAT CONTROLLER
PRICING
Transparent. All-inclusive.
Every visit is all-inclusive. There are no add-on charges for treatments used during your session.
60 MINUTES
Focused Evaluation
$175
Thorough evaluation, clear plan, and initial treatment for a specific concern.
Book 60 minutes90 MINUTES · MOST COMPREHENSIVE
Performance Evaluation
$225
Extended assessment, movement and strength testing, treatment, and performance planning.
Book 90 minutesOut-of-network superbills are available upon request. Your plan determines whether services are covered and how much it will reimburse.
USING OUT-OF-NETWORK BENEFITS
What is a superbill?
A superbill is an itemized receipt containing the information an insurance company typically needs to process an out-of-network claim, including the provider information, dates of service, diagnosis and procedure codes, charges, and proof of payment. Grindstone can provide one for you to submit directly to your insurer.
Every plan is different. Some plans provide no out-of-network coverage, while others reimburse a percentage of the insurer's allowed amount after you meet an out-of-network deductible. That percentage is not necessarily applied to Grindstone's full fee.
CLAIM RESOURCES
Start by checking your out-of-network physical therapy benefits or calling the member-services number on your insurance card. Submission options vary by plan.
Blue Cross NCOnline member submission and medical claim instructionsAetnaMedical claim forms and member submission guidanceCignaMedical claim instructions, forms, and EOB guidanceUnitedHealthcareOut-of-network medical claim form and superbill requirementsFREQUENTLY ASKED QUESTIONS
Know before you go.
01Do you accept commercial health insurance?+
Grindstone is an out-of-network, cash-based practice and does not bill commercial insurance directly. Payment is due at the time of service. Upon request, we can provide a superbill that you may submit for possible out-of-network reimbursement.
02What about Medicare?+
Grindstone is not enrolled as a Medicare provider and does not furnish or bill Medicare-covered physical therapy. If you are a Medicare beneficiary, please contact us before booking so we can understand what you are seeking and, when appropriate, help direct you to a Medicare-participating provider.
03What is included in my visit?+
Every visit is all-inclusive. The treatments used during your session, including dry needling when appropriate, are selected for your needs and never billed as add-ons.
04What should I expect at my first visit?+
We will discuss what is limiting you, complete a thorough physical assessment, establish a clear plan, and begin treatment. You will leave knowing what we found, what to do next, and how we will measure progress.
05Do I need to be injured or in pain?+
No. A squat that feels restricted, a shoulder that does not move comfortably overhead, a recurring limitation in training, or a desire for objective strength and mobility baselines are all appropriate reasons to come in. We can identify measurable limitations and build a focused plan around what you want your body to do better.
06Do I need to be an athlete?+
No. Grindstone works with active adults and athletes at every level. You only need a meaningful movement, strength, training, work, or performance goal.
07Do I need a referral?+
No referral is needed to receive physical therapy at Grindstone. North Carolina permits direct access to physical therapy, and because Grindstone does not bill insurance directly, you may schedule and begin care without an order from another provider. If you plan to seek out-of-network reimbursement, your insurance plan may separately require a referral or prior authorization before it will reimburse you.
Ready to get back to what moves you?
Put your nose to the Grindstone.
Book your evaluation online, or reach out if you are not sure which appointment is right for you.
Still not sure if Grindstone is the right fit?
Schedule a complimentary 20-minute consultation to talk through what is going on, ask questions, and decide whether working together makes sense.
Schedule a complimentary consultation