Happy patients after joint replacement surgery

Board Certified Orthopedic Surgeon — Mahwah, NJ

Precision Hip & Knee Expertise.
Move Like You Used To.

Dr. Nicholas Alexander combines Johns Hopkins fellowship training with MAKO robotic-arm assisted technology to deliver among the best outcomes in joint replacement surgery.

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Healthgrades Don Bosco Prep Athletics Rutgers University Johns Hopkins University University of Pennsylvania
20+Years of Experience
Top 100Joint Replacement Center in America
5,000+Successful Procedures
4.9★Average Patient Rating
20+Years of Experience
Top 100Joint Replacement Center in America
5,000+Successful Procedures
4.9★Average Patient Rating
20+Years of Experience
Top 100Joint Replacement Center in America
5,000+Successful Procedures
4.9★Average Patient Rating
20+Years of Experience
Top 100Joint Replacement Center in America
5,000+Successful Procedures
4.9★Average Patient Rating
Dr. Nicholas Alexander

Meet Your Surgeon

Dr. Nicholas Alexander

Board Certified Orthopedic Surgeon

Dr. Alexander is a fellowship-trained orthopedic surgeon specializing in total joint replacement and adult reconstruction of the hip and knee. After completing his undergraduate education at the University of Pennsylvania, he earned his medical degree and completed his orthopedic surgery residency at Rutgers New Jersey Medical School, followed by a prestigious fellowship in Total Joint Replacement and Adult Reconstruction at Johns Hopkins University.

He is a member of the Valley Hospital Total Joint Center, recently ranked by HealthGrades as one of the Top 100 Joint Replacement Centers in America. Dr. Alexander is also a trusted team physician for Don Bosco Prep Athletics.

Credentials and affiliations
Read Full Bio

What We Treat

Specialized Orthopedic Care

From joint replacement to sports injuries, we provide comprehensive treatment for conditions affecting your mobility and quality of life.

  • Hip Replacement

    Hip Replacement

    Total and partial hip replacement using the latest robotic-assisted techniques.

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  • Knee Replacement

    Knee Replacement

    Computer-guided total knee replacement with MAKO robotic-arm technology.

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  • ACL Repair

    ACL Repair

    Advanced ACL repair surgery for athletes and active individuals.

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  • Meniscus Surgery

    Meniscus Surgery

    Arthroscopic meniscus repair and torn meniscus surgery.

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  • Joint Injections

    Joint Injections

    PRP therapy and synthetic joint fluid injections for arthritis management.

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  • Sports Medicine

    Sports Medicine

    Comprehensive sports injury diagnosis and treatment.

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Advanced Technology

MAKO Robotic-Arm Assisted Surgery

Dr. Alexander specializes in state-of-the-art MAKO Robotic-Arm Assisted Technology with Triathlon Total Knee implants. The MAKO system creates a personalized 3D surgical plan based on your unique anatomy, allowing for precise bone preparation and optimal implant positioning.

The surgeon maintains full control throughout the procedure, using the robotic arm as a precision instrument — not a replacement. This technology enables a more predictable surgical experience with the potential for faster recovery and better outcomes.

MAKO Robotic-Arm Assisted Surgery System

CT-Based 3D Planning

Personalized surgical plan from your anatomy

Robotic Precision

Sub-millimeter accuracy in bone preparation

Faster Recovery

Optimized implant positioning for better outcomes

Your Journey

What to Expect

From your first consultation to full recovery, we guide you every step of the way.

1

Consultation

Meet with Dr. Alexander to discuss your condition, review imaging, and explore treatment options.

2

Pre-Op Planning

If surgery is recommended, receive a personalized 3D surgical plan and attend our pre-operative teaching class.

3

Surgery

State-of-the-art robotic-assisted procedure at Valley Hospital with Dr. Alexander and his experienced team.

4

Recovery

Personalized follow-up care, case management coaching, and accelerated rehabilitation to get you back to your life.

Recognition

An Award Winning Joint Replacement Program

Led by Founder of Mahwah Valley Orthopedic Associates, Dr. Nicholas Alexander

The Valley Hospital - Valley Health System

A State-of-the-Art Joint Replacement Program

Patients of Dr. Alexander have full access to Valley Hospital's award winning, comprehensive and systematic approach to Joint Replacement.

America's 100 Best Joint Replacement 2015 - Healthgrades

An Award Winning Program & Staff

Dr. Alexander is a member of the Valley Hospital Total Joint Center, which was recently ranked by HealthGrades as one of the Top 100 Joint Replacement Centers in America.

Ready to learn more?

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Patient Stories

We Don't Call Ourselves Top-Rated. Our Patients Do.

(01)

"From my very first appointment, Dr. Alexander made me feel heard. He explained the MAKO technology, walked me through every step, and my knee replacement recovery has been faster than I ever imagined. I'm already back to walking my neighborhood every morning."

Christine M.

Mahwah, NJ

(02)

"I put off my hip surgery for years because I was nervous. Dr. Alexander and his team put those fears to rest. The whole experience, from pre-op to recovery, was smooth and professional. Six months later, I'm back on the golf course pain-free."

Robert T.

Mahwah, NJ

(03)

"After dealing with hip pain for over a decade, I finally found the right surgeon. Dr. Alexander's expertise and the care I received at Valley Hospital exceeded every expectation. I only wish I had done this sooner."

Patricia L.

Wyckoff, NJ

4.9/5.0

Average Patient Rating

Find Us

Mahwah Office

400 Franklin Turnpike, Suite 100
Mahwah, NJ 07430
Mon, Wed, Thurs, Fri — 9:00am–5:00pm
(201) 818-4344
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See what's possible when life is unrestricted.

Schedule a consultation with Dr. Alexander to discuss your treatment options. We accept most major insurance plans.

(201) 818-4344

Requests are responded to during regular business hours. For urgent needs, please call directly.

Mahwah Office

400 Franklin Turnpike, Suite 100
Mahwah, NJ, 07430

Hours

Mon, Wed, Thurs, Fri
9:00am–5:00pm

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