The Center for Rehabilitation at Hudson Valley Hospital Center’s new Sports Medicine program specializes in injury prevention, performance enhancement and rehabilitation of sports injuries. Our team of highly-trained therapists work with the area’s top orthopedic specialists. They are part of The Hospital for Special Surgery’s Rehabilitation Network, and hold prestigious accreditations attesting to their expertise. Each team member offers specialized skills, significant experience and a dedication to improving patients’ lives. The center now also offers SportsMetrics ™ ACL Injury Prevention program. ACL injuries can sideline an athlete for 6 to 12 months. We also offer Return to Sports Programs to help athletes recover from injuries more quickly and return to sports safely. The Center for Rehabilitation has consistently maintained a patient satisfaction rating or 90 percent and above.

Foot or ankle injuries? Dr. Katherine Ma, a fellowship trained foot and ankle orthopedic surgeon, is part of HVHC's team of physicians who work with trained physical therapists to help you recover faster. Click here to learn more about Dr. Katherine Ma and see a video where she talks about foot and ankle conditions on Health Smart, a health education show produced by Hudson Valley Hospital Center.

Call 914-734-3455 for an appointment or for more information.

Meet our Team

Kyle Mack, PT, DPT
Clinical Manager, Department of Rehabilitation

Kyle Mack has worked at HVHC’s Center for Rehabilitation for 16 years and has served as clinical director since 2004. He has been an Adjunct Professor at New York Medical College since 2009. Kyle holds a Doctor of Physical Therapy degree from Utica College and is a certified instructor of the SportsMetrics TM ACL injury prevention and athletic performance enhancement training. Other certifications include Certified Functional Manual Therapist (2005); Functional Orthopedic Certified (2005) and Bachelor of Arts degree in Physical Therapy (1992).

“I am enthusiastically committed to the advancement and practice of the profession of physical therapy. Throughout the course of my professional career, I have sought out what I have considered the best practice techniques and studied them. My latest passion is the prevention of ACL injuries in the young female athlete, which are currently at epidemic levels.”

John R. Astrab PT, DPT, OCS, MS, CSCS

John Astrab has over 15 years experience in both corporate fitness and outpatient physical therapy. John obtained a post-professional Clinical Doctorate in Physical Therapy from the University of Saint Augustine and a Master’s of Science degree in Physical Therapy from Mercy College, a Master’s of Science degree in Exercise Physiology from Long Island University and a Bachelor of Arts degree from Manhattan College. John is a board certified orthopedic clinical specialist in physical therapy (OCS) and a Certified Strength & Conditioning Specialist (CSCS). He is also a member of the American Physical Therapy Association (APTA), the American Academy of Orthopedic Manual Physical Therapists (AAOMPT) and the National Strength & Conditioning Association (NSCA), as well as being a member and holding credentials from the American College of Sports Medicine (ACSM) and United States Weightlifting Federation (USWF).

"I my practice I use an eclectic, assessment based and evidence based treatment approach in the management of pain and movement dysfunctions. As a functional manual physical therapist, I employ soft tissue mobilization and joint mobilization techniques aimed at mechanical barriers, coupled with neuro-muscular re-education and motor control training to normalize normal movement patterns.”- John Astab

Chitra Taneja, PT, DPT, MS

Chitra Taneja has more than 10 years experience as a physical therapist and has worked as an athletic trainer for both high school and college sports teams. Chitra holds a Doctor of Physical Therapy degree as well as Master’s of Science degrees in Physical Therapy and Sports Psychology. She also holds Bachelor’s of Science degrees in Psychology and Education (Athletic Training). She has been a licensed Physical Therapist since 2002 and an Athletic Trainer since 1991. She is a member of APTA and NATA.
“I implemented the Athletic Training program and was head Athletic Trainer at South Suburban College in Illinois and also implemented the Athletic Training program and was head Athletic Trainer at Rye Country Day School. I served as the head Athletic Trainer for a semi-professional hockey team in Michigan. I have worked extensively with male and female athletes to help improve their performance and return to sports.’’


Renee Lemieux PT, DPT

Renee Lemieux graduated from Hunter College with a Bachelor of Science degree in physical therapy. She completed a Master’s degree in Orthopedics with focus in manual therapy and then her Doctor of Physical Therapy degree from Touro College in 2009. Her research was a pilot study exploring the efficacy of eccentric exercise in tennis elbow.
Main interests are movement re-education, postural training and manual therapy.
“I have worked at Hudson Valley Hospital Center for the past 12 years in the orthopedic department and have had the privilege to treat several orthopedic conditions. My past experience as a professional dancer with a NYC base company has given me the opportunity to explore movement mechanics, core stability and the importance of postural training.”


At the Hand Center at Hudson Valley Hospital Center we specialize in treating hand injuries and conditions of the hand and upper extermity. From workplace injuries to carpal tunnel syndrome and other repetitive stress injuries, we are the experts in surgical and non-surgical treatments for disorders of the hand, wrist or elbow. From surgery to rehabilitation, our team provides a comprehensive program to help you recover faster.

In addition to our skilled physicians, orthopedic specialists and surgeons, HVHC has a Center for Rehabilitation with three licensed occupational therapists and one certified hand therapist who have intricate knowledge of upper extremity function and structure. They work with patients to prevent injury or impairment, restore gross and fine motor skills, and enhance participation in activities of daily living. Our Center for Rehabilitation is a member of the Hospital for Special Surgery Network so you know you are getting the most advanced treatment.


For additional information about the Hand Therapy Program or to schedule an appointment, please call: 914-734-3251.

Our Team

Dr. Ari Mayerfield specializes in the diagnosis and treatment of disorders and injuries of the hand, wrist, forearm, and elbow in patients from infants to adults. A graduate of Cornell and Harvard Universities and the Sackler School of Medicine, Dr. Mayerfield completed his fellowship at the world-renowned Christine M. Kleinert Institute for Hand and Microsurgery where many firsts in hand surgery were performed including the first hand transplant performed in the United States, the first successful technique for primary flexor tendon repair, as well as many others.

He has specialized training in the minimally invasive treatment of diseases involving the hand, wrist, forearm and elbow. These include arthroscopy, endoscopic techniques, enzymatic treatments and microsurgery, all of which expedite recovery and minimize downtime.

Conditions and injuries he treats include, but are not limited to:
- Carpal tunnel syndrome and nerve compression (i.e., ulnar nerve/cubital tunnel)
- Sports injuries, fractures and dislocations
- Ligament injuries (sprains), tendon injuries, tendonitis (trigger finger, tennis elbow, golfers elbow, and De Quervain's tendonitis)
- Ganglion cysts, nerve injuries, arthritis and stiff joints
- Dupuytren's contracture, infection, vascular disorders, and brachial plexus injuries.
- Special interests include upper extremity trauma and sports injuries, post-traumatic reconstruction, tendon disorders, peripheral neuropathy, arthroscopy, and microsurgery.

Dr. Mayerfield has performed over 2,000 surgeries, including over 700 cases exclusively involving the upper extremity and specializes in the treatment of diseases of the hand, wrist, elbow, peripheral nervous system, as well as microsurgery. His practice is focused on restoring hand and upper extremity function through both non-surgical and surgical means, and helping patients get back to enjoying the activities of daily life. The majority of patients he treats ultimately do not require surgery. To make an appointment with Dr. Mayerfield, call 914-293-8700.

Dr. Mayerfield attended Cornell University (B.S. 1999) and Harvard University before attending the Sackler School of Medicine (M.D. 2007). He is an Assistant Professor of Hand Surgery at New York Medical College and a candidate member of the American Society for Surgery of the Hand. He completed his General Surgery training at the University of Illinois at Chicago, the highest volume trauma residency program in Chicago, where he was awarded ‘Teacher of the Year’. Following graduation, he went on to complete a fellowship at the Christine M. Kleinert Institute for Hand and Microsurgery at the University of Louisville. During his training, Dr. Mayerfield authored a book chapter on alternative imaging modalities of the Hand, and researched a new surgical technique for treatment of wrist instability.

Hudson Valley Hospital Center has Certified Hand Therapists on staff


This certification is voluntary and difficult to attain. To obtain certification in hand therapy, a therapist must have 5 years of clinical experience as an Occupational or Physical Therapist, including 4,000 or more hours in direct practice of hand therapy. The therapist must pass a comprehensive test of advanced clinical skills and theory in upper quarter rehabilitation. In addition, a therapist is required to demonstrate continued professional development and competency by re-certifying every 5 years.

The Certified Hand Therapy credential offers assurance to the public that a therapist has achieved the highest level of competency in hand therapy and stays up to date with practice within the field.

For additional information on the Certified Hand Therapist click here.






America’s love affair with food is as legendary as it is deadly. The country’s recent focus on the health and economic benefits of the  “field to plate” movement is growing like a weed through the country and just may be the serving needed to save a sick and uneasy nation.

Hudson Valley Hospital Center is an acute care hospital faced with the reality of everyday illness and mortality. Its physicians and staff would like to stem the tide of illness and coach patients to a better day of wellness and longevity. The hospital’s vision for change is being crafted by national thought leaders and a celebrity chef.

Led by John Federspiel, hospital president, representatives from national organizations are joining together with the hospital to design this new approach including leading voices from Harvard, Stanford, Culinary Institute of America, New York Botanical Gardens, and Glynwood Institute For Sustainable Food and Farming. The hospital has adopted “Sanitas per escam”, or “Health through food”, as its mantra, as more and more research from around the globe supports the premise that a patient’s recovery can be positively influenced by their diet. Hudson Valley Hospital Center believes it has a responsibility to incorporate nutrition into every medical care plan of every diagnosis treated, and to hopefully discharge that patient with an understanding of why their diet is so very important to their health.

Fueled by the country’s elevated rates of obesity, heart disease and diabetes, a green wave of good health is finally taking root. Scientific findings support the health impact of a plant-based diet and are finding their way into hearts and minds of businesses, patients and physician practices. Americans may just be starting to get it but only one hospital is taking action.  Hudson Valley Hospital Center, has initiated a multi-phase program including:

“Seeds for Health” – an organic healing garden



 With direction from Stone Barns Center for Food and Agriculture, a non-profit farm and education center located in Pocantico Hills, the Hospital built and designed an organic garden of herbs and vegetables used to educate and nourish cancer patients as well as serve as a place of relaxation and contemplation. Community and Hospital volunteers tended the garden and produce was used in nutrition education classes with cancer patients. 




Think Pink, Live Green

alt In April 2012, Hudson Valley Hospital Center opened its organic garden for healing with a guest visit from Dr. Marisa C. Weiss, President and Founder of, a global non-profit organization and the fastest growing website on cancer and health. Dr. Weiss spoke on her “Think Pink, Live Green” campaign, which   stresses the importance of lifestyle changes, including healthier eating, as a way to help prevent breast cancer and improve the health of those already diagnosed with the disease.





Farmer's Markets on Hospital campus 


In 2012, Hudson Valley Hospital Center began a monthly Farmer's Market on campus to offer its employees and the public access to fresh local and organic produce. The farmer’s market featured produce grown by local farms, including W. Rogowski Farm, Continental Organics, Glynwood Farm, Hemlock Hill Farm, Hilltop Hanover Farm and Environmental Center, and others.  Staff from HVHC’s Nutrition and Education departments provided information to help integrate healthy eating practices into everyday life.  Master gardeners from Cornell University Cooperative Extension Westchester County answered questions about gardening issues. The markets were expanded to twice a month in the 2013 season with new vendors added.



Harvest for Health” Food Service 


In May of 2013, Hudson Valley Hospital Center implemented a new food service, Cura Hospitality, offering delicious, healthful meals for patient therapeutic care that incorporates locally sourced foods and from scratch cooking.

"Cura’s passion for chef-inspired menus, scratch cooking and their sustainable practices through its FarmSource program, clearly define their homegrown and healthy approach to dining.  They partner with some of the finest local farms and food producers and they support our Harvest for Health program, which promotes field to plate meals for patient therapeutic care,” said Hudson Valley Hospital President John Federspiel.




Dempsey House Teaching/Demonstration Kitchen


A teaching/demonstration kitchen has been constructed for patients and the community in the historic Dempsey House. The new Chef Peter X. Kelly Teaching Kitchen is offering cooking classes to patients, school children and the general community in an effort to promote healthy eating. Celebrity Chef Peter Kelly has served as an advisor to the kitchen, designed by architect Joseph Pallante, AIA. For more information on the new teaching kitchen and to learn about scheduled classes, call 914-734-3780.









Hudson Valley Restaurant Week


In keeping with its new direction of "Food as Medicine", Hudson Valley Hospital Center is proud to be a major sponsor of Hudson Valley Restaurant Week November 4-17.





Drs. Andrew Ashikari, C. Andrew Salzberg, R Michael Koch and Pond Kelemen


“Before coming to the Cancer Center at Hudson Valley I spoke to a surgical oncologist at another hospital. All the right words were said but it didn’t make me feel better. I decided to go for a second opinion. When I walked in and met Dr. Pond Kelemen for the first time he looked at my charts, looked at me with such warmth, smiled and took my hand and said you’re going to be ok. From that moment on I truly believed that I would be. That’s patientology.”

- Kimberly Gerosa Ashikari Breast Center patient.


As a lifelong resident of Cortlandt Manor, Kimberly Gerosa had witnessed Hudson Valley Hospital Center evolve from a nice little hospital to the amazing facility it is today. Kim says she had always had a positive impression of the hospital. Her internist and gynecologist are affiliated with it, but now she knows and appreciates the hospital on a much deeper level.


Kim’s journey with breast cancer began after her routine mammogram in December of 2011 indicated a problem. The radiologists at Hudson Valley recommended an ultra- sound, which confirmed Kim needed a biopsy. Everyone in this imaging department was extremely nice, and very compassionate in helping Kim deal with this news – from the technicians to the radiologists. At this point in time, the Cancer Center at Hudson Valley was brand new. Not knowing much about it Kim went at first to another hospital to speak to a surgical oncologist. 


Kim was told she had the early stages of breast cancer. All the right words were said but Kim did not feel at ease with this doctor. Her internist recommended she go and speak to the doctors at the Ashikari Breast Center at Hudson Valley Hospital Center. From the moment Kim met Dr. Kelemen she knew this was the right decision for her. She had a lumpectomy in January of this year. Unfortunately she learned soon after, on her birthday actually, that her birthday surprise was that the cancer had moved to her lymph nodes taking  her cancer from stage 1 to stage 2 .Consultations were arranged with Drs. Azim Ajaz, director of oncology services, and Chika Madu, Medical Director for Radiation Oncology, and Dr. R Michael Koch, plastic surgeon specializing in breast reconstruction. They designed a treatment plan that was right for her, which began with a 5-month course of chemotherapy. Kim said that Dr. Aijaz’ compassion and intelligence helped her get through the treatments.


While going through chemotherapy was a tough time in her life, she said the Hudson Valley Hospital Center team did everything they could to make it easier for her.  In June, after finishing her chemotherapy treatment Kim came back to Hudson Valley to have a bi-lateral mastectomy. She was in the hospital for 3 days and everything was done to make her feel as comfortable as possible. The night of her surgery the nurses were wonderful, checking constantly to make sure she had everything she needed. And even though she was not a candidate for the one-step mastectomy, the doctors were able to perform skin and nipple sparing . Nancy, Dr Koch’s Surgical Physician Assistant, has been there for all Kim’s post op questions and concerns.


Kim’s breast cancer journey is not over, but all indicators point to a full recovery and a healthy future for her. She said going to a comprehensive cancer center like the Cheryl R. Lindenbaum Cancer Center made her journey a lot easier, because every doctor and course of treatment Kim needed was available at the Center. And it’s all right here for her in her own backyard.



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