Karan Johar, MD
Double Board-Certified Pain Management & Spine Physician
Dr. Karan Johar is a double board-certified physician specializing in interventional pain management, minimally invasive spine procedures, and functional restoration. He serves patients throughout New York and beyond, focusing on evidence-based treatments designed to reduce pain and improve quality of life.
Dr. Johar completed fellowship training in Pain Medicine at the Medical College of Wisconsin and is board certified in Physical Medicine & Rehabilitation and Pain Medicine. He holds an academic appointment at New York University and has extensive experience treating complex spine, nerve, and musculoskeletal conditions.
His practice emphasizes individualized care, combining advanced procedural techniques with a comprehensive understanding of rehabilitation and long-term recovery. Dr. Johar has a special interest in minimally invasive spine interventions, neuromodulation, regenerative medicine, and innovative approaches to chronic pain management.
Board Certifications
Physical Medicine & Rehabilitation
Pain Medicine
Hospital Affiliations
NYU Langone Health
Lenox Hill Hospital
Manhattan Eye, Ear & Throat Hospital
ROY BERENHOLTZ, MD
Board-Certified Anesthesiologist
Dr. Roy Berenholtz is a board-certified anesthesiologist specializing in adult and pediatric anesthesia. He completed his residency in Anesthesiology at Albert Einstein College of Medicine and fellowship training in Pediatric Anesthesiology at UPMC Children’s Hospital of Pittsburgh.
As Director of Anesthesia at Park Avenue Medicine & Surgery, Dr. Berenholtz provides safe, compassionate sedation and anesthesia services for both children and adults. He is committed to creating a comfortable, stress-free experience for patients and families.
John Shiau, MD
Board-Certified Neurosurgeon
Dr. John Shiau is a nationally recognized neurosurgeon specializing in minimally invasive and endoscopic spine surgery. After completing neurosurgical training at Mount Sinai Medical Center, he pursued advanced fellowship training in Germany focused on minimally invasive neurosurgical techniques.
With more than three decades of experience, Dr. Shiau focuses on outpatient surgical treatment of spine and nerve disorders, helping patients achieve lasting relief through advanced minimally invasive procedures.
Gbolahan Okubadejo, MD
Board-Certified Orthopedic Spine Surgeon
Dr. Gbolahan Okubadejo is a fellowship-trained orthopedic spine surgeon specializing in the treatment of cervical, thoracic, and lumbar spine disorders. He has published extensively in leading orthopedic journals and has presented research at major spine conferences worldwide.
His practice emphasizes minimally invasive techniques, individualized treatment planning, and comprehensive patient care for degenerative spine disease, deformity, and complex spinal conditions.
Alejandro Badia, MD, FACS
Board-Certified Orthopedic Hand & Upper Extremity Surgeon
Dr. Alejandro Badia is an internationally recognized orthopedic surgeon specializing in disorders of the hand, wrist, elbow, and shoulder. He completed orthopedic surgery training at NYU and advanced fellowship training in hand and upper extremity surgery.
Founder of the Badia Hand to Shoulder Center, Dr. Badia is known for his expertise in minimally invasive surgery, sports injuries, arthritis care, and complex upper-extremity reconstruction.
Arie (Eric) Dadush, MD
Board-Certified Sports Medicine Physician
Dr. Eric Dadush is a board-certified Family and Sports Medicine physician specializing in nonsurgical orthopedic care, concussion management, and musculoskeletal medicine. Following residency training in Family Medicine, he completed fellowship training in Sports Medicine and served as a team physician for collegiate and professional athletic programs.
His practice focuses on helping patients return to peak performance through evidence-based sports medicine and injury management.
Anjuli Cogman, DO
Board-Certified Emergency Medicine Physician
Dr. Anjuli Cogman is a board-certified Emergency Medicine physician with extensive experience in acute care, sports medicine, and orthopedic urgent care. She serves as Director of Orthopedic Urgent Care at Park Avenue Medicine & Surgery.
Dr. Cogman combines her emergency medicine expertise with a patient-centered approach to evaluating and treating orthopedic injuries and sports-related conditions.
Vassilis Panagopoulos, MD
Double Board-Certified Psychiatrist
Dr. Vassilis Panagopoulos is board-certified in both Adult Psychiatry and Addiction Psychiatry. Trained at Washington University in St. Louis and Yale University, he provides comprehensive psychiatric care including medication management and psychotherapy.
His practice focuses on mood disorders, anxiety, addiction treatment, and behavioral health, utilizing both traditional and telemedicine-based care models.
Matthew W. Lorber, MD, MPA
Child & Adolescent Psychiatrist
Dr. Matthew Lorber is a nationally recognized child and adolescent psychiatrist and Director of Child and Adolescent Psychiatry at Lenox Hill Hospital. He specializes in ADHD, anxiety, depression, eating disorders, and pediatric psychopharmacology.
An award-winning educator and speaker, Dr. Lorber is committed to advancing children's mental health through evidence-based treatment and patient advocacy.
Russell Silver, MD
Board-Certified Physiatrist & Sports Medicine Specialist
Dr. Russell Silver is a board-certified Physical Medicine & Rehabilitation physician with additional certification in Sports Medicine. He specializes in rehabilitation, pain management, functional restoration, and treatment of musculoskeletal disorders.
His patient-centered approach focuses on restoring mobility, improving function, and enhancing quality of life.
Karan Chopra MD
Board-Certified Plastic & Reconstructive Surgeon
Dr. Karan Chopra is a board-certified plastic surgeon recognized for advanced aesthetic and reconstructive surgical techniques. Trained at Johns Hopkins Hospital, he specializes in facial rejuvenation, cosmetic surgery, and complex reconstructive procedures.
His approach combines surgical precision with an artistic eye to deliver natural-looking results tailored to each patient.
Claudia Orozco, LME
Licensed Medical Esthetician
Claudia Orozco is a licensed esthetician specializing in advanced skincare, facial sculpting, and rejuvenation treatments. Working closely with the practice’s aesthetic and plastic surgery team, she provides individualized treatments designed to improve skin health and appearance.
She is known for her attention to detail and commitment to exceptional patient care.
Sarah Richards, DPM
Board-Certified Podiatrist
Dr. Sarah Richards is a board-certified podiatrist specializing in foot and ankle medicine and surgery. She treats a wide range of conditions including sports injuries, plantar fasciitis, diabetic foot care, and ingrown toenails.
Her goal is to restore mobility and function while providing personalized, comprehensive podiatric care.
Jason (Yong Jun) Cho, DPM
Foot & Ankle Surgeon
Dr. Jason Cho is a foot and ankle surgeon specializing in minimally invasive bunion correction, hammertoe surgery, sports injuries, and reconstructive foot procedures. He completed advanced surgical training at Mount Sinai Beth Israel and has performed more than 1,400 surgical procedures.
His practice emphasizes patient education, collaboration, and durable long-term outcomes.
Jeffrey Yellin, DPT
Doctor of Physical Therapy
Dr. Jeffrey Yellin is a Doctor of Physical Therapy with extensive experience in rehabilitation, sports performance, injury prevention, and strength conditioning. He has worked with professional athletes across major sports leagues and has helped build one of the Northeast’s largest outpatient physical therapy organizations.
His treatment philosophy focuses on maximizing recovery, performance, and long-term function.
Thomas Spagnoli, DPT
Board-Certified Orthopedic Physical Therapist
Physical Therapist Assistant
Thomas Spagnoli is a licensed Physical Therapist Assistant with extensive experience helping patients recover from orthopedic injuries, spine conditions, post-surgical procedures, and chronic musculoskeletal pain. He earned his Associate of Science degree in Physical Therapy from Suffolk County Community College and has dedicated his career to improving mobility, function, and quality of life through individualized rehabilitation programs.
Tom works closely with physicians and physical therapists to deliver evidence-based treatment plans focused on restoring strength, reducing pain, and helping patients safely return to their daily activities. Known for his compassionate approach and commitment to patient care, he is dedicated to supporting each patient throughout their recovery journey.
Education
Suffolk County Community College, Associate of Science (A.S.), Physical Therapist Assistant
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Jerrold (Jerry) Mann, PT
Physical Therapist
Jerrold “Jerry” Mann, PT, is a highly respected physical therapist and founder of Riverdale Physical Therapy. For more than six decades, he has dedicated his career to helping patients restore mobility, recover from injury, and improve their quality of life through personalized, hands-on rehabilitation. He established Riverdale Physical Therapy over 50 years ago, creating a practice built on clinical excellence, compassion, and long-term patient relationships.
Throughout his career, Jerry has cared for multiple generations of families throughout the Bronx and greater New York community. Known for his individualized approach and commitment to treating the whole person, he has earned the trust and loyalty of patients seeking expert rehabilitation and functional recovery.
His legacy continues to influence modern physical therapy practice, emphasizing hands-on care, patient education, and the importance of building meaningful therapeutic relationships that support lasting recovery and wellness.
Jordan Placella PT
Doctor of Physical Therapy
Dr. Jordan Placella is a Doctor of Physical Therapy dedicated to helping patients recover from injury, restore mobility, and achieve their highest level of physical function. He earned his Doctor of Physical Therapy degree from Russell Sage College after completing a Bachelor of Science in Biology at SUNY Oneonta.
With a strong foundation in orthopedic rehabilitation and movement science, Dr. Placella develops individualized treatment programs tailored to each patient's goals and functional needs. His approach combines evidence-based rehabilitation techniques with patient education to promote long-term recovery and injury prevention.
In addition to his clinical training, Dr. Placella is an ACE Certified Personal Trainer and has a strong interest in fitness, performance optimization, and endurance athletics. His background allows him to help patients safely return to work, daily activities, and athletic pursuits while building strength, mobility, and confidence.
Education
Doctor of Physical Therapy, Russell Sage College
Bachelor of Science in Biology, SUNY Oneonta
Certifications
ACE Certified Personal Trainer
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Mary “Miki” Giffune, DPT
Doctor of Physical Therapy
Dr. Mary “Miki” Giffune is a Doctor of Physical Therapy with extensive experience helping patients recover from orthopedic injuries, improve mobility, and return to the activities they enjoy. She earned her Doctor of Physical Therapy degree from Columbia University and combines advanced clinical training with a patient-centered approach to rehabilitation.
Dr. Giffune develops individualized treatment plans focused on restoring strength, movement, and function while addressing the underlying causes of pain and physical limitations. Her background in movement science and rehabilitation allows her to work with patients of all ages, from active individuals recovering from injury to those seeking improved mobility and long-term wellness.
Prior to her physical therapy training, Dr. Giffune earned a Bachelor of Arts in Biology from the University of Colorado Boulder, where she also pursued studies in dance. This foundation contributes to her appreciation of movement, balance, and functional performance in both rehabilitation and injury prevention.
Education
Doctor of Physical Therapy, Columbia University
Master of Science in Physical Therapy, Columbia University
Bachelor of Arts in Biology, University of Colorado Boulder
Russ Warren, MSPT, ATC, DOMT
Physical Therapist | Orthopedic Manual Therapy Specialist
Russ Warren is an internationally trained physical therapist specializing in orthopedic manual therapy, musculoskeletal rehabilitation, and geriatric care. He earned his degree in Orthopedic Manual Therapy in the Netherlands and has spent more than two decades teaching, lecturing, and practicing throughout the United States, Europe, Australia, New Zealand, and Southeast Asia.
In addition to his clinical practice, Russ has served as an adjunct professor at Stony Brook University and is recognized for his expertise in hands-on treatment techniques designed to restore movement, reduce pain, and improve function. His approach integrates evidence-based orthopedic care with a broader focus on overall wellness and healthy aging.
Beyond physical therapy, Russ is a Reiki Master, Hatha Yoga instructor, and Transcendental Meditation instructor. A former Golden Gloves Champion and retired professional boxer, he has also served as a trainer, mentor, and trustee of the International Boxing Hall of Fame. His unique combination of clinical expertise, athletic experience, and holistic wellness training allows him to provide comprehensive, patient-centered care focused on helping individuals achieve their highest level of health and performance.
Specialties
Orthopedic Manual Therapy
Musculoskeletal Rehabilitation
Geriatric Physical Therapy
Functional Performance & Wellness
Pain Management & Movement Restoration
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Jihyuk Park, MD(DKM), L.Ac., Ph. D.
Integrative Acupuncture Specialist
Dr. Jihyuk Park is a licensed acupuncturist and integrative medicine specialist with more than 18 years of clinical experience. Trained in Korean Medicine and rehabilitation medicine, he combines traditional acupuncture techniques with modern evidence-informed treatment approaches.
His practice focuses on pain management, functional restoration, and whole-person wellness.
Chelsea Blanco, BS
Director of Business Development & Strategic Partnerships
Chelsea Blanco serves as Director of Business Development & Strategic Partnerships for Park Avenue Medicine & Surgery. She leads growth initiatives, strategic alliances, and community outreach efforts that support practice expansion and enhance patient access to care.
Fluent in English, Spanish, and Portuguese, she brings a global perspective and strong relationship-building expertise to the organization.