Dr. DuBartell is a board-certified physician specializing in family medicine. His clinical interests include heart failure, diabetes, chronic obstructive pulmonary disease, behavioral health and pediatric and adolescent care. Dr. DuBartell attended the State University of New York, Buffalo, where he received his medical degree, and completed his residency at Middlesex Hospital, Middletown. He is certified by the American Board of Family Medicine in family medicine. Dr. Dubartell is rated as an Advanced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Chronic Lymphocytic Leukemia (CLL), Osteoarthritis, Breast Cancer, and Maturity Onset Diabetes of the Young.

Mark Williams is an Orthopedics provider in Bloomburg, Pennsylvania. Dr. Williams is rated as a Distinguished provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Osteoarthritis, Tendinitis, Tenosynovitis, Bursitis, and Hip Replacement.

Dr. Meloy is a residency-trained physician specializing in internal medicine. He earned his medical degree at the University of Pittsburgh School of Medicine before completing his residency at Geisinger Medical Center. He has been practicing internal medicine in his outpatient practice in Bloomsburg for more than 15 years. Dr. Meloy is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Maturity Onset Diabetes of the Young, Hypothyroidism, Type 2 Diabetes (T2D), and Obesity in Children.

Timothy Doyle is a primary care provider, practicing in Internal Medicine in Bloomsburg, Pennsylvania. Dr. Doyle is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Bronchitis, Parainfluenza Virus Type 3, Parainfluenza, and COVID-19.

David Ball is an Orthopedics specialist and a Radiologist in Bloomsburg, Pennsylvania. Dr. Ball is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Tendinitis, Synovitis, Carpal Tunnel Syndrome, Tenosynovitis, and Hip Replacement.

Daniel Feldmann, MD, is the system chief of Sports Medicine for Geisinger Musculoskeletal Institute. A Geisinger employee since 2002, he has been instrumental in shaping the institute’s thriving Sports Medicine Division. He is also the medical director for Geisinger’s athletic training program. In addition, he serves as head team physician for Bucknell and Bloomsburg universities, medical director of the Bloomsburg’s graduate program in athletic training and medical consultant for Danville Area School District.|Dr. Feldmann received his BA in 1987 from Gettysburg College, where he played football. He went on to earn an MEd degree in exercise physiology at Temple University, followed by an MD degree at Thomas Jefferson University. He completed an orthopaedic residency at Geisinger Medical Center in 2001. He spent a year as a fellow team physician, studying sports medicine and arthroscopy at the University of Wisconsin before joining Geisinger’s Orthopaedic Department.|He is board certified by the American Board of Orthopaedic Surgery in both orthopaedic sports medicine and orthopaedic surgery and is a member of the American Academy of Orthopaedic Surgeons, the Pennsylvania Orthopaedic Society, the Arthroscopy Association of North America and the American Orthopaedic Society for Sports Medicine.|Dr. Feldmann’s primary areas of expertise are arthroscopic shoulder surgery for shoulder instability and rotator cuff pathology and knee ligament reconstruction surgery. His clinical interests include shoulder instability, revision shoulder instability surgery and surgery for glenoid bone loss and nontraditional surgical techniques for ACL repair.|He lectures on all of these topics and teaches arthroscopic techniques to other surgeons through the Arthroscopy Association of North America.|Dr. Feldmann’s integrated approach to athletic injuries focuses not only on the latest minimally invasive arthroscopic techniques, but also on nonoperative management. He understands that successful outcomes require excellence in both surgical techniques and rehabilitative programs. Dr. Feldmann is rated as an Advanced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Osteoarthritis, Tendinitis, Frozen Shoulder, and Tenosynovitis.

Dr. Fanelli is a board-certified and fellowship-trained sports orthopaedic surgeon. His clinical interests include complex knee injuries including multi-ligament knee reconstruction, reconstructive knee surgery and rehabilitation. Dr. Fanelli attended The Pennsylvania State University, where he earned his medical degree, and completed his residency at Hamot Medical Center. He completed his fellowship in sports medicine, arthroscopic and reconstructive surgery at Washington Orthopaedic and Knee Clinic. Dr. Fanelli is certified by the American Board of Orthopaedic Surgery. Dr. Fanelli is rated as an Advanced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Hypermobile Joints, Osteoarthritis, Synovial Osteochondromatosis, Tendinitis, and Endoscopy.

Joel Klena, MD, is chief of the Division of Hand and Microvascular Surgery for the Geisinger Musculoskeletal Institute, as well as program director for the Geisinger Orthopaedic Surgery Residency. He assumed this role in 2017 after being the associate residency director for eight years.|Dr. Klena received a BS with honors from the United States Merchant Marine Academy (USMMA) at Kings Point, N.Y., graduating ninth in his class with dual degrees in marine engineering and marine transportation. His time at the USMMA included service in the Gulf War conflict and captaining the Academy’s NCAA Division I Rugby Team.|After fulfilling his naval and maritime commitments, he attended medical school at the State University of New York’s Upstate Medical College in Syracuse and completed orthopaedic surgery residency training at Geisinger Medical Center. He returned to Syracuse for a fellowship in hand and upper extremity surgery, including time at Texas Scottish Rite Children’s Hospital in Dallas.|Dr. Klena serves on the resident education committee for the American Society for the Surgery of Hand and is a member of the American Orthopaedic Society. He has extensive peer-reviewed publications within the hand literature. He has provided guidance for resident research efforts, with a particular focus on upper extremity trauma, minimally invasive surgical techniques and resident education.|In 10 years with Geisinger, Dr. Klena has led the hand division from a single surgeon based in Geisinger’s central region to the successful recruitment and geographic expansion of six hand surgeons providing care for patients throughout Geisinger.|The motto of his undergraduate alma mater best summarizes his approach to leadership and his dedication to service: “Acta non verba” or “Deeds, not words.”|His interests include family, women's lacrosse, fly fishing and Pittsburgh sports. Dr. Klena is rated as an Advanced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Carpal Tunnel Syndrome, Mononeuritis Multiplex, Dupuytren Contracture, Trigger Thumb, and Endoscopy.

Dr. Lietman is a board-certified and fellowship-trained adult reconstruction specialist. His clinical interests include total knee/hip replacement, total knee/hip reconstruction and revision, and musculoskeletal tumors. Dr. Lietman earned his medical degree from Dartmouth College. He completed his residency at Johns Hopkins University. Dr. Lietman completed fellowships in orthopaedic oncology at Boston Children's Hospital and at Massachusetts General Hospital. He is certified by the American Board of Orthopaedic Surgery. Dr. Lietman is rated as an Advanced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Osteoarthritis, Sciatica, Fibrous Dysplasia, Knee Replacement, and Hip Replacement.

L. Christopher Grandizio, DO, is an orthopaedic surgeon who specializes in hand, wrist, shoulder and elbow surgery. Dr. Grandizio is a Professor of Orthopaedic Surgery at Geisinger Commonwealth School of Medicine and serves as the of the Chief of Shoulder & Elbow Division for the Geisinger Musculoskeletal Institute. Dr. Grandizio is an expert in the treatment of peripheral nerve compression (including carpal tunnel syndrome and cubital tunnel syndrome), upper-extremity trauma and fractures, sports injuries, and shoulder and elbow replacements. In addition, he specializes in complex reconstructive procedures in the upper-limb, including tendon transfers for shoulder, elbow and hand conditions.|After completing his Orthopaedic Surgery Residency at Geisinger, he went to on to complete a one-year fellowship in upper-extremity surgery at the Cleveland Clinic. Upon returning to Geisinger, he founded the Geisinger Upper-Extremity Research Fellowship, where he has mentored numerous international and US fellows. In 2021, he was selected to participate in the Young Leaders Program for the American Society for Surgery of the Hand (ASSH).|Dr. Grandizio maintains a strong interest in both research and education. He has published over 100 peer-reviewed research articles. As an expert in the management of complex elbow instability, Dr. Grandizio has been invited to give numerous national and international presentations on topics ranging from upper-extremity trauma to technology in healthcare. He serves as a peer-reviewer for multiple orthopaedic journals and is an Associate Editor for the Journal of Hand Surgery. As part of his commitment to education, he is heavily engaged in professional societies and is involved in multiple committees and leadership positions within the ASSH. In addition, Dr. Grandizio is one of the few upper-extremity surgeons who is a member of both the ASSH and ASES.|A former member of Bucknell University’s NCAA Division I baseball team, Dr. Grandizio has a long history in athletics and enjoys helping his patients return to doing what they love. He specializes in elbow ulnar collateral ligament repair / reconstruction (Tommy John Surgery) and has a passion for working with throwing athletes.|In his spare time, he enjoys spending time with his family, coaching baseball and reading. Dr. Grandizio is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Carpal Tunnel Syndrome, Mononeuritis Multiplex, Trigger Thumb, Osteotomy, and Endoscopy.

Dr. Dwyer is a board-eligible and fellowship-trained hand surgeon. His clinical interests include hand, wrist, finger and elbow conditions; carpal and cubital tunnel syndromes, nerve and tendon injuries, tennis elbow, trigger and mallet fingers, fractures, joint replacements, cysts and masses. Dr. Dwyer earned his medical degree from Loyola University Chicago. He completed his residency at the University of Pittsburgh Medical Center, and his fellowship in hand surgery at Lahey Hospital & Medical Center. Dr. Dwyer is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Carpal Tunnel Syndrome, Rhizarthrosis, Trigger Thumb, and Ganglion Cyst.

Benjamin Wagner, MD, specializes in foot and ankle orthopaedics, and has a special interest in sports injuries and ankle arthritis. His clinical expertise encompasses forefoot, midfoot and hindfoot reconstruction, including total ankle replacement surgery.|Dr. Wagner cares for people with conditions including hammertoes, bunions, big toe arthritis, ankle sprains, diabetic foot conditions and Charcot arthropathy. He also treats sports injuries including ligament, tendon and cartilage injuries, as well as foot and ankle fractures.|A native of Danville, Pa., Dr. Wagner was born at Geisinger. “My family ties and upbringing brought me back to the area — and now I’m honored to be asked to work side by side with my mentors from training.” He adds, “I love helping patients get back on their feet and working toward getting back to the activities they like to do.”|In his spare time, he enjoys spending time with his family. Dr. Wagner’s interests include fitness, running and cooking. Dr. Wagner is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Achilles Tendon Rupture, Tendinitis, Ganglion Cyst, and Plantar Fasciitis.

Dr. Beichner is a board-eligible physician specializing in family medicine. Her clinical interests include hormonal treatment for adult transgender patients (18 years old and up). She attended Jefferson Medical College of Thomas Jefferson University, where she earned her medical degree. Dr. Beichner completed her residency at Washington Hospital. Dr. Beichner is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. Her top areas of expertise are Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Acquired Agranulocytosis, and Hypertension.

Matthew Haley is a primary care provider, practicing in Family Medicine in Danville, Pennsylvania. Dr. Haley is rated as an Advanced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Maturity Onset Diabetes of the Young, Lung Metastases, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

"Thomas R. Bowen, MD, is chief of Orthopaedic Oncology for the Geisinger Musculoskeletal Institute and an orthopaedic surgeon at Geisinger Medical Center. Dr. Bowen earned his medical degree from Jefferson Medical College in Philadelphia, Pa. He continued his orthopaedic residency at Geisinger Medical Center and then proceeded to Massachusetts General Hospital and Boston Children's Hospital for fellowship training in orthopaedic oncology. Dr. Bowen is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. He is a fellow of the American Academy of Orthopedic Surgery and the prestigious American Orthopaedic Association. Dr. Bowen’s clinical interests include tumors of the musculoskeletal system (bone, cartilage, muscle, tendon, and peripheral nerves). He specializes in limb-preserving surgery for malignant tumors, as well as minimally invasive treatments for benign tumors and bone cysts. He cares for children and adults with tumors of the musculoskeletal system.|“Today, patients are healthier and living longer than ever before. I routinely see patients for follow-up visits who may not have survived only a decade ago. Now, they’re able to attend graduations, take vacations and watch their grandchildren grow up. Helping make those milestones possible is a part of what makes being a surgeon so worthwhile.”|In his personal life, Dr. Bowen is a native of Wilmington, Del., and a private airplane pilot, instrument rated, single engine land. His favorite movie is ""The Right Stuff.""". Dr. Bowen is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Bone Tumor, Adult Soft Tissue Sarcoma, Ewing Sarcoma, Hip Replacement, and Knee Replacement.

Anil Menedal is an Orthopedics provider in Danville, Pennsylvania. Dr. Menedal is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Osteoarthritis, Tendinitis, Bursitis, Knee Replacement, and Hip Replacement. Dr. Menedal is currently accepting new patients.

Dr. Widmaier is a board-certified and fellowship-trained orthopaedic trauma surgeon. His clinical interests include acute total hip replacement for acetabular fracture, and his research interests include braking and driving after total hip replacements. Dr. Widmaier earned his medical degree from the University of Maryland. He completed his residency at Geisinger Medical Center, and a fellowship in orthopaedic trauma at Tampa General Healthcare. Dr. Widmaier is certified by the American Board of Orthopaedic Surgery. Dr. Widmaier is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Infectious Arthritis, Osteoarthritis, Compartment Syndrome, Hip Replacement, and Fasciotomy.

Dr. Lewis is a board-certified physician specializing in internal medicine and pediatrics. His clinical interests include immunology, infectious diseases and Alzheimer’s disease. Dr. Lewis obtained his medical degree from the Philadelphia College of Osteopathic Medicine. He completed his residency at Geisinger Medical Center. He is certified by the American Board of Internal Medicine and the American Board of Pediatrics. Dr. Lewis is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Maturity Onset Diabetes of the Young, Enlarged Prostate (BPH), Type 2 Diabetes (T2D), and End-Stage Renal Disease (ESRD).

Dr. Ashton is a board-certified physician specializing in family medicine. His clinical interests include preventive care and performance improvement. Dr. Ashton obtained his medical degree from the University of Pittsburgh. He completed his residency at Thomas Jefferson University Hospital. He is certified by the American Board of Family Medicine. Dr. Ashton is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are HIV/AIDS, Maturity Onset Diabetes of the Young, Myelitis, and AIDS Dysmorphic Syndrome.

Conor Mulcahy, DO, is an internal medicine physician. He cares for adults with a range of chronic and acute conditions. “I enjoy being a ‘Jack of all trades’ but have a particular interest in optimizing lifestyle to help patients live healthier lives,” he says.|Dr. Mulcahy earned his medical degree from Lake Erie College of Osteopathic Medicine in Erie. After medical school, he completed a residency at Geisinger Medical Center, where he was resident of the year.|“I love the longitudinal relationships I get to have with patients,” he notes. “I also have a passion for teaching.”|In his spare time, Dr. Mulcahy enjoys ultimate Frisbee and hiking. Dr. Mulcahy is rated as an Experienced provider by MediFind in the treatment of Osteoarthritis. His top areas of expertise are Obesity, High Cholesterol, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.