> Skip repeated content
photo of Daniel A. Osei, MD, MSc

Daniel A. Osei, MD, MSc

Hand and Upper Extremity

About Dr. Osei


Dr. Daniel Osei is a dedicated clinician who treats a wide range of clinical problems affecting the hands, wrists, forearms, and elbows, from simple to complex. He also treats peripheral nerve injuries and other nerve conditions in the upper and lower extremities.

Dr. Osei received his undergraduate degree from Princeton University, where he played soccer on the men's soccer team. He then received his medical degree from the University of Pennsylvania prior to completing his orthopedic residency at Hospital for Special Surgery. Dr. Osei completed his fellowship training in hand surgery at Washington University in St. Louis and also received additional training in microvascular surgery at the world-renowned Chang Gung Memorial Hospital in Taiwan.

In addition to patient care, Dr. Osei is also dedicated to advancing the science behind the care of patients with disorders of the hand and upper extremity. Following his hand fellowship at Washington University, he spent two years completing his MSc degree in Clinical Investigation and statistics. He is focused on producing high-quality clinical outcomes and epidemiological research.

He has authored numerous articles and his research is currently funded by several research grants, including those from the National Institutes of Health (NIH) and the US Department of Defense. He has given numerous research and clinical practice related talks and educational lectures nationally and internationally, and has won many awards, including the 2015 ASSH Richard H. Gelberman Scholar Award. Dr. Osei is committed to using the highest quality clinical research evidence to improve patient care and surgical outcomes for all of his patients.

Profile Video


Specialized Centers

Center for Brachial Plexus and Traumatic Nerve Injury

Patient Stories

Patient ratings for Dr. Osei


Learn more about our patient ratings.


Please call our office if you have questions regarding your insurance coverage. If you have out of network benefits, then your insurance may reimburse you for a portion of your office visit. We will work with you and your insurance to minimize your out-of-pocket costs. Financial assistance may be available for patients in need.



Associate Attending Orthopedic Surgeon, Hospital for Special Surgery
Associate Professor of Orthopedic Surgery, Weill Cornell Medical College
Associate Attending Orthopedic Surgeon, NewYork-Presbyterian Hospital


American Society for Surgery of the Hand
Orthopedic Trauma Association
American Society for Surgery of the Hand
American Academy for Orthopedic Surgery


American Board of Orthopedic Surgery
Subspecialty Certificate in Surgery of the Hand


Excellence in Education Award, Department of Orthopedic Surgery, 2014-2016
ASSH Richard H. Gelberman Scholar Travel Award, 2015
ASSH Annual Meeting, top 8 paper, 2015 ORS/OREF/AAOS New Investigator Workshop, 2015
ASSH Young Leaders Program, 2014
Attending Physician Excellence in Education Award, Department of Orthopedic Surgery, 2014
Faculty Diversity Scholar, Washington University School of Medicine, 2012
J. Robert Gladden Orthopedic Society PGY 5 Scholarship Recipient, 2011
AAOS Annual Meeting Scientific Exhibit, Honorable Mention for award of Excellence, 2011
AOA Emerging Leaders Program, 2010
Distinguished Housestaff Award for All-Around Excellence, New York Hospital/Weill Cornell Medical Center, 2010-2011
AOA Resident Leadership Forum, 2010
William G. Munns Memorial Prize, University of Pennsylvania School of Medicine, 2006
Meigs Merit Scholarship, University of Pennsylvania School of Medicine, 2002-2006


University of Pennsylvania School of Medicine


Weill Cornell/Hospital for Special Surgery


Hospital for Special Surgery


Washington University School of Medicine

State Licensure



Publications by Dr. Osei

Patient Education

Selected Journal Articles

Osei DA, Groves AP, Bommarito K, Ray WZ. Cubital Tunnel Syndrome: Incidence and Demographics in a National Administrative Database. Neurosurgery 2017; 80(3):417-420.

An TW, Evanoff BA, Boyer MI, Osei DA. The Prevalence of Cubital Tunnel Syndrome: A Cross-sectional study in a United States Metropolitan Cohort. J Bone Joint Surgery Am 2017; 99(5):408-416.

Kazmers NH, Hippensteel KJ, Calfee RP, Wall LB, Boyer MI, Goldfarb CA, Gelberman RH, Osei DA. Locking Plate Arthrodesis Compares Favorably with LRTI for Thumb Trapeziometacarpal Arthrosis: Early Outcomes from a Longitudinal Cohort Study. HSS J. 2017; 13(1):54-60.

Osei DA, Rebehn KA, Boyer MI. Soft-tissue Defects After Total Knee Arthroplasty: Management and Reconstruction. J Am Acad Orthop Surg. 2016; 24:769-779.

Park KW, Boyer MI, Gelberman RH, Calfee RP, Stepan JG, Osei DA. Simultaneous Bilateral Versus Staged Bilateral Carpal Tunnel Release: A Cost-effectiveness Analysis. J Am Acad Orthop Surg. 2016; 24:796-804.

Dy CJ, Baty J, Saeed MJ, Olsen MA, Osei DA. A Population-Based Analysis of Time to Surgery and Travel Distances for Brachial Plexus Surgery. J Hand Surg Am. 2016 Sep; 41(9):903-909.

Knutsen EJ, Calfee RP, Chen R, Goldfarb CA, Osei DA. Factors Associated With Surgical Treatment of Lateral Epicondylitis. Am J Sports Med 2015; 43:2133-2137.

Krogue JD, Aleem, AW, Osei DA, Goldfarb CA, Calfee RP. Predictors of Surgical Revision After In-situ Decompression of the Ulnar Nerve. J Should Elbow Surg 2015; 24(4):634-639.

Osei DA, Calfee RP, Stepan JG, Boyer MI, Goldfarb CA, Gelberman RH. Simultaneous bilateral versus unilateral carpal tunnel release; a prospective cohort study of early outcomes and limitations. J Bone Joint Surg Am 2014; 96(11):889-896.

Osei DA, Stepan JG, Calfee RP, Thomopoulos S, Boyer MI, Potter R, Gelberman RH. The effect of suture caliber and core strands on intrasynovial flexor tendon repair: A biomechanical study in human cadaver. J Hand Surg Am 2014; 39(2):262-268.

For more publications, please see the PubMed listing.

Selected Presentations

The Role of Patient Demographics and Diagnostic Testing in the Surgical Decision Making for Treatment of McGowan Grade 1 and 2 Cubital Tunnel Syndrome. Annual Meeting of the American Society for Surgery of the Hand, Resident and Fellows Conference, Austin, September 2016.

Comparative Morbidity of Cubital Tunnel Surgeries: A Prospective Cohort Study. Annual Meeting of the American Society for Surgery of the Hand, Seattle, September 2015.

Outcomes of Acute versus Subacute Scapholunate Ligament Repair. Annual Meeting of the American Society for Surgery of the Hand, Seattle, September 2015.

An Epidemiologic Perspective on Scaphoid Fracture Treatment and Frequency of Nonunion. Annual Meeting of the American Society for Surgery of the Hand, Seattle, September 2015.

Simultaneous Bilateral versus Staged Unilateral Carpal Tunnel Release: A Cost Effectiveness Analysis. Annual Meeting of the American Society for Surgery of the Hand, Boston, September 2014.

Time to Surgery in the Treatment of Lateral Epicondylitis: A Cost-Effectiveness Analysis. Annual Meeting of the American Society for Surgery of the Hand, Boston, September 2014.

Effect of Perioperative Celecoxib on Postoperative Opioid Use Following Hand Surgery. Annual Meeting of the American Society for Surgery of the Hand, Boston, September 2014.


Industry Relationships

Industry Relationships

One of the goals of HSS is to advance the science of orthopedic surgery, rheumatology, and related disciplines for the benefit of patients. Physicians at HSS may collaborate with outside companies for education, research and medical advances. HSS supports this collaboration in order to foster medical breakthroughs; however HSS also believes that these collaborations must be disclosed.

As part of the disclosure process, this website lists physician collaborations with outside companies. The disclosures are provided by information provided by the physician and other sources and are updated regularly. Further information may be available on individual company websites.

Below are the healthcare industry relationships reported by Dr. Osei as of November 18, 2019.

  • Medartis - Consultant

By disclosing the collaborations of HSS physicians with industry on this website, HSS and its physicians make this information available to their patients and the public, thus creating a transparent environment for those who are interested in this information. Further, the HSS Conflicts of Interest Policy does not permit physicians to collect royalties on products developed by him/her that are used on patients at HSS.

Patients should feel free to ask their HSS physicians questions about these relationships.

Dr. Osei in the News

Call for an appointment