32 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Cassidy, Orthopedic Hand Surgeon in Boston, MA?
Dr. Charles Cassidy, MD is an Orthopedic Hand Surgeon, who primarily practices in Boston, MA. He has been practicing for over 32 years and is board certified by the American Board of Orthopaedic Surgery. Dr. Cassidy graduated from Northwestern University The Feinberg School of Medicine and completed his residency at New England Med Ctr Hosps, Hand Surgery-Orthopedic Surgery New England Med Ctr Hosps, Orthopedic Surgery. He is a member of the American Academy of Orthopaedic Surgeons, American Society for Surgery of the Hand, Alpha Omega Alpha, Orthopaedic Club, MASSACHUSETTS ORTHOPAEDIC ASSOCIATION, American Orthopaedic Association, New England Hand Society, AO North America Faculty, Eastern Orthopaedic Association, New England Shoulder and Elbow Society, and American Academy of Orthopaedic Surgeons. Dr. Cassidy is fluent in English, and is currently seeing new patients. Dr. Cassidy’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Cassidy’s office at (617) 636-5000.
What are Areas of Expertise for Dr. Cassidy?
Dr. Charles Cassidy, MD is a highly-rated, board-certified Orthopedic Hand Surgeon known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Cassidy empowers patients to confidently navigate their health journey, specializing in Elbow Reconstruction, Elbow Replacement, Elbow Surgery, Hand & Upper Extremity Surgery, or comprehensive wellness support. Serving the Boston/MA community, Dr. Cassidy is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Cassidy go to medical school and complete their residency?
Fellowship: Tufts Combined, Fellow:Hand Surgery
Residency: New England Med Ctr Hosps, Hand Surgery-Orthopedic Surgery New England Med Ctr Hosps, Orthopedic Surgery | Tufts Medical Center | Tufts Medical Center | Tufts Medical Center (New England) Program
Medical School: Northwestern Uniiversity | Northwestern University The Feinberg School of Medicine
Is Dr. Cassidy board certified in Orthopedic Hand Surgeon?
Yes, Dr. Charles Cassidy, MD is board certified by the American Board of Orthopaedic Surgery
What languages does Dr. Cassidy speak?
Dr. Cassidy and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Cassidy treat?
As a Orthopedic Hand Surgeon, Dr. Cassidy diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Cassidy. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Right Carpal Tunnel Syndrome
- Left Carpal Tunnel Syndrome
- Carpal Tunnel Syndrome
- Right Wrist Nerve Compression
- Right Hand Numbness
- Right CTS
- Left Wrist Nerve Compression
- Left Hand Numbness
- Left CTS
- Median Nerve Compression
- Wrist Nerve Entrapment
ICD-10 Codes:
- G5601: Carpal tunnel syndrome, right upper limb
- G5602: Carpal tunnel syndrome, left upper limb
- G5603: Carpal tunnel syndrome, bilateral upper limbs
Also known as:
- Osteoarthritis of the left thumb joint
- Primary Osteoarthritis in Right Thumb Base
- Osteoarthritis of both thumb joints
- Osteoarthritis of the right hand
- Osteoarthritis
- Degenerative joint disease
- Wear-and-tear arthritis
- Arthrosis
- Joint degeneration
- Right Thumb Arthritis
- Primary Right First CMC Joint Arthritis
- Right Hand Thumb Base Osteoarthritis
ICD-10 Codes:
- M1812: Unilateral primary osteoarthritis of first carpometacarpal joint, left hand
- M1811: Unilateral primary osteoarthritis of first carpometacarpal joint, right hand
- M180: Bilateral primary osteoarthritis of first carpometacarpal joints
- M19041: Primary osteoarthritis, right hand
Also known as:
- Trigger Left Middle Finger
- Trigger Right Middle Finger
- Trigger Right Ring Finger
- Finger Injuries and Disorder
- Tendinitis
- Stenosing Tenosynovitis of Left Middle Finger
- Left Middle Finger Tendonitis
- Snapping Left Middle Finger
- Stenosing Tenosynovitis of Right Middle Finger
- Right Middle Finger Tendonitis
- Snapping Right Middle Finger
- Stenosing Tenosynovitis of Right Ring Finger
- Right Ring Finger Tendonitis
- Snapping Right Ring Finger
ICD-10 Codes:
- M65332: Trigger finger, left middle finger
- M65331: Trigger finger, right middle finger
- M65341: Trigger finger, right ring finger
Also known as:
- Right Wrist Pain
- Pain
- Wrist Injuries and Disorder
- Aching right wrist
- Sore right wrist
- Right wrist discomfort
ICD-10 Codes:
- M25531: Pain in right wrist
Also known as:
- Dupuytren's Contracture
- Connective Tissue Disorder
- Finger Injuries and Disorder
- Dupuytren contracture
- Palmar fibromatosis
- Viking disease
- Hand contracture
ICD-10 Codes:
- M720: Palmar fascial fibromatosis [Dupuytren]
Also known as:
- Pain in Left Wrist
- Pain
- Wrist Injuries and Disorder
- Left Wrist Ache
- Left Wrist Discomfort
- Sore Left Wrist
ICD-10 Codes:
- M25532: Pain in left wrist
Also known as:
- Ulnar Nerve Damage
- Right Ulnar Nerve Damage
- Peripheral Nerve Disorder
- Ulnar Neuropathy
- Cubital Tunnel Syndrome
- Right Ulnar Neuropathy
- Right Elbow Nerve Pain
- Right Funny Bone Injury
ICD-10 Codes:
- G5622: Lesion of ulnar nerve, left upper limb
- G5621: Lesion of ulnar nerve, right upper limb
Also known as:
- Right Elbow Pain
- Left Elbow Pain
- Elbow Injuries and Disorder
- Pain
- Aching right elbow
- Sore right elbow
- Right elbow discomfort
- Aching left elbow
- Sore left elbow
- Left elbow discomfort
ICD-10 Codes:
- M25521: Pain in right elbow
- M25522: Pain in left elbow
Also known as:
- De Quervain's Tenosynovitis
- Hand Injuries and Disorder
- Tendinitis
- De Quervain's Disease', 'Washerwoman's Sprain
- Radial Styloid Tenosynovitis
ICD-10 Codes:
- M654: Radial styloid tenosynovitis [de Quervain]
Also known as:
- Right Hand Pain
- Hand Injuries and Disorder
- Pain
- Pain in right palm
- Right wrist and hand pain
- Right hand discomfort
ICD-10 Codes:
- M79641: Pain in right hand
Also known as:
- Trigger Thumb
- Finger Injuries and Disorder
- Tendinitis
- Stenosing Tenosynovitis of Thumb
- Thumb Tendonitis
- Thumb Locking
ICD-10 Codes:
- M65312: Trigger thumb, left thumb
Which procedures does Dr. Cassidy perform as a Orthopedic Hand Surgeon?
As a Orthopedic Hand Surgeon, procedures performed by an Dr. Charles Cassidy may include:
- Allograft Reconstruction
- Ankle Second Opinion
- Arthrodesis
- Arthropathy
- Arthroscopy
- Cartilage Transplantation
- Casting and Splinting
- Deformity Correction (Post Trauma)
For detailed information, please contact Dr. Cassidy's office.
Does Dr. Cassidy accept my insurance?
Dr. Cassidy accepts most major insurance plans. Important: Please call our office at (617) 636-5000 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Cassidy accept in Boston, MA?
Dr. Cassidy in Boston, MA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Cross Blue Shield of Massachusetts
Boston Medical Center
CVS Health (formerly Aetna)
Express Scripts
Medicare
Molina
Point32Health
State of Massachusetts
UnitedHealthcare
View All Insurances
Where is Dr. Cassidy's office located?
Dr. Charles Cassidy's Primary Practice
800 Washington St # 1013
Boston, MA 02111
(617) 636-5000
Recognitions
Memberships & Associations
American Academy of Orthopaedic Surgeons
Member
American Society for Surgery of the Hand
Member
Alpha Omega Alpha
Member
Orthopaedic Club
Member
MASSACHUSETTS ORTHOPAEDIC ASSOCIATION
Member
2002
American Orthopaedic Association
Member
2004
New England Hand Society
Member
AO North America Faculty
Member
Eastern Orthopaedic Association
Member
New England Shoulder and Elbow Society
Member
American Academy of Orthopaedic Surgeons
Fellow
Castle Connolly Doctor’s Choice Awards
Doctor’s Choice - All Time
Among the most nominated for the Castle Connolly Top Doctor recognition across all time
Doctor’s Choice - 2025
Among the most nominated for the Castle Connolly Top Doctor recognition in 2025
Doctor’s Choice - Last 5 Years
Among the most nominated for the Castle Connolly Top Doctor recognition in the last 5 years
What is Dr. Cassidy's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Cassidy's National Provider Identifier (NPI) number is 1053351585.
What common questions do patients ask about Dr. Cassidy?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Cassidy
What is Dr. Charles Cassidy's specialty?
Dr. Cassidy is a Orthopedic Hand Surgeon near Boston, MA. An orthopaedic surgeon specializing in the upper extremity focuses on the investigation, preservation, and restoration of all structures affecting the form and function of the hand and wrist. This specialist employs medical, surgical, and rehabilitative techniques to treat various conditions and injuries related to the upper extremity. Contact Dr. Cassidy to book an appointment today.
Is this Dr. Charles Cassidy affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Cassidy is affiliated with Tufts Medical Center which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Orthopedic Hand Surgeon?
Explore Orthopedic Hand Surgeon with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Charles Cassidy accepting new patients in Boston, MA?
Yes, Dr. Charles Cassidy is accepting new patients at this time.
Does Dr. Charles Cassidy offer online booking?
Please contact Dr. Cassidy's office at (617) 636-5000 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Charles Cassidy?
Please contact Dr. Cassidy's office at (617) 636-5000 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Charles Cassidy have?
Dr. Charles Cassidy is certified by the American Board of Orthopaedic Surgery.
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