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. 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 as an 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 an 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
- Carpal Tunnel Syndrome
- Left Carpal Tunnel Syndrome
- Right Wrist Nerve Compression
- Right Hand Numbness
- Right CTS
- Median Nerve Compression
- Wrist Nerve Entrapment
- Left Wrist Nerve Compression
- Left Hand Numbness
- Left CTS
ICD-10 Codes:
- G5601: Carpal tunnel syndrome, right upper limb
- G5603: Carpal tunnel syndrome, bilateral upper limbs
- G5602: Carpal tunnel syndrome, left upper limb
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:
- 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:
- Right Elbow Pain
- Elbow Injuries and Disorder
- Pain
- Aching right elbow
- Sore right elbow
- Right elbow discomfort
ICD-10 Codes:
- M25521: Pain in right elbow
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
Also known as:
- Finger Pain
- Finger Injuries and Disorder
- Pain
- Sore Finger
- Aching Finger
- Finger Discomfort
ICD-10 Codes:
- M79645: Pain in left finger(s)
What procedures does Dr. Cassidy perform?
As an Orthopedic Hand Surgeon, Dr. Cassidy performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed 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:
- Carpal Tunnel Release Surgery (Endoscopic)
- Trigger Finger Release Surgery
- Dupuytren's Contracture Surgery (Single Finger)
- Dupuytren's Contracture Surgery (Additional Finger)
- Wrist Ganglion Cyst Removal
- Wrist Bone Removal
- Endoscopy
- Endoscopic Carpal Tunnel Surgery
- Wrist Endoscopy for Carpal Tunnel
- Transverse Carpal Ligament Release
- Tendon Sheath Incision
- Trigger Finger Tenolysis
- Finger Tendon Release
- Hand Tendon Surgery
- Partial Palmar Fasciectomy', 'Finger Contracture Release Surgery', 'Dupuytren's Release (Finger)
- Partial Palmar Fasciectomy
- Finger Contracture Release
- Z-plasty Finger
- Ganglion Excision
- Wrist Cyst Surgery
- Dorsal/Volar Ganglion Removal
- Partial Carpectomy
- Wrist Bone Excision
- Carpal Bone Removal
CPT Codes:
- 29848: Endoscopy, wrist, surgical, with release of transverse carpal ligament
- 26055: Tendon sheath incision (eg, for trigger finger)
- 26123: Fasciectomy, partial palmar with release of single digit including proximal interphalangeal joint, with or without Z-plasty, other local tissue rearrangement, or skin grafting (includes obtaining graft);
- 26125: Fasciectomy, partial palmar with release of single digit including proximal interphalangeal joint, with or without Z-plasty, other local tissue rearrangement, or skin grafting (includes obtaining graft); each additional digit (List separately in addition to code for primary procedure)
- 25111: Excision of ganglion, wrist (dorsal or volar); primary
- 25210: Carpectomy; 1 bone
Also known as:
- Injection for Tendon or Ligament Pain
- Tendon sheath injection
- Ligament injection
- Plantar fascia injection
- Soft tissue injection for pain
CPT Codes:
- 20550: Injection(s); single tendon sheath, or ligament, aponeurosis (eg, plantar "fascia")
Also known as:
- Carpal Tunnel Injection
- Tendon or Ligament Pain Injection
- Corticosteroid injection for carpal tunnel
- Local anesthetic for carpal tunnel
- Wrist pain injection
- Carpal tunnel syndrome injection
- Tendon Injection
- Ligament Injection
- Soft Tissue Injection
- Pain Relief Injection (Tendon/Ligament)
CPT Codes:
- 20526: Injection, therapeutic (eg, local anesthetic, corticosteroid), carpal tunnel
- 20551: Injection(s); single tendon origin/insertion
Also known as:
- Small Joint or Bursa Injection/Aspiration
- Joint Tap
- Bursa Fluid Removal
- Small Joint Injection
- Arthrocentesis
CPT Codes:
- 20600: Arthrocentesis, aspiration and/or injection, small joint or bursa (eg, fingers, toes); without ultrasound guidance
Also known as:
- Short Arm Cast Application
- Elbow to Finger Cast
- Forearm Cast
- Arm Immobilization Cast
CPT Codes:
- 29075: Application, cast; elbow to finger (short arm)
Also known as:
- Joint or Bursa Injection/Aspiration
- Arthrocentesis
- Joint Fluid Removal
- Bursa Injection
CPT Codes:
- 20605: Arthrocentesis, aspiration and/or injection, intermediate joint or bursa (eg, temporomandibular, acromioclavicular, wrist, elbow or ankle, olecranon bursa); without ultrasound guidance
Also known as:
- Removal of Deep Surgical Implant
- Removal of Superficial Implant (Wire, Pin, or Rod)
- Hardware Removal Surgery
- Buried Implant Extraction
- Orthopedic Implant Removal
- Buried wire removal
- Pin removal surgery
- Rod removal (superficial)
CPT Codes:
- 20680: Removal of implant; deep (eg, buried wire, pin, screw, metal band, nail, rod or plate)
- 20670: Removal of implant; superficial (eg, buried wire, pin or rod) (separate procedure)
Also known as:
- Joint or Bursa Injection/Fluid Removal
- Arthrocentesis
- Major Joint Aspiration
- Bursa Injection
- Joint Fluid Removal
CPT Codes:
- 20610: Arthrocentesis, aspiration and/or injection, major joint or bursa (eg, shoulder, hip, knee, subacromial bursa); without ultrasound guidance
Also known as:
- Forearm/Wrist Tendon Transfer
- Finger Tendon Removal
- Tendon Transplant (Arm/Wrist)
- Tendon Graft (Forearm)
- Flexor Tendon Transfer
- Extensor Tendon Transfer
- Flexor Tendon Excision (Finger)
- Extensor Tendon Excision (Finger)
- Finger Tendon Surgery
CPT Codes:
- 25310: Tendon transplantation or transfer, flexor or extensor, forearm and/or wrist, single; each tendon
- 26180: Excision of tendon, finger, flexor or extensor, each tendon
Also known as:
- Wrist or Hand Joint Replacement (Interposition)
- Finger Joint Replacement Surgery
- Intercarpal Arthroplasty
- Carpometacarpal Joint Replacement
- Tendon Interposition Arthroplasty
- Metacarpophalangeal Joint Arthroplasty
- Knuckle Joint Replacement
- Artificial Finger Joint Implant
CPT Codes:
- 25447: Arthroplasty, Intercarpal Or Carpometacarpal Joints; Interposition (Eg, Tendon)
- 26531: Arthroplasty, metacarpophalangeal joint; with prosthetic implant, each joint
Also known as:
- Wrist Arthroscopy
- Endoscopy
- Wrist Scope Surgery
- Keyhole Wrist Surgery
- Wrist Joint Repair
- Triangular Fibrocartilage Repair
CPT Codes:
- 29846: Arthroscopy, wrist, surgical; excision and/or repair of triangular fibrocartilage and/or joint debridement
Also known as:
- Hand or Finger Cyst Removal
- Ganglion cyst removal hand
- Tendon sheath lesion excision
- Mucous cyst removal finger
CPT Codes:
- 26160: Excision of lesion of tendon sheath or joint capsule (eg, cyst, mucous cyst, or ganglion), hand or finger
Also known as:
- Finger Splint Application
- Static Finger Splint
- Finger Immobilization
- Finger Brace
CPT Codes:
- 29130: Application of finger splint; static
Also known as:
- Extensive Elbow Arthroscopy with Debridement
- Endoscopy
- Elbow Scope with Cleaning
- Surgical Elbow Debridement
- Arthroscopic Elbow Cleanup
CPT Codes:
- 29838: Arthroscopy, elbow, surgical; debridement, extensive
Also known as:
- Short Arm Splint Application
- Forearm to hand splint
- Static arm splint
- Wrist and forearm splint
- Arm immobilization splint
CPT Codes:
- 29125: Application of short arm splint (forearm to hand); static
Also known as:
- Small Hand or Finger Tumor Removal
- Hand Soft Tissue Excision
- Finger Vascular Malformation Removal
- Intramuscular Tumor Excision
- Hand Lump Removal
CPT Codes:
- 26116: Excision, tumor, soft tissue, or vascular malformation, of hand or finger, subfascial (eg, intramuscular); less than 1.5 cm
Also known as:
- Hand Cord Manipulation After Enzyme Injection
- Dupuytren's cord manipulation', 'Enzyme injection for Dupuytren's
- Palmar fascia treatment
CPT Codes:
- 26341: Manipulation, palmar fascial cord (ie, Dupuytren's cord), post enzyme injection (eg, collagenase), single cord
Also known as:
- Total Shoulder Replacement
- Glenohumeral Arthroplasty
- Shoulder Joint Replacement
- Proximal Humeral Replacement
- Artificial Shoulder Surgery
CPT Codes:
- 23472: Arthroplasty, glenohumeral joint; total shoulder (glenoid and proximal humeral replacement (eg, total shoulder))
Also known as:
- Finger or Toe Joint Fusion
- Interphalangeal Arthrodesis
- Digit Joint Fusion
- Finger Joint Surgery
- Toe Joint Surgery
CPT Codes:
- 26860: Arthrodesis, interphalangeal joint, with or without internal fixation;
Also known as:
- Brachial Plexus Nerve Block
- Shoulder Nerve Injection
- Arm Pain Injection
- Imaging-Guided Nerve Block
CPT Codes:
- 64415: Injection(s), anesthetic agent(s) and/or steroid; brachial plexus, including imaging guidance, when performed
Also known as:
- Ulnar Nerve Release or Repositioning at Elbow
- Spinal Nerve Transection
- Ulnar Nerve Transposition
- Cubital Tunnel Release
- Elbow Nerve Surgery
- Neuroplasty Ulnar Nerve
- Spinal Nerve Avulsion
- Extradural Nerve Cut
- Nerve Root Sectioning
CPT Codes:
- 64718: Neuroplasty and/or transposition; ulnar nerve at elbow
- 64772: Transection or avulsion of other spinal nerve, extradural
Also known as:
- Peripheral Nerve Block
- Nerve injection
- Pain relief injection
- Steroid injection for nerve pain
CPT Codes:
- 64450: Injection(s), anesthetic agent(s) and/or steroid; other peripheral nerve or branch
Also known as:
- Major Arm or Leg Nerve Repair
- Peripheral Nerve Surgery
- Nerve Reconstruction Arm/Leg
- Open Neuroplasty
CPT Codes:
- 64708: Neuroplasty, major peripheral nerve, arm or leg, open; other than specified
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
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Medicare
Point32Health
State of Massachusetts
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Cassidy's office located?
Dr. Charles Cassidy's Primary Practice
800 Washington St # 26
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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