Charles Cassidy, M.D.
NPI 1053351585 · Orthopaedic Hand Surgery Physician · Boston, MA
Enrolled with Medicare as Practitioner - Hand Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Cassidy, M.D. is a Orthopaedic Hand Surgery Physician provider in Boston, MA (NPI 1053351585).
Provider details
- NPI number
- 1053351585
- Entity type
- Individual
- Primary specialty
- Orthopaedic Hand Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 77697 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
669 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 203 | $65 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 121 | $97 |
| Injection Into Tendon Or Ligament20550 | 83 | $34 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 64 | $132 |
| Aspiration And/Or Injection of Fluid From Small Joint20600 | 46 | $35 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,607 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2010-03-24
Frequently asked questions
- What is Charles Cassidy's NPI number?
- Charles Cassidy's National Provider Identifier (NPI) is 1053351585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Cassidy's specialty?
- Charles Cassidy is listed in the NPPES registry with a primary specialty of Orthopaedic Hand Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Cassidy located?
- Charles Cassidy's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Charles Cassidy's phone number?
- The practice phone number listed in the NPPES registry for Charles Cassidy is (617) 636-5150.
- Does Charles Cassidy accept Medicare?
- Charles Cassidy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Cassidy's NPI active?
- Yes — Charles Cassidy's NPI (1053351585) is active in the NPPES registry as of the last update on 2010-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.