Charles Cassidy, MD

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

• Massachusetts General Hospital Hospital · Boston, MA
• Tufts Medical Center Hospital · Boston, MA

Colleagues at Pratt Orthopaedic Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 30 clinicians in the practice; 12 are shown here.

• Dr. Amy Lynn Brown, MD Orthopaedic Surgery Physician · Camp Hill, PA
• Timothy Curran, DPM Surgery Physician · Boston, MA
• Atsushi Endo, MD Sports Medicine (Family Medicine) Physician · Gainesville, FL
• Lisa Gordon, PA Surgical Physician Assistant · Boston, MA
• Jillian Rose Keating Medical Physician Assistant · Boston, MA
• Courtney McCarrick, PA-C Physician Assistant · Boston, MA
• Ikenna Chibuzor Neboh, PA-C Physician Assistant · Saugus, MA
• Jessica Ann Roth Surgical Physician Assistant · Boston, MA
• Dr. Scott Patrick Ryan, MD Orthopaedic Trauma Physician · Boston, MA
• Daniel Chichek Sun, MD Orthopaedic Surgery Physician · Boston, MA
• Dr. Tracy Allison Webber, MD Orthopaedic Hand Surgery Physician · Boston, MA
• Corey David Williams Physician Assistant · Windham, NH

Other providers in Boston

• Dr. Fernando Daniel Arias, MD

  Individual Orthopaedic Hand Surgery Physician · NPI 1144885112

  330 Brookline Ave, Boston, MA 02215-5400 · (617) 667-7000

• Philip Blazar, MD

  Individual Orthopaedic Hand Surgery Physician · NPI 1497733158

  75 Francis St Brigham And Womens Hospital Dept OF Orthopedic Surgery, Boston, MA 02115 · (617) 732-8550

• Arriyan Dowlatshahi, MD

  Individual Orthopaedic Hand Surgery Physician · NPI 1124331061

  330 Brookline Ave, Boston, MA 02215-5400 · (617) 667-3940

• Brandon E Earp, MD

  Individual Orthopaedic Hand Surgery Physician · NPI 1285690479

  75 Francis Street Brigham And Women's Hospital Dept OF Orthopedic Surgery, Boston, MA 02115 · (617) 732-5249

• Nicholas Golinvaux, MD

  Individual Orthopaedic Hand Surgery Physician · NPI 1891181012

  75 Francis St, Boston, MA 02115-6110 · (617) 732-5384

• Benjamin Gundlach, MD

  Individual Orthopaedic Hand Surgery Physician · NPI 1346696507

  300 Longwood Ave, Boston, MA 02115-5724 · (617) 355-6000