John Cassidy Duffy, D.C.
NPI 1942481627ActiveIndividual· Chiropractor· Waltham, MA
Chiropractor (D.C.) in Waltham, Massachusetts, trained at Life Chiropractic College (class of 1991). Medicare paid $3,981 for services to 11 patients in 2024.
Overview
| NPI | 1942481627 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.C. |
| Sole proprietor | No |
| NPI issued | Nov 21, 2007 |
| Last updated in NPPES | Jul 25, 2023 |
| Certified by provider | Jul 25, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Chiropractor Primary | 111N00000X | 1644 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Chiropractic (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 113 across 2 procedure codes |
| Paid by Medicare | $3,981 |
Education and affiliations
| Medical school | Life Chiropractic College |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Chiropractic |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 18 chiropractors in Waltham · All chiropractors in Massachusetts