1. Home
  2. Directory
  3. Massachusetts
  4. Waltham
  5. Chiropractor
  6. NPI Profile

DR. JOHN CASSIDY DUFFY D.C.
NPI 1942481627
Chiropractor in Waltham, MA

Active since November 21, 2007Accepts Medicare Assignment
136 BACON ST, WALTHAM, MA 02451(781) 894-4270 Get Directions Write a Review

NPPES record last updated: July 25, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. John Cassidy Duffy D.c. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN CASSIDY DUFFY D.C. (NPI 1942481627) is an individual chiropractor in Waltham, Massachusetts, licensed in Massachusetts (1644) and active in the NPI registry since November 2007. He is a graduate of Life Chiropractic College (1991).

NPPES Registry Identity

NPI1942481627
Entity TypeIndividualMale
Primary Taxonomy111N00000X
Provider Legal NameDR. JOHN CASSIDY DUFFYCredential: D.C.
Location Address136 BACON STWaltham, MA 02451-0797
Mailing Address136 Bacon StWaltham, MA 02451-0797 · (781) 894-4270
Phone(781) 894-4270
Sole ProprietorNo
Medical School CMSLife Chiropractic CollegeGraduated 1991
Enumeration DateNovember 21, 2007
Last NPPES UpdateJuly 25, 2023
NPPES CertifiedJuly 25, 2023
✔ NPI 1942481627 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers
Taxonomy Code111N00000X
License✔ Licensed in MA · 1644
Definition
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.
136 BACON ST, Waltham, MA 02451
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. John Cassidy Duffy D.c. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305919135
PECOS Enrollment IDI20080726000029

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Duffy's NPI number?

The NPI number for John Duffy is 1942481627. It was assigned to this individual provider in the NPPES registry on November 21, 2007.

Where is John Duffy located?

John Duffy practices at 136 Bacon St, Waltham, MA 02451. The listed phone number is (781) 894-4270.

What is John Duffy's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Is John Duffy enrolled in Medicare?

Yes. John Duffy is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does John Duffy accept?

Health plans from Anthem Blue Cross and Blue Shield list John Duffy as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Duffy was last updated on July 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.