DR. MARC A THEROUX MD
NPI 1497742514
Internal Medicine in Fall River, MA
About Dr. Marc A Theroux Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARC A THEROUX MD (NPI 1497742514) is an individual internal medicine provider in Fall River, Massachusetts, licensed in Massachusetts (72558) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Marc A Theroux Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Marc Theroux reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fairhaven, MA 02719
- Reassigned Medicare billing, Rhode Island enrollment
- 121 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 9
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02720 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 13
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Marc Theroux's NPI number?
The NPI number for Marc Theroux is 1497742514. It was assigned to this individual provider in the NPPES registry on October 4, 2005.
Where is Marc Theroux located?
Marc Theroux practices at 534 Prospect St, Fall River, MA 02720. The listed phone number is (508) 973-7766.
What is Marc Theroux's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Marc Theroux enrolled in Medicare?
Yes. Marc Theroux is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Marc Theroux's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marc Theroux reassigns Medicare benefits to Southcoast Physicians Group, Inc. (Fairhaven, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marc Theroux's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marc Theroux accept?
Health plans from Anthem Blue Cross and Blue Shield list Marc Theroux 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 Marc Theroux was last updated on April 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.