MIDDLESEX GASTROENTEROLGY,P.C.
NPI 1992845911
Specialist in Acton, MA
About Middlesex Gastroenterolgy,p.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MIDDLESEX GASTROENTEROLGY,P.C. (NPI 1992845911) is a healthcare organization registered as a specialist in Acton, Massachusetts and active in the NPI registry since February 2007. The organization lists Leeann C Iannarelli, Office Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Middlesex Gastroenterolgy,p.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
17Medicare enrollment records show 17 clinicians reassign Medicare billing to Middlesex Gastroenterolgy,p.C., which bills Medicare for the services they deliver. Of these, 8 practice at this address and 10 within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 5
Clinicians, nearest first (17)
Concord, MA 01742
Concord, MA 01742
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Middlesex Gastroenterolgy,p.C.'s NPI number?
The NPI number for Middlesex Gastroenterolgy,p.C. is 1992845911. It was assigned to this organization in the NPPES registry on February 7, 2007.
Where is Middlesex Gastroenterolgy,p.C. located?
Middlesex Gastroenterolgy,p.C. is located at 45 Discovery Way # B, Acton, MA 01720. The listed phone number is (978) 429-2010.
What is Middlesex Gastroenterolgy,p.C.'s specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Middlesex Gastroenterolgy,p.C. enrolled in Medicare?
Yes. Middlesex Gastroenterolgy,p.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Middlesex Gastroenterolgy,p.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 17 clinicians in 5 Medicare specialties reassign their Medicare billing to Middlesex Gastroenterolgy,p.C.. A 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 the clinician's services. The largest specialties are Gastroenterology (10), Nurse Practitioner (4) and Internal Medicine (1). Of these, 8 practice at this address and 10 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Middlesex Gastroenterolgy,p.C. was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Middlesex Gastroenterolgy,p.c. · NPI 1992845911
Specialist organization in Acton, Massachusetts. Organization record, active in the CMS NPPES registry since February 7, 2007.
## Identity
- **NPI:** 1992845911 (Entity type: Organization)
- **Enumerated:** February 7, 2007
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Organization subpart:** No
- **Authorized official:** Leeann Iannarelli, OFFICE MANAGER
## Practice location
- **Address:** 45 DISCOVERY WAY # B, Acton, MA 01720-4482
- **Phone:** (978) 429-2010 · **Fax:** (978) 264-1935
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 17 clinicians in 5 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Gastroenterology (10), Nurse Practitioner (4), Internal Medicine (1); 8 practice at this address and 10 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 21, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1992845911) · Data from the CMS NPPES public registry.