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MARLBORO INTERNAL MEDICINE P.C
NPI 1477764116
Clinic/Center - Primary Care in Marlborough, MA

Active since May 24, 2007
65 FREMONT ST, MARLBOROUGH, MA 01752(508) 303-8553(508) 303-0665 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Marlboro Internal Medicine P.c NPPES

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

MARLBORO INTERNAL MEDICINE P.C (NPI 1477764116) is a healthcare organization registered as a primary care in Marlborough, Massachusetts and active in the NPI registry since May 2007. The organization lists Lalita Matta, Owner, as its authorized official.

NPPES Registry Identity

NPI1477764116
Entity TypeOrganization
Primary Taxonomy261QP2300X
Legal Business NameMARLBORO INTERNAL MEDICINE P.C
Location Address65 FREMONT STMarlborough, MA 01752-1271
Mailing Address65 Fremont StMarlborough, MA 01752-1271 · (508) 303-8553 · Fax (508) 303-0665
Phone(508) 303-8553
Fax(508) 303-0665
Organization SubpartNo
Authorized OfficialLalita MattaOwner · (508) 303-8553
Enumeration DateMay 24, 2007
Last NPPES UpdateAugust 22, 2020
✔ NPI 1477764116 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Primary CareAmbulatory Health Care Facilities
Taxonomy Code261QP2300X
License✔ Licensed in MA · 78051
65 FREMONT ST, Marlborough, MA 01752
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marlboro Internal Medicine P.c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Marlboro Internal Medicine P.C, which bills Medicare for the services they deliver. Of these, 3 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Maria Estrela Chaves, NP
Nurse Practitioner
NPI 1992000442
65 FREMONT ST SUITE #4
Marlborough, MA 01752
(508) 303-8553
✔ PECOSSame address
Samantha Ormond, RN
Nurse Practitioner
NPI 1992246508
65 FREMONT STREET
Marlborough, MA 01752
(508) 303-8553
✔ PECOS✔ Accepts MedicareSame address
Lalita Matta, M.D.
Internal Medicine
NPI 1043232663
65 FREMONT ST
Marlborough, MA 01752
(508) 303-8553
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 22D1004757

Marlborough Internal Medicine PC · Marlboro, MA
Expired · Oct 3, 2026
CLIA Number22D1004757
Laboratory TypePhysician Office
Certificate Effective DateOctober 4, 2024
Certificate Expiration DateOctober 3, 2026
Laboratory DirectorLalita A. Matta
Laboratory Phone(508) 303-8553
Laboratory LocationMarlborough Internal Medicine PC65 Fremont St, Marlboro, MA 01752
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Marlboro Internal Medicine P.C's NPI number?

The NPI number for Marlboro Internal Medicine P.C is 1477764116. It was assigned to this organization in the NPPES registry on May 24, 2007.

Where is Marlboro Internal Medicine P.C located?

Marlboro Internal Medicine P.C is located at 65 Fremont St, Marlborough, MA 01752. The listed phone number is (508) 303-8553.

What is Marlboro Internal Medicine P.C's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.

Is Marlboro Internal Medicine P.C enrolled in Medicare?

Yes. Marlboro Internal Medicine P.C is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Marlboro Internal Medicine P.C?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Marlboro Internal Medicine P.C, in Internal Medicine and Nurse Practitioner. 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. Of these, 3 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Marlboro Internal Medicine P.C was last updated on August 22, 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.