SOUTH SHORE INTERNAL MEDICINE ASSOCIATES INC.
NPI 1053475012
Internal Medicine - Rheumatology in Milton, MA
About South Shore Internal Medicine Associates Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SOUTH SHORE INTERNAL MEDICINE ASSOCIATES INC. (NPI 1053475012) is a healthcare organization registered as a rheumatology in Milton, Massachusetts and active in the NPI registry since December 2006. The organization lists Tracy Stein, Practice Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 4
Other Identifiers 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
South Shore Internal Medicine Associates Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
15Medicare enrollment records show 15 clinicians reassign Medicare billing to South Shore Internal Medicine Associates Inc., which bills Medicare for the services they deliver. Of these, 7 practice at this address and 12 within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 4
Clinicians, nearest first (15)
Milton, MA 02186
Milton, MA 02186
West Roxbury, MA 02132
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 South Shore Internal Medicine Associates Inc.'s NPI number?
The NPI number for South Shore Internal Medicine Associates Inc. is 1053475012. It was assigned to this organization in the NPPES registry on December 21, 2006.
Where is South Shore Internal Medicine Associates Inc. located?
South Shore Internal Medicine Associates Inc. is located at 100 Highland St Suite 300, Milton, MA 02186. The listed phone number is (617) 698-8855.
What is South Shore Internal Medicine Associates Inc.'s specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is South Shore Internal Medicine Associates Inc. enrolled in Medicare?
Yes. South Shore Internal Medicine Associates Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through South Shore Internal Medicine Associates Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 15 clinicians in 4 Medicare specialties reassign their Medicare billing to South Shore Internal Medicine Associates Inc.. 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 Internal Medicine (8), Cardiovascular Disease (Cardiology) (5) and Gastroenterology (1). Of these, 7 practice at this address and 12 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does South Shore Internal Medicine Associates Inc. accept?
Health plans from Anthem Blue Cross and Blue Shield, Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) list South Shore Internal Medicine Associates Inc. 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 South Shore Internal Medicine Associates Inc. was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.
# South Shore Internal Medicine Associates Inc. · NPI 1053475012
Rheumatology organization in Milton, Massachusetts. Organization record, active in the CMS NPPES registry since December 21, 2006.
## Identity
- **NPI:** 1053475012 (Entity type: Organization)
- **Enumerated:** December 21, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **Organization subpart:** No
- **Authorized official:** Tracy Stein, PRACTICE MANAGER
## Practice location
- **Address:** 100 HIGHLAND ST, SUITE 300, Milton, MA 02186-3881
- **Phone:** (617) 698-8855
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 15 clinicians in 4 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (8), Cardiovascular Disease (Cardiology) (5), Gastroenterology (1); 7 practice at this address and 12 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 11, 2025
- **Other identifiers:** Medicaid 9778845 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1053475012) · Data from the CMS NPPES public registry.