CORNERSTONE MEDICAL GROUP, LLC
NPI 1366797771
Clinic/Center - Primary Care in Brookline, MA

Active since July 23, 2012CLIA 22D2053051 · Waiver
1101 BEACON ST, SUITE 2 WEST, BROOKLINE, MA 02446(617) 775-7804 Get Directions Write a Review

NPPES record last updated: July 23, 2012. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Cornerstone Medical Group, Llc NPPES

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

CORNERSTONE MEDICAL GROUP, LLC (NPI 1366797771) is a healthcare organization registered as a primary care in Brookline, Massachusetts and active in the NPI registry since July 2012. The organization holds a CLIA Waiver certificate valid through January 23, 2027 and lists Jonathan R Blumberg, Manager, as its authorized official.

NPPES Registry Identity

NPI1366797771
Entity TypeOrganization
Primary Taxonomy261QP2300X
Legal Business NameCORNERSTONE MEDICAL GROUP, LLC
Location Address1101 BEACON ST, SUITE 2 WESTBrookline, MA 02446-5587
Mailing Address1101 Beacon St, Suite 2 WestBrookline, MA 02446-5587 · (617) 775-7804
Organization SubpartNo
Authorized OfficialJonathan R BlumbergManager · (617) 775-7804
Enumeration DateJuly 23, 2012
NPI 1366797771 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 · 206504
1101 BEACON ST, Brookline, MA 02446

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 22D2053051

Cornerstone Medical Group LLC · Brookline, MA
Active · expires Jan 23, 2027
CLIA Number22D2053051
Laboratory TypePhysician Office
Certificate Effective DateJanuary 24, 2025
Certificate Expiration DateJanuary 23, 2027
Laboratory DirectorJonathan R. Blumberg
Laboratory Phone(617) 731-6334
Laboratory LocationCornerstone Medical Group LLC1101 Beacon Street Suite 2W, Brookline, MA 02446
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Psychologist (Clinical)
1101 BEACON ST, SUITE TWO EAST
BROOKLINE, MA 02446
Specialist
1101 BEACON ST, SUITE 1E
BROOKLINE, MA 02446
Internal Medicine
1101 BEACON ST
BROOKLINE, MA 02446
Social Worker (Clinical)
1101 BEACON ST
BROOKLINE, MA 02446
Psychologist (Clinical)
1101 BEACON ST
BROOKLINE, MA 02446
Social Worker (Clinical)
1101 BEACON ST, 5 WEST
BROOKLINE, MA 02446
Dietitian, Registered
1101 BEACON ST, SUITE 4W
BROOKLINE, MA 02446
Internal Medicine
1101 BEACON ST
BROOKLINE, MA 02446

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 Cornerstone Medical Group, LLC's NPI number?

The NPI number for Cornerstone Medical Group, LLC is 1366797771. It was assigned to this organization in the NPPES registry on July 23, 2012.

Where is Cornerstone Medical Group, LLC located?

Cornerstone Medical Group, LLC is located at 1101 Beacon St Suite 2 West, Brookline, MA 02446. The listed phone number is (617) 775-7804.

What is Cornerstone Medical Group, LLC's specialty?

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

Does Cornerstone Medical Group, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 22D2053051) is associated with this NPI, valid through January 23, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Cornerstone Medical Group, LLC was last updated on July 23, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.