Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Cornerstone Medical Group, LLC

Organization Primary Care Clinic/Center · NPI 1366797771

Cornerstone Medical Group, LLC is a Primary Care Clinic/Center in Brookline, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2012.

Licensed in
MA
In the registry since
2012
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1101 Beacon St Ste 2 West
Brookline, MA 02446-5587
Phone: (617) 775-7804
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Primary Care Clinic/Center (primary) Taxonomy 261QP2300X · Licence 206504 (MA)

Record details

NPI number1366797771
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Jonathan Blumberg — Manager · (617) 775-7804
NPI enumeratedJuly 23, 2012
Last updated in NPPESJuly 23, 2012
Mailing address1101 Beacon St, Suite 2 West, Brookline, MA 02446-5587

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