Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Harvard Vanguard Medical Associates

Clinical Nurse Specialist in Somerville, MA · enumerated 2007 · authorized official Debra Geihsler, Chief Executive Officer.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1730208554

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Registry record

Entity type Organization (Type 2)

Legal business name Harvard Vanguard Medical Associates

Practice address 40 Holland St, Somerville, MA, 02144

Phone (617) 629-6000

Fax (617) 629-6219

Enumeration date Mar 29, 2007

Last updated in NPPES Sep 11, 2025

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers Secondary

104100000X Social Worker Behavioral Health & Social Service Providers Secondary

364S00000X Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers Primary

Authorized official

Name Debra Geihsler

Title Chief Executive Officer

Phone (617) 559-8012

Other identifiers

Identifier	Type	State	Issuer
669498	Other	MA	TUFTS

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where is Harvard Vanguard Medical Associates located?

The practice location on file with NPPES is in Somerville, MA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-09-11. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.