Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Harvard Vanguard Medical Associates

Social Worker in Boston, MA · enumerated 2007 · authorized official Debra Geihsler, Chief Executive Officer.

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

National Provider Identifier

1003939703

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Registry record

Entity type Organization (Type 2)

Legal business name Harvard Vanguard Medical Associates

Practice address 133 Brookline Ave, Boston, MA, 02215

Phone (617) 421-1000

Fax (617) 421-1191

Enumeration date Apr 9, 2007

Last updated in NPPES Sep 11, 2025

Taxonomy & classification

104100000X Social Worker Behavioral Health & Social Service Providers Primary

122300000X Dentist Dental Providers Secondary

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians Secondary

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Secondary

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

Authorized official

Name Debra Geihsler

Title Chief Executive Officer

Phone (617) 559-8012

Other identifiers

Identifier	Type	State	Issuer
9782834	Medicaid	MA	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Harvard Vanguard Medical Associates?

Harvard Vanguard Medical Associates is registered in NPPES as a Social Worker (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

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Claire Cronin Surgery Physician · Boston, MA NPI 1720084833 Renu Soni Internal Medicine Physician · Boston, MA NPI 1649276585 Marshall Katz Cardiovascular Disease Physician · Boston, MA NPI 1124024013 James Wharam Internal Medicine Physician · Boston, MA NPI 1740280288 Jennifer Fournier Nurse Practitioner · Boston, MA NPI 1801898275 David Agoada Podiatrist · Boston, MA NPI 1558353714 Christopher Andreoli Ophthalmology Physician · Boston, MA NPI 1134112188 Jerome Auerbach Diagnostic Radiology Physician · Boston, MA NPI 1417942129

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