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Merrimack Valley Internal Medicine

Internal Medicine Physician in Bedford, MA · enumerated 2026 · authorized official Michael Bertos, Owner.

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

National Provider Identifier

1801722210

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Registry record

Entity type Organization (Type 2)
Legal business name Merrimack Valley Internal Medicine
Practice address 22 Webber Ave, Bedford, MA, 01730
Phone (978) 430-2975
Enumeration date Jun 23, 2026
Last updated in NPPES Aug 17, 2026

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Michael Bertos
Title Owner
Phone (978) 459-2152

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

What is the NPI number for Merrimack Valley Internal Medicine?
The NPI for Merrimack Valley Internal Medicine is 1801722210, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Merrimack Valley Internal Medicine?
NPPES lists Michael Bertos (Owner) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-17.