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Medical Office of John Vassallo MD Pllc

Internal Medicine Physician in Howell, MI · enumerated 2006 · authorized official John Vassallo, Owner.

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

National Provider Identifier

1487712121

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Registry record

Entity type Organization (Type 2)
Legal business name Medical Office of John Vassallo MD Pllc
Practice address 4354 E Grand River Ave, Howell, MI, 48843
Phone (517) 540-0709
Fax (517) 540-1775
Enumeration date Dec 5, 2006
Last updated in NPPES Apr 13, 2026

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 4301078585 (MI) Primary

Authorized official

Name John Vassallo
Title Owner
Phone (517) 548-0010

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 type of organization is Medical Office of John Vassallo MD Pllc?
Medical Office of John Vassallo MD Pllc is registered in NPPES as a Internal Medicine Physician (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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-13.