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Michael Zack MD PC

Pulmonary Disease Physician in Medford, MA · enumerated 2007 · authorized official Michael Zack, President.

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

National Provider Identifier

1437365574

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Registry record

Entity type Organization (Type 2)
Legal business name Michael Zack MD PC
Practice address 101 Main St, Suite 110, Medford, MA, 02155
Phone (781) 391-6318
Enumeration date May 15, 2007
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 33803 (MA) Primary

Authorized official

Name Michael Zack
Title President
Phone (781) 391-6318

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 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.
What type of organization is Michael Zack MD PC?
Michael Zack MD PC is registered in NPPES as a Pulmonary Disease Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.