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Leo Liu, MD

Infectious Disease Physician in Lawrence, MA · enumerated 2015 · authorized official Leo Liu, Owner.

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

National Provider Identifier

1548633118

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Registry record

Entity type Organization (Type 2)
Legal business name Leo Liu, MD
Practice address 1 General St, Lawrence, MA, 01841
Phone (781) 724-9041
Enumeration date Nov 4, 2015
Last updated in NPPES Jun 29, 2025

Taxonomy & classification

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 56228 (MA) Primary

Authorized official

Name Leo Liu
Title Owner
Phone (781) 724-9041

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 Leo Liu, MD?
Leo Liu, MD is registered in NPPES as a Infectious Disease Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-29.