Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Leonard A Mannarelli II, D.O. Inc.

Internal Medicine Physician in Cranston, RI · enumerated 2008 · authorized official Leonard Mannarelli, Owner.

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

National Provider Identifier

1134388820

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Registry record

Entity type Organization (Type 2)

Legal business name Leonard A Mannarelli II, D.O. Inc.

Practice address 135 Atwood Ave, Cranston, RI, 02920

Phone (401) 944-1748

Fax (401) 944-1746

Enumeration date Jun 6, 2008

Last updated in NPPES Jun 6, 2008

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License DO452 (RI) Primary

Authorized official

Name Leonard Mannarelli

Title Owner

Phone (401) 944-1748

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 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 Leonard A Mannarelli II, D.O. Inc.?

Leonard A Mannarelli II, D.O. Inc. is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-06.