Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Lloyd W Klein MD Sc

Q: What type of organization is Lloyd W Klein MD Sc?

Lloyd W Klein MD Sc is registered in NPPES as a Cardiovascular Disease Physician (its primary provider taxonomy).

Cardiovascular Disease Physician in Melrose Park, IL · enumerated 2007 · authorized official Lloyd Klein, Officer.

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

National Provider Identifier

1255538997

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Registry record

Entity type Organization (Type 2)

Legal business name Lloyd W Klein MD Sc

Practice address 675 W North Ave, Suite 202, Melrose Park, IL, 60160

Phone (708) 681-7878

Fax (708) 681-7873

Enumeration date Jun 27, 2007

Last updated in NPPES Oct 20, 2014

Taxonomy & classification

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 036076526 (IL) Primary

Authorized official

Name Lloyd Klein

Title Officer

Phone (708) 460-9836

Other identifiers

Identifier	Type	State	Issuer
215397	Other	-	MEDICARE GROUP

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 type of organization is Lloyd W Klein MD Sc?

Lloyd W Klein MD Sc is registered in NPPES as a Cardiovascular Disease 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-20.