Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Diamond Dialysis of Oak Lawn

Q: What is the NPI number for Diamond Dialysis of Oak Lawn?

The NPI for Diamond Dialysis of Oak Lawn is 1699772525, a Type 2 (organization) record in the CMS NPPES registry.

End-Stage Renal Disease (ESRD) Treatment Clinic/Center in Oak Lawn, IL · enumerated 2005 · authorized official Arlene Kalafut, President.

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

National Provider Identifier

1699772525

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Registry record

Entity type Organization (Type 2)

Legal business name Diamond Dialysis of Oak Lawn

Practice address 9115 S Cicero Ave, Suite B, Oak Lawn, IL, 60453

Phone (708) 423-0300

Fax (708) 423-7730

Enumeration date Jul 7, 2005

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

261QE0700X End-Stage Renal Disease (ESRD) Treatment Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Arlene Kalafut

Title President

Phone (708) 423-0300

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

Who is the authorized official for Diamond Dialysis of Oak Lawn?

NPPES lists Arlene Kalafut (President) as the authorized official for this organization.

What is the NPI number for Diamond Dialysis of Oak Lawn?

The NPI for Diamond Dialysis of Oak Lawn is 1699772525, a Type 2 (organization) record in the CMS NPPES registry.

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