Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Louis Waldman, M.D.

Geriatric Medicine (Internal Medicine) Physician in La Grange, IL · enumerated 2010.

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

National Provider Identifier

1588981526

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Louis Waldman

Credential M.D.

Sex Male

Practice address 5101 Willow Springs Rd, La Grange, IL, 60525

Phone (708) 245-4073

Enumeration date Apr 30, 2010

Last updated in NPPES Jul 3, 2015

Taxonomy & licenses

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 52109 (CT) Secondary

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036138133 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

How do I verify Louis Waldman's NPI record?

Cross-check NPI 1588981526 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1588981526 active?

Yes, as of the latest NPPES snapshot, NPI 1588981526 is active (record last updated 2015-07-03).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-03.