NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Thomas E Ludwig, MD

Pediatrics Physician in Valparaiso, IN · enumerated 2006 · practices at Urology Associates of Northwest Indiana PC.

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

National Provider Identifier

1659318426

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. Thomas E Ludwig
Credential MD
Sex Male
Practice address 1101 E Glendale Blvd, Ste 101, Valparaiso, IN, 46383
Phone (219) 462-0555
Fax (219) 548-3681
Enumeration date Jun 1, 2006
Last updated in NPPES May 9, 2013

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 01029017 (IN) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
000000187212 Other IN ANTHEM
100208360 Medicaid IN -

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 the NPI number for Thomas Ludwig?
The National Provider Identifier (NPI) for Thomas Ludwig is 1659318426, a Type 1 (individual) record in the CMS NPPES registry.
Where does Thomas Ludwig practice?
The practice location on file with NPPES is in Valparaiso, IN. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-09.