Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Olivia Jo Ludwig, M.D.

Anatomic Pathology & Clinical Pathology Physician in Belleville, IL · enumerated 2007.

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

National Provider Identifier

1326240102

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Registry record

Entity type Individual (Type 1)

Name Dr. Olivia Jo Ludwig

Credential M.D.

Sex Female

Practice address 211 S 3rd St, Belleville, IL, 62220

Phone (618) 234-2120

Fax (618) 222-4630

Enumeration date Jun 4, 2007

Last updated in NPPES Feb 23, 2017

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 2007018019 (MO) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 036137299 (IL) Primary

207ZH0000X Hematology (Pathology) Physician Allopathic & Osteopathic Physicians · License 036137299 (IL) Secondary

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

What is the NPI number for Olivia Ludwig?

The National Provider Identifier (NPI) for Olivia Ludwig is 1326240102, a Type 1 (individual) record in the CMS NPPES registry.

Where does Olivia Ludwig practice?

The practice location on file with NPPES is in Belleville, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-23.