Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Todd W Knox, MD

Q: What is the NPI number for Todd Knox?

The National Provider Identifier (NPI) for Todd Knox is 1639158009, a Type 1 (individual) record in the CMS NPPES registry.

Anesthesiology Physician in Springfield, IL · enumerated 2006.

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

National Provider Identifier

1639158009

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Registry record

Entity type Individual (Type 1)

Name Todd W Knox

Credential MD

Sex Male

Practice address 701 N 1st St, Springfield, IL, 62781

Phone (217) 788-5495

Enumeration date Jan 12, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 036086329 (IL) 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
036086329	Other	IL	BC OF IL

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

Where does Todd Knox practice?

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

What is the NPI number for Todd Knox?

The National Provider Identifier (NPI) for Todd Knox is 1639158009, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.