Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jacob William Lonsdale, M.D.

Orthopaedic Surgery Physician in Marshfield, WI · enumerated 2007.

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

National Provider Identifier

1053505958

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Registry record

Entity type Individual (Type 1)

Name Jacob William Lonsdale

Credential M.D.

Sex Male

Practice address 1000 N Oak Ave, Marshfield, WI, 54449

Phone (715) 387-5202

Fax (715) 387-5754

Enumeration date Sep 4, 2007

Last updated in NPPES Nov 3, 2020

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 52577 (WI) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 52577 (WI) 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.

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Frequently asked questions

How do I verify Jacob Lonsdale's NPI record?

Cross-check NPI 1053505958 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1053505958 active?

Yes, as of the latest NPPES snapshot, NPI 1053505958 is active (record last updated 2020-11-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-03.