Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Peter Johnson, MD

Obstetrics & Gynecology Physician in Marshfield, WI · enumerated 2007.

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

National Provider Identifier

1881819183

Verified

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Registry record

Entity type Individual (Type 1)

Name Peter Johnson

Credential MD

Sex Male

Practice address Marshfield, WI, 54449

Phone (715) 387-5161

Enumeration date Apr 13, 2007

Last updated in NPPES Apr 5, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 4301086033 (MI) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 54873-020 (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

Where does Peter Johnson practice?

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

What is the NPI number for Peter Johnson?

The National Provider Identifier (NPI) for Peter Johnson is 1881819183, 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 2024-04-05.