JOHN P PARKER MD - NPI 1861592073 - Internal Medicine in Marshfield, WI

Q: What is John Parker's NPI number?

The NPI number for John Parker is 1861592073. It was assigned to this individual provider in the NPPES registry on September 25, 2006.

Q: What is John Parker's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for John Parker was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

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About John P Parker Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN P PARKER MD (NPI 1861592073) is an individual internal medicine provider in Marshfield, Wisconsin, licensed in Wisconsin (16564) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1861592073

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameJOHN P PARKERCredential: MD

Location Address1000 N OAK AVEMarshfield, WI 54449

Mailing Address1000 N Oak AveMarshfield, WI 54449-5777

Phone(715) 387-5853

Sole ProprietorNo

Enumeration DateSeptember 25, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1861592073 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in WI · 16564

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X · License 16564 (WI)

Other Identifiers 1

Medicaid31255100WI

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALISON RAE SAMPSON D.O.

Obstetrics & Gynecology