Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOHN PHILLIP MARQUART MD
NPI 1417453317
Surgery - Trauma Surgery in Milwaukee, WI

Active since April 01, 2018PECOS Enrolled
8701 W WATERTOWN PLANK RD, MILWAUKEE, WI 53226(414) 955-1833 Get Directions Write a Review

NPPES record last updated: August 11, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Dr. John Phillip Marquart Md NPPES

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

DR. JOHN PHILLIP MARQUART MD (NPI 1417453317) is an individual trauma surgery provider in Milwaukee, Wisconsin, licensed in Wisconsin (7231020) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1417453317
Entity TypeIndividualMale
Primary Taxonomy2086S0127X
Provider Legal NameDR. JOHN PHILLIP MARQUARTCredential: MD
Location Address8701 W WATERTOWN PLANK RDMilwaukee, WI 53226-3548
Mailing Address8701 W Watertown Plank RdMilwaukee, WI 53226-3548
Sole ProprietorNo
Enumeration DateApril 1, 2018
Last NPPES UpdateAugust 11, 2026
NPPES CertifiedAugust 11, 2026
NPI 1417453317 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySurgery · Trauma SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0127X
License Licensed in WI · 7231020
Definition
Trauma surgery is a recognized subspecialty of general surgery. Trauma surgeons are physicians who have completed a five-year general surgery residency and usually continue with a one to two year fellowship in trauma and/or surgical critical care, typically leading to additional board certification in surgical critical care. There is no trauma surgery board certification at this point. To obtain board certification in surgical critical care, a fellowship in surgical critical care or anesthesiology critical care must be completed during or after general surgery residency.
8701 W WATERTOWN PLANK RD, Milwaukee, WI 53226

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. John Phillip Marquart Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Pathology (Anatomic Pathology & Clinical Pathology)
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Student in an Organized Health Care Education/Training Program
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Emergency Medicine
8701 W WATERTOWN PLANK RD, MEDICAL COLLEGE OF WISCONSIN AFFILIATED HOSPITALS
MILWAUKEE, WI 53226
Student in an Organized Health Care Education/Training Program
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Radiology (Vascular & Interventional Radiology)
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Student in an Organized Health Care Education/Training Program
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Internal Medicine
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Student in an Organized Health Care Education/Training Program
8701 W WATERTOWN PLANK RD
WAUWATOSA, WI 53226

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Marquart's NPI number?

The NPI number for John Marquart is 1417453317. It was assigned to this individual provider in the NPPES registry on April 1, 2018.

Where is John Marquart located?

John Marquart practices at 8701 W Watertown Plank Rd, Milwaukee, WI 53226. The listed phone number is (414) 955-1833.

What is John Marquart's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Trauma Surgery, with taxonomy code 2086S0127X.

Is John Marquart enrolled in Medicare?

Yes. John Marquart is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for John Marquart was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.