Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. John Seidl, MD

Individual provider Family Medicine Physician · NPI 1700838430

Dr. John Seidl, MD is registered under Family Practice in Milwaukee, Wisconsin. Graduated from Medical College of Wisconsin in 1982, 44 years ago. Practices with Outreach Community Health Centers Inc, a 52-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
44
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1121 E North Ave Columbia-St Mary's Family Practice
Milwaukee, WI 53212-3515
Phone: (414) 267-6500
Fax: (414) 267-3894
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • W180n8000 Town Hall Rd, Menomonee Falls, WI 53051-4002 — (262) 255-2500

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 25426 (WI)

Record details

NPI number1700838430
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 17, 2006
Last updated in NPPESMarch 6, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1982 (44 years in practice)
Group practice Outreach Community Health Centers Inc — 52 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients21
Services billed 28 a service is one billed item, such as a visit, a test or a procedure
Average patient age59

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Outreach Community Health Centers Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 52 clinicians in the practice; 12 are shown here.

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