Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Peggy Wanner-Barjenbruch, MD

Individual provider Internal Medicine Physician · NPI 1326023185

Dr. Peggy Wanner-Barjenbruch, MD practises Internal Medicine in Mexico, Missouri. Graduated from University of Kansas School of Med (KC/WICH/SAL) in 1982, 44 years ago. Practices with Boone Physician Services LLC, a 240-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
44
Trained at
University of Kansas School of Med (KC/WICH/SAL)
Licensed in
MO
In the registry since
2005
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

600 Medical Park Dr
Mexico, MO 65265-3724
Phone: (573) 581-8500
Fax: (573) 581-5397
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence R2F18 (MO)

Record details

NPI number1326023185
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 14, 2005
Last updated in NPPESOctober 28, 2022
Certification dateOctober 28, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated 1982 (44 years in practice)
Group practice Boone Physician Services Llc — 240 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 patients428
Services billed 2,580 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $135 7 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • University Of Missouri Health Care Hospital · Columbia, MO · listed as University of Mo Health Care
  • Community Loving Care Hospice Hospice · Wentzville, MO · listed as Community Loving Care Hospice, LLC
  • Heritage Hall Nursing Center Nursing home · Centralia, MO · listed as Americare at Heritage Hall Nursing Center, LLC
  • Boone Hospital Center Hospital · Columbia, MO
  • Centerwell Home Health Home health agency · Columbia, MO
  • Elara Caring Home health agency · Jefferson City, MO
  • Hospice Compassus-North Central Missouri Hospice · Columbia, MO
  • St. Croix Hospice Hospice · Moberly, MO
  • Pin Oaks Living Center Nursing home · Mexico, MO

Colleagues at Boone Physician Services LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 240 clinicians in the practice; 12 are shown here.

Other providers in Mexico