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

Mrs. Michelle Marie Koester, WHNP

Individual provider Nurse Practitioner · NPI 1881962843

Mrs. Michelle Marie Koester, WHNP is a Nurse Practitioner in Saint Peters, Missouri. Qualified in 2011, 15 years ago. Practices with St Anthonys Physician Organization Hospitalist Services Lc, a 139-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
15
Licensed in
MO
In the registry since
2011
Specialties on file
2
What do these letters mean?
WHNP — Women's Health Nurse Practitioner
A nurse practitioner specialising in women's health.

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Practice location Address checks out

201 Bjc Saint Peters Dr Ste 200
Saint Peters, MO 63376-3386
Phone: (636) 916-9615
Fax: (636) 916-9850
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4901 Forest Park Ave, Saint Louis, MO 63108-1495 — (314) 454-7882

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 2000147926 (MO)
Women's Health Nurse Practitioner Taxonomy 363LW0102X · Licence 2011038536 (MO)

Record details

NPI number1881962843
Entity typeIndividual (Type 1)
GenderFemale
Credentials WHNP
Sole proprietorNo
NPI enumeratedDecember 6, 2011
Last updated in NPPESJanuary 29, 2026
Certification dateJanuary 29, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice St Anthonys Physician Organization Hospitalist Services Lc — 139 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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 $189 3 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.

Colleagues at St Anthonys Physician Organization Hospitalist Services Lc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 139 clinicians in the practice; 12 are shown here.

Other providers in Saint Peters