Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Tonya Elaine Buchanan, ANP-BC

Individual provider Adult Health Nurse Practitioner · NPI 1043556467

Tonya Elaine Buchanan, ANP-BC is a Nurse Practitioner in Saint Louis, Missouri. Qualified in 2011, 15 years ago. Practices with Oak Street Health Physicians Group of Missouri LLC, a 25-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
15
Licensed in
MO
In the registry since
2012
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Practice location Address checks out

3655 Vista Ave Center For Blood And Marrow Outpatient Transplantation
Saint Louis, MO 63110-2539 Not confirmed with CMS for 13 years — call before visiting
Phone: (314) 577-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence 2012030521 (MO)

Record details

NPI number1043556467
Entity typeIndividual (Type 1)
GenderFemale
Credentials ANP-BC
Sole proprietorNo
NPI enumeratedDecember 13, 2012
Last updated in NPPESDecember 13, 2012

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 Oak Street Health Physicians Group Of Missouri Llc — 25 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients72
Services billed 178 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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 $23 1 payment · 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.

Colleagues at Oak Street Health Physicians Group of Missouri LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 25 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis