Quick answers
- Where does Tonya E. Buchanan see patients?
- Medicare's clinician data lists 1 practice location in Saint Louis, MO. Call before your visit to confirm the address.
- What is Tonya E. Buchanan's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Tonya E. Buchanan accept Medicare assignment?
- Yes. Medicare's clinician data says Tonya E. Buchanan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Tonya E. Buchanan?
- (314) 888-0981, as listed in official Medicare / NPI Registry data.
- What is Tonya E. Buchanan's NPI number?
- 1043556467. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Tonya E. Buchanan is enrolled with Medicare (CMS data updated 2026-10-02).
- 3843 Gravois Ave, Oak Street Health Tower GroveSaint Louis, MO 63116 (314) 888‑0981
Group practices
Medicare enrollment lists Tonya E. Buchanan as a member of this group (CMS data updated 2026-10-02).
- Oak Street Health Physicians Group of Missouri LLC26 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043556467 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians