Quick answers
- Which hospitals does Joanna D. Twombly work at?
- Medicare's official clinician data lists Joanna D. Twombly at 1 hospital: Lake Regional Health System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Joanna D. Twombly see patients?
- Medicare's clinician data lists 4 practice locations, including Austin, MN, Bolivar, MO and Osage Beach, MO. Call before your visit to confirm the address.
- What is Joanna D. Twombly's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Joanna D. Twombly accept Medicare assignment?
- Yes. Medicare's clinician data says Joanna D. Twombly 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 Joanna D. Twombly?
- (507) 433-7351, as listed in official Medicare / NPI Registry data.
- What is Joanna D. Twombly's NPI number?
- 1780857284. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joanna D. Twombly works
Medicare's Facility Affiliation Data lists Joanna D. Twombly at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lake Regional Health SystemOsage Beach, MO · Acute Care Hospital · CCN 260186
Practice locations
Addresses where Joanna D. Twombly is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 1st Dr NWAustin, MN 55912 (507) 433‑7351
- 1500 N Oakland AveBolivar, MO 65613 (417) 328‑6631
- 1500 N Oakland Ave, CMH DiabetesBolivar, MO 65613 (417) 328‑6040
- 54 Hospital DrOsage Beach, MO 65065
Group practices
Medicare enrollment lists Joanna D. Twombly as a member of these groups (CMS data updated 2026-10-02).
- Mayo Clinic Health System-Southeast Minnesota Region551 clinicians in the group
- Citizens Memorial Healthcare146 clinicians in the group
- Lake Regional Health System138 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Austin
Clinicians with the same Medicare primary specialty in Austin, MN — not a recommendation.
Clinician information
| Graduation year | 2008 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780857284 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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