Quick answers
- Does Mason T. Callahan accept Medicare assignment?
- Yes. Medicare's clinician data says Mason T. Callahan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Mason T. Callahan's NPI number?
- 1053104406. 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 Mason T. Callahan is enrolled with Medicare (CMS data updated October 2, 2026).
- 3188 Bellevue AveCincinnati, OH 45219 (513) 584‑1000
- 7675 Wellness WayWest Chester, OH 45069 (513) 475‑7400
Group practices
Medicare enrollment lists Mason T. Callahan as a member of this group (CMS data updated October 2, 2026).
- University of Cincinnati Physicians Company LLC1,506 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Cincinnati
Clinicians with the same Medicare primary specialty in Cincinnati, OH — not a recommendation.
Other clinicians in University of Cincinnati Physicians Company LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2025 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053104406 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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