Quick answers
- Where does Peter R. Casson see patients?
- Medicare's clinician data lists 1 practice location in Sioux Falls, SD. Call before your visit to confirm the address.
- What is Peter R. Casson's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty, and also Endocrinology.
- Does Peter R. Casson accept Medicare assignment?
- Yes. Medicare's clinician data says Peter R. Casson 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 Peter R. Casson's NPI number?
- 1295741965. 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 Peter R. Casson is enrolled with Medicare (CMS data updated 2026-10-02).
- PO Box, Suite 5074Sioux Falls, SD 57117
Specialties
- Obstetrics/Gynecologyprimary
- Endocrinologyalso
Other OB-GYNs in Sioux Falls
Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295741965 |
| 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