Quick answers
- Which hospitals does Ralph Oiknine work at?
- Medicare's official clinician data lists Ralph Oiknine at 1 hospital: St Lukes Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ralph Oiknine see patients?
- Medicare's clinician data lists 1 practice location in Chesterfield, MO. Call before your visit to confirm the address.
- What is Ralph Oiknine's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does Ralph Oiknine accept Medicare assignment?
- Yes. Medicare's clinician data says Ralph Oiknine 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 Ralph Oiknine's NPI number?
- 1255365581. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ralph Oiknine works
Medicare's Facility Affiliation Data lists Ralph Oiknine at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · CCN 260179
Practice locations
Addresses where Ralph Oiknine is enrolled with Medicare (CMS data updated 2026-10-02).
- 222 S Woods Mill Rd, Suite 410nChesterfield, MO 63017
Group practices
Medicare enrollment lists Ralph Oiknine as a member of this group (CMS data updated 2026-10-02).
- Diabetes and Endocrinology Specialists Inc4 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Chesterfield
Clinicians with the same Medicare primary specialty in Chesterfield, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255365581 |
| 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