Quick answers
- Which hospitals does Stanley J. Tretter work at?
- Medicare's official clinician data lists Stanley J. Tretter at 1 hospital: Memorial Hospital and Health Care Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stanley J. Tretter see patients?
- Medicare's clinician data lists 2 practice locations, including Holland, IN and Jasper, IN. Call before your visit to confirm the address.
- What is Stanley J. Tretter's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Stanley J. Tretter accept Medicare assignment?
- Yes. Medicare's clinician data says Stanley J. Tretter 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 Stanley J. Tretter?
- (812) 536-3943, as listed in official Medicare / NPI Registry data.
- What is Stanley J. Tretter's NPI number?
- 1235221599. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stanley J. Tretter works
Medicare's Facility Affiliation Data lists Stanley J. Tretter at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Hospital and Health Care CenterJasper, IN · Acute Care Hospital · CCN 150115
Practice locations
Addresses where Stanley J. Tretter is enrolled with Medicare (CMS data updated 2026-10-02).
- 303 N Meridian St, Holland Family MedicineHolland, IN 47541 (812) 536‑3943
- 966 Bartley StJasper, IN 47546 (812) 996‑7810
Group practices
Medicare enrollment lists Stanley J. Tretter as a member of these groups (CMS data updated 2026-10-02).
- Deaconess Clinic Inc413 clinicians in the group
- Deaconess Memorial Medical Center Inc144 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Holland
Clinicians with the same Medicare primary specialty in Holland, IN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235221599 |
| 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