Quick answers
- Which hospitals does Sami Atassi work at?
- Medicare's official clinician data lists Sami Atassi at 3 hospitals: Franciscan Health Lafayette, Franciscan Health Michigan City and Indiana University Health Arnett Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sami Atassi see patients?
- Medicare's clinician data lists 1 practice location in Michigan City, IN. Call before your visit to confirm the address.
- What is Sami Atassi's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
- Does Sami Atassi accept Medicare assignment?
- Yes. Medicare's clinician data says Sami Atassi 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 Sami Atassi?
- (219) 861-5800, as listed in official Medicare / NPI Registry data.
- What is Sami Atassi's NPI number?
- 1801830534. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sami Atassi works
Medicare's Facility Affiliation Data lists Sami Atassi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Franciscan Health LafayetteLafayette, IN · Acute Care Hospital · CCN 150109
- Franciscan Health Michigan CityMichigan City, IN · Acute Care Hospital · CCN 150015
- Indiana University Health Arnett HospitalLafayette, IN · Acute Care Hospital · CCN 150173
Practice locations
Addresses where Sami Atassi is enrolled with Medicare (CMS data updated 2026-10-02).
- 8955 W 400Michigan City, IN 46360 (219) 861‑5800
Group practices
Medicare enrollment lists Sami Atassi as a member of this group (CMS data updated 2026-10-02).
- Franciscan Physician Network1,170 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Indiana
Clinicians with the same Medicare primary specialty in Indiana — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801830534 |
| 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