Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Sami Atassi, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1801830534

Sami Atassi, MD practises Hematology/Oncology in Michigan City, Indiana. Qualified in 1985, 41 years ago. Practices with Franciscan Physician Network, a 1,171-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Iowa, Illinois and Indiana.

Years since qualifying
41
Licensed in
IA, IL, IN
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

8955 W 400 N
Michigan City, IN 46360-9330
Phone: (219) 861-5800
Fax: (219) 861-5543
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1400 Pin Oak Dr, Carterville, IL 62918-1600 — (618) 985-3333
  • 2600 S Michigan Ave Ste 308, Chicago, IL 60616-0049 — (312) 326-6666
  • 621 Memorial Dr Ste 100, South Bend, IN 46601-1063 — (574) 647-1100

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 01060203A (IN)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence 47734 (IA)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 036.091724 (IL)

Record details

NPI number1801830534
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 15, 2006
Last updated in NPPESJuly 9, 2024
Certification dateJuly 9, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Group practice Franciscan Physician Network — 1171 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients211
Services billed 405 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $31 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Franciscan Physician Network

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1171 clinicians in the practice; 12 are shown here.