1. Home
  2. Directory
  3. Michigan
  4. Grand Rapids
  5. Internal Medicine
  6. NPI Profile

ANTOINE SASSINE
NPI 1700403268
Internal Medicine in Grand Rapids, MI

Active since July 01, 2020PECOS Enrolled
300 LAFAYETTE AVE SE STE 3000, GRAND RAPIDS, MI 49503(616) 685-6919 Get Directions Write a Review

NPPES record last updated: May 26, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 26, 2026, Jun 19, 2023, Jul 1, 2020 (3 updates tracked since 2020).

About Antoine Sassine NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ANTOINE SASSINE (NPI 1700403268) is an individual internal medicine provider in Grand Rapids, Michigan, licensed in Michigan (4301518035) and active in the NPI registry since July 2020. He is enrolled in Medicare PECOS, maintains a secondary practice location in Grand Rapids, and is a graduate of Central Michigan College Of Medicine (2023).

NPPES Registry Identity

NPI1700403268
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameANTOINE SASSINE
Location Address300 LAFAYETTE AVE SE STE 3000Grand Rapids, MI 49503-4692
Mailing AddressPo Box 776974Chicago, IL 60677-6974 · (616) 685-1808 · Fax (312) 957-2939
Phone(616) 685-6919
Sole ProprietorYes
Medical School CMSCentral Michigan College Of MedicineGraduated 2023
Enumeration DateJuly 1, 2020
Last NPPES UpdateMay 26, 20263 updates tracked since enumeration
NPPES CertifiedMay 26, 2026
✔ NPI 1700403268 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301518035
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
300 LAFAYETTE AVE SE STE 3000, Grand Rapids, MI 49503
Open in Google Maps ↗

Secondary Practice Location 1

Location 1200 Jefferson Ave SEGrand Rapids, MI 49503-4502 · Phone (616) 685-5576

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Antoine Sassine is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4183194590
PECOS Enrollment IDI20260527002483
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

STEVEN JAMES STANTON MD
Internal Medicine
300 LAFAYETTE AVE SE STE 3000
GRAND RAPIDS, MI 49503
Kent County (616) 685-6919
ANUOLUWAPO OMOBOLANLE KOLAWOLE DO
Internal Medicine
300 LAFAYETTE AVE SE STE 3000
GRAND RAPIDS, MI 49503
Kent County (616) 685-6919
MADISON CHRISTINE JONES DO
Internal Medicine
300 LAFAYETTE AVE SE STE 3000
GRAND RAPIDS, MI 49503
Kent County (616) 685-6919
CATHERINE CARLE MD
Internal Medicine
300 LAFAYETTE AVE SE STE 3000
GRAND RAPIDS, MI 49503
Kent County (616) 685-6919
PATRICK DANIEL PAWLACZYK MD
Internal Medicine
300 LAFAYETTE AVE SE STE 3000
GRAND RAPIDS, MI 49503
Kent County (616) 685-6919
ZAIN KHURRAM SIDDIQUI DO
Internal Medicine
300 LAFAYETTE AVE SE STE 3000
GRAND RAPIDS, MI 49503
Kent County (616) 685-6919
MR. MICHAEL JAMES KOPKA I MD
Internal Medicine
300 LAFAYETTE AVE SE STE 3000
GRAND RAPIDS, MI 49503
Kent County (616) 685-6919
KEERTHI KIRAN SAJJA DO
Internal Medicine
300 LAFAYETTE AVE SE STE 3000
GRAND RAPIDS, MI 49503
Kent County (616) 685-4615

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Antoine Sassine's NPI number?

The NPI number for Antoine Sassine is 1700403268. It was assigned to this individual provider in the NPPES registry on July 1, 2020.

Where is Antoine Sassine located?

Antoine Sassine practices at 300 Lafayette Ave SE Ste 3000, Grand Rapids, MI 49503. The listed phone number is (616) 685-6919.

What is Antoine Sassine's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Antoine Sassine enrolled in Medicare?

Yes. Antoine Sassine is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Antoine Sassine was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.