Quick answers
- Does Zeyad Sako accept Medicare assignment?
- Yes. Medicare's clinician data says Zeyad Sako accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Zeyad Sako see?
- In 2024, CMS data shows 140 Original Medicare patients and 381 services for Zeyad Sako. This counts Original Medicare only and measures volume, not quality.
- What is Zeyad Sako's NPI number?
- 1588016448. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Zeyad Sako, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 140 |
|---|---|
| Services billed to Medicare | 381 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)173 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)106 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)26 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)24 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)18 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol67%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)58%
- Arthritis46%
- Diabetes34%
- Ischemic heart disease34%
Hospitals where Zeyad Sako works
Medicare's Facility Affiliation Data lists Zeyad Sako at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Corewell Health Gerber HospitalFremont, MI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 231338
- Corewell Health Ludington HospitalLudington, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230110
- Corewell Health Reed City HospitalReed City, MI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 231323
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230038
- Spectrum Health United HospitalGreenville, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 230035
Practice locations
Addresses where Zeyad Sako is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 12; the Medicare profile lists all.
- 1 Atkinson DrLudington, MI 49431 (231) 843‑2591
- 100 Michigan Ave NEGrand Rapids, MI 49503
- 100 Michigan St NE Rm, 280 Corewell Health Medical Group WestGrand Rapids, MI 49503 (616) 267‑0115
- 145 Michigan St NE, 4100 Corewell Health Medical Group WestGrand Rapids, MI 49503 (616) 486‑6314
- 145 Michigan St NE, 5500 Corewell Health Medical Group WestGrand Rapids, MI 49503 (616) 267‑8540
Group practices
Medicare enrollment lists Zeyad Sako as a member of these groups (CMS data updated October 2, 2026).
- Spectrum Health Primary Care Partners2,294 clinicians in the group
- Memorial Medical Center of West Michigan62 clinicians in the group
- Newaygo County General Hospital Association59 clinicians in the group
- Reed City Hospital Corporation32 clinicians in the group
Specialties
- Medical Oncologyprimary
- Hematologyalso
- Internal Medicinealso
Other oncologists in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Other clinicians in Spectrum Health Primary Care Partners
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1588016448 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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