Quick answers
- Does Ghassan Naisan accept Medicare assignment?
- Yes. Medicare's clinician data says Ghassan Naisan 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 Ghassan Naisan see?
- In 2024, CMS data shows 58 Original Medicare patients and 199 services for Ghassan Naisan. This counts Original Medicare only and measures volume, not quality.
- What is Ghassan Naisan's NPI number?
- 1104494236. 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 Ghassan Naisan, 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 | 58 |
|---|---|
| Services billed to Medicare | 199 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)137 services
- Hospital discharge day management, more than 30 minutes (99239)24 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)17 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 cholesterol75%
- Arthritis55%
- Ischemic heart disease55%
- Diabetes52%
- Depression47%
Hospitals where Ghassan Naisan works
Medicare's Facility Affiliation Data lists Ghassan Naisan 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.
- Ascension Genesys HospitalGrand Blanc, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230197
- MyMichigan Medical Center ClareClare, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 230180
- MyMichigan Medical Center GladwinGladwin, MI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 231325
- MyMichigan Medical Center MidlandMidland, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 230222
- Saint Mary's Standish Community HospitalStandish, MI · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 231305
Practice locations
Addresses where Ghassan Naisan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Genesys PkwyGrand Blanc, MI 48439 (810) 606‑5000
- 1215 E Michigan AveLansing, MI 48912 (517) 364‑2097
- 4000 Wellness DrMidland, MI 48670 (989) 839‑1644
- 580 W College Ave, Up Health SystemMarquette, MI 49855 (906) 228‑9440
Group practices
Medicare enrollment lists Ghassan Naisan as a member of these groups (CMS data updated October 2, 2026).
- Edward W Sparrow Hospital Association730 clinicians in the group
- MyMichigan Medical Group174 clinicians in the group
- Sound Inpatient Physicians-Michigan PLLC171 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Grand Blanc
Clinicians with the same Medicare primary specialty in Grand Blanc, MI — not a recommendation.
Other clinicians in Edward W Sparrow Hospital Association
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | West Virginia School Of Osteopathic Medicine |
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104494236 |
| 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