Quick answers
- Does Gassan S. Shahin accept Medicare assignment?
- Yes. Medicare's clinician data says Gassan S. Shahin 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 Gassan S. Shahin see?
- In 2024, CMS data shows 939 Original Medicare patients and 1,449 services for Gassan S. Shahin. This counts Original Medicare only and measures volume, not quality.
- What is Gassan S. Shahin's NPI number?
- 1194719179. 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 Gassan S. Shahin, 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 | 939 |
|---|---|
| Services billed to Medicare | 1,449 |
| Different services or procedures | 69 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Ct scan head or brain without contrast (70450)205 services
- Mri scan of brain before and after contrast (70553)187 services
- Ct scan of blood vessels of neck with contrast (70498)75 services
- Ct scan of blood vessels of head with contrast (70496)74 services
- Mri scan of brain without contrast (70551)73 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%
- Arthritis59%
- Diabetes41%
- Anxiety37%
- Ischemic heart disease34%
Hospitals where Gassan S. Shahin works
Medicare's Facility Affiliation Data lists Gassan S. Shahin 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.
- Henry Ford Health HospitalDetroit, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230053
- Henry Ford Health West Bloomfield HospitalW Bloomfield, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230302
- Henry Ford Macomb HospitalClinton Township, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230047
- Karmanos Cancer CenterDetroit, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 230297
- McLaren Northern MichiganPetoskey, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230105
Practice locations
Addresses where Gassan S. Shahin is enrolled with Medicare (CMS data updated October 2, 2026).
- 2799 W Grand BlvdDetroit, MI 48202 (313) 916‑2600
- 31995 Northwestern HwyFarmington Hills, MI 48334 (800) 527‑6266
- 4100 John R StDetroit, MI 48201 (800) 527‑6266
- 4600 Investment DrTroy, MI 48098 (248) 267‑5000
Group practices
Medicare enrollment lists Gassan S. Shahin as a member of these groups (CMS data updated October 2, 2026).
- Henry Ford Health System2,570 clinicians in the group
- Barbara Ann Karmanos Cancer Institute57 clinicians in the group
- Troy Internal Medicine, PC42 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Vascular Surgeryalso
Other radiologists in Detroit
Clinicians with the same Medicare primary specialty in Detroit, MI — not a recommendation.
Other clinicians in Henry Ford Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194719179 |
| 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