Quick answers
- Which hospitals does John H. Iljas work at?
- Medicare's official clinician data lists John H. Iljas at 5 hospitals: Ascension Providence Hospital, Southfield and Novi…, Huron Valley-Sinai Hospital, Sinai-Grace Hospital, St Joe Mercy Hospital System Livonia and Trinity Health Oakland Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John H. Iljas see patients?
- Medicare's clinician data lists 2 practice locations, including Livonia, MI. Call before your visit to confirm the address.
- What is John H. Iljas's specialty?
- Medicare lists Vascular Surgery as the primary specialty.
- Does John H. Iljas accept Medicare assignment?
- Yes. Medicare's clinician data says John H. Iljas accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John H. Iljas?
- (734) 462-8401, as listed in official Medicare / NPI Registry data.
- What is John H. Iljas's NPI number?
- 1669440079. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John H. Iljas works
Medicare's Facility Affiliation Data lists John H. Iljas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Providence Hospital, Southfield and Novi…Southfield, MI · Acute Care Hospital · CCN 230019
- Huron Valley-Sinai HospitalCommerce Township, MI · Acute Care Hospital · CCN 230277
- Sinai-Grace HospitalDetroit, MI · Acute Care Hospital · CCN 230024
- St Joe Mercy Hospital System LivoniaLivonia, MI · Acute Care Hospital · CCN 230002
- Trinity Health Oakland HospitalPontiac, MI · Acute Care Hospital · CCN 230029
Practice locations
Addresses where John H. Iljas is enrolled with Medicare (CMS data updated 2026-10-02).
- 15370 Levan Rd, Suite 1Livonia, MI 48154 (734) 462‑8401
- 36616 Plymouth RdLivonia, MI 48150 (734) 462‑8401
Group practices
Medicare enrollment lists John H. Iljas as a member of this group (CMS data updated 2026-10-02).
- Vellore R Ramakrishnan M.D., P.C.3 clinicians in the group
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669440079 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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