Quick answers
- Which hospitals does William J. Helwig work at?
- Medicare's official clinician data lists William J. Helwig at 1 hospital: MH St Joseph Warren Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William J. Helwig see patients?
- Medicare's clinician data lists 1 practice location in Warren, OH. Call before your visit to confirm the address.
- What is William J. Helwig's specialty?
- Medicare lists Ophthalmology as the primary specialty, and also Internal Medicine.
- Does William J. Helwig accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Helwig 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 William J. Helwig?
- (330) 393-4000, as listed in official Medicare / NPI Registry data.
- What is William J. Helwig's NPI number?
- 1275533564. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William J. Helwig works
Medicare's Facility Affiliation Data lists William J. Helwig at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MH St Joseph Warren HospitalWarren, OH · Acute Care Hospital · CCN 360161
Practice locations
Addresses where William J. Helwig is enrolled with Medicare (CMS data updated 2026-10-02).
- 2660 E Market StWarren, OH 44483 (330) 393‑4000
Group practices
Medicare enrollment lists William J. Helwig as a member of this group (CMS data updated 2026-10-02).
- Brodell Medical Inc5 clinicians in the group
Specialties
- Ophthalmologyprimary
- Internal Medicinealso
Other ophthalmologists in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Toledo College Of Medicine |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275533564 |
| 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