Quick answers
- Which hospitals does Benjamin J. Ernst work at?
- Medicare's official clinician data lists Benjamin J. Ernst at 2 hospitals: St Vincent Hospital and Thedacare Regional Medical Center - Neenah. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Benjamin J. Ernst see patients?
- Medicare's clinician data lists 4 practice locations, including Appleton, WI, Green Bay, WI and Oshkosh, WI. Call before your visit to confirm the address.
- What is Benjamin J. Ernst's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Benjamin J. Ernst accept Medicare assignment?
- Yes. Medicare's clinician data says Benjamin J. Ernst 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 Benjamin J. Ernst?
- (920) 751-8666, as listed in official Medicare / NPI Registry data.
- What is Benjamin J. Ernst's NPI number?
- 1518162247. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Benjamin J. Ernst works
Medicare's Facility Affiliation Data lists Benjamin J. Ernst at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Vincent HospitalGreen Bay, WI · Acute Care Hospital · CCN 520075
- Thedacare Regional Medical Center - NeenahNeenah, WI · Acute Care Hospital · CCN 520045
Practice locations
Addresses where Benjamin J. Ernst is enrolled with Medicare (CMS data updated 2026-10-02).
- 442 N Westhill Blvd, Suite AAppleton, WI 54914 (920) 751‑8666
- 480 Pilgrim Way, Suite 1305Green Bay, WI 54304 (920) 592‑0111
- 515 S Washburn St, Suite 101aOshkosh, WI 54904 (920) 232‑8060
- 723 Park Ridge Ln, Suite 10North Fond Du Lac, WI 54937 (920) 322‑8688
Group practices
Medicare enrollment lists Benjamin J. Ernst as a member of this group (CMS data updated 2026-10-02).
- Northeast Wisconsin Retina Associates SC7 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Appleton
Clinicians with the same Medicare primary specialty in Appleton, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518162247 |
| 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