Quick answers
- Which hospitals does John G. Bortz work at?
- Medicare's official clinician data lists John G. Bortz at 2 hospitals: St John's Riverside Hospital and Westchester Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John G. Bortz see patients?
- Medicare's clinician data lists 1 practice location in White Plains, NY. Call before your visit to confirm the address.
- What is John G. Bortz's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does John G. Bortz accept Medicare assignment?
- Yes. Medicare's clinician data says John G. Bortz 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 G. Bortz?
- (914) 686-0006, as listed in official Medicare / NPI Registry data.
- What is John G. Bortz's NPI number?
- 1942251095. 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 G. Bortz works
Medicare's Facility Affiliation Data lists John G. Bortz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St John's Riverside HospitalYonkers, NY · Acute Care Hospital · CCN 330208
- Westchester Medical CenterValhalla, NY · Acute Care Hospital · CCN 330234
Practice locations
Addresses where John G. Bortz is enrolled with Medicare (CMS data updated 2026-10-02).
- 811 N BroadwayWhite Plains, NY 10603 (914) 686‑0006
Specialties
- Ophthalmologyprimary
Other ophthalmologists in White Plains
Clinicians with the same Medicare primary specialty in White Plains, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 1979 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942251095 |
| 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