Quick answers
- Where does Billy N. Geris see patients?
- Medicare's clinician data lists 1 practice location in Staten Island, NY. Call before your visit to confirm the address.
- What is Billy N. Geris's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Addiction Medicine.
- Does Billy N. Geris accept Medicare assignment?
- Yes. Medicare's clinician data says Billy N. Geris 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 Billy N. Geris?
- (718) 227-3810, as listed in official Medicare / NPI Registry data.
- What is Billy N. Geris's NPI number?
- 1356301808. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Billy N. Geris is enrolled with Medicare (CMS data updated 2026-10-02).
- 4335 Hylan BlvdStaten Island, NY 10312 (718) 227‑3810
Specialties
- Internal Medicineprimary
- Addiction Medicinealso
Other internal medicine doctors in Staten Island
Clinicians with the same Medicare primary specialty in Staten Island, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356301808 |
| 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
- 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