Quick answers
- Which hospitals does Ina B. Ratner work at?
- Medicare's official clinician data lists Ina B. Ratner at 1 hospital: Maimonides Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ina B. Ratner see patients?
- Medicare's clinician data lists 2 practice locations, including Brooklyn, NY. Call before your visit to confirm the address.
- What is Ina B. Ratner's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Ina B. Ratner accept Medicare assignment?
- Yes. Medicare's clinician data says Ina B. Ratner 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 Ina B. Ratner?
- (718) 283-8773, as listed in official Medicare / NPI Registry data.
- What is Ina B. Ratner's NPI number?
- 1396729489. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ina B. Ratner works
Medicare's Facility Affiliation Data lists Ina B. Ratner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Maimonides Medical CenterBrooklyn, NY · Acute Care Hospital · CCN 330194
Practice locations
Addresses where Ina B. Ratner is enrolled with Medicare (CMS data updated 2026-10-02).
- 1083 McDonald AveBrooklyn, NY 11230 (718) 283‑8773
- 4422 9th AveBrooklyn, NY 11220 (718) 283‑8773
Group practices
Medicare enrollment lists Ina B. Ratner as a member of this group (CMS data updated 2026-10-02).
- Maimonides Faculty Practice Plan252 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Brooklyn
Clinicians with the same Medicare primary specialty in Brooklyn, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396729489 |
| 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