Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Ina Beth Ratner

Individual provider Internal Medicine Physician · NPI 1396729489

Dr. Ina Beth Ratner practises Internal Medicine in Brooklyn, New York. Graduated from University of Massachusetts Medical School in 1986, 40 years ago. Practices with Maimonides Faculty Practice Plan, a 246-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
40
Trained at
University of Massachusetts Medical School
Licensed in
NY
In the registry since
2005
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Practice location Address checks out

923 48th St
Brooklyn, NY 11219-2919 Not confirmed with CMS for 12 years — call before visiting
Phone: (718) 283-7523
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 222738 (NY)

Record details

NPI number1396729489
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedDecember 1, 2005
Last updated in NPPESFebruary 28, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 1986 (40 years in practice)
Group practice Maimonides Faculty Practice Plan — 246 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients182
Services billed 354 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Maimonides Faculty Practice Plan

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 246 clinicians in the practice; 12 are shown here.

Other providers in Brooklyn