HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / NY

RYAN T O'HALLORAN, MD

EMERGENCY MEDICINE

Graduated: 2016

Offers telehealth

NPI: 1396107488

Practice Locations (2)

ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI

7901 BROADWAY

ELMHURST, NY 113731329

7183344952

EAST POST ROAD MEDICAL SERVICES PC

41 E POST RD

WHITE PLAINS, NY 106014607

9146810600

Source: CMS National Downloadable File, September 2026.

RYAN O'HALLORAN, MD | HealthCareAtlasUSA