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 / CA

JAY A KEYSTONE, MD

INTERNAL MEDICINE

Medical school: UNIVERSITY OF MICHIGAN MEDICAL SCHOOL

Graduated: 1970

Offers telehealth

NPI: 1306115001

Practice Locations (3)

1500 21ST ST

SACRAMENTO, CA 958115216

15 GRUMMAN RD W, SUITE 1400

Bethpage, NY 117145029

15 GRUMMAN RD W, SUITE 1400

BETHPAGE, NY 117145029

Source: CMS National Downloadable File, September 2026.

JAY KEYSTONE, MD | HealthCareAtlasUSA