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

JAMES S KASTELMAN, MD

INTERNAL MEDICINE

Medical school: COLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS

Graduated: 1983

Offers telehealth

NPI: 1730266677

Practice Locations (2)

1800 HARRISON ST

OAKLAND, CA 946123463

15 GRUMMAN RD W, SUITE 1400

BETHPAGE, NY 117145029

Source: CMS National Downloadable File, September 2026.

JAMES KASTELMAN, MD | HealthCareAtlasUSA