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

CALVIN K LEI, MD

INTERNAL MEDICINE

Graduated: 1987

Offers telehealth

NPI: 1265432967

Practice Locations (2)

UNIVERSITY HEALTHCARE ALLIANCE

4725 1ST ST, SUITE 100

PLEASANTON, CA 945667366

9254627060

UNIVERSITY HEALTHCARE ALLIANCE

5568 GIBRALTAR DR

PLEASANTON, CA 945888544

8889241036

Source: CMS National Downloadable File, September 2026.

CALVIN LEI, MD | HealthCareAtlasUSA