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

TONYA WEI AN, MD

ORTHOPEDIC SURGERY

Medical school: WASHINGTON UNIVERSITY SCHOOL OF MEDICINE

Graduated: 2016

Offers telehealth

NPI: 1699292045

Practice Locations (3)

1189 WELCH RD RM, P388

Palo Alto, CA 943041905

500 PASTEUR DR, RM P388

PALO ALTO, CA 943041048

393 E WALNUT ST 3RD FL

PASADENA, CA 911880001

Source: CMS National Downloadable File, September 2026.

TONYA AN, MD | HealthCareAtlasUSA