Dr. Ruby Chien , MD
Internal Medicine • Orange, CA
Professional Overview & Biography Verified Profile Summary
Dr. Ruby Chien, MD is a registered healthcare professional specializing in Internal Medicine in Orange, CA. Practice services are available at 101 THE CITY DR S STE 400 under active NPI credentials.
Practice Location & Contact Primary Location
101 The City Dr S Ste 400
Orange, CA 928683201
Specialty Benchmarks & Practice Insights
Comparative analytics for Internal Medicine in Orange, CA
Practicing in Orange, CA (18502 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
CMS Verified: 2026-03-23NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Internal Medicine
Student in an Organized Health Care Education/Training Program
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Student in an Organized Health Care Education/Training Program
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 101 THE CITY DR S, ORANGE, CA 928683201 (Tel: 7144567890)
Internal Medicine (License #A201192 in CA)
NPI status registered as active in NPPES database
Registered at 101 THE CITY DR S STE 400, ORANGE, CA 928683201 (Tel: 7144565691)
Registered at 4871 GRIMSBY DR, SAN JOSE, CA 951302040 (Tel: 4087262933)
Recorded as RUBY CHIEN, MD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
101 The City Dr S
Orange, CA 928683201
Phone: 7144567890
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.