4.3
18 Ratings with 4 written Reviews
Summary
Dr. William Tsai is a family medicine physician who brings three decades of experience to his practice in Upland, California. He earned his medical degree from Western University of Health Sciences College of Osteopathic Medicine of the Pacific, where he developed his foundation in osteopathic medicine's whole-person approach to healthcare. Dr. Tsai provides comprehensive family care for patients of all ages, from pediatric to adult populations. He is fluent in both English and Spanish, allowing him to serve diverse communities in the region.
Dr. Tsai practices at San Antonio Regional Hospital and maintains his office in Upland. His clinical focus includes managing high blood pressure conditions, from routine hypertension to more complex cases requiring specialized attention. He also provides essential preventive care services such as depression screenings and health risk assessments to help patients maintain optimal wellness. Patients consistently rate Dr. Tsai highly for his care, …giving him an average rating of 4.3 out of 5 stars.
Read More Read less Dr. Tsai practices at San Antonio Regional Hospital and maintains his office in Upland. His clinical focus includes managing high blood pressure conditions, from routine hypertension to more complex cases requiring specialized attention. He also provides essential preventive care services such as depression screenings and health risk assessments to help patients maintain optimal wellness. Patients consistently rate Dr. Tsai highly for his care, …giving him an average rating of 4.3 out of 5 stars.
Overview based on verified provider data
Quick Facts
- 30 years of experience
- 75 insurance plans accepted
- speaks English, Spanish
- Western Univ Health Sci College Of Osteopathic Medicine Of The Pacific
- 4 written reviews
- 1 specialty
- 7 areas of expertise
- 2 office locations
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Dr. William T Tsai has 2 locationsTsai William T Office
510 N 13th Ave Ste 101Upland, CA 91786 Tel: (909) 985-8838
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  |  |  |
| Dr. William T Tsai | Dawn Vollmann, PA-C | Dr. Samantha Von Ins, MD | Michael Benavidez, DO |
| Family Medicine | Family Medicine | Family Medicine | Family Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 30 Years of Experience | 16 Years of Experience | 34 Years of Experience | |
| No Virtual Visit Option | No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option |
| Speaks English, Spanish | Speaks English | Speaks Spanish, Vietnamese | Speaks English, Spanish |
| Upland , CA | Huntington Beach , CA | Placentia , CA | Upland , CA |
| Med School: Western Univ Health Sci College Of Osteopathic Medicine Of The Pacific | Med School: University Of California Irvine College Of Medicine | Med School: Western University of Health Sciences | |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. William T Tsai
Medical Specialties
Dr. William T Tsai has the following specialty
Specialty Expertise
Dr. William T Tsai has the following 7 areas of expertise
Certifications, License, & Education
30 Years Experience
Dr. William T Tsai holds an active medical license in the state of California.
Medical License
Doctor Of Osteopathy with an active medical license in the state of California that expired in 2026.
Education & Training
Medical School
Graduated from Western Univ Health Sci College Of Osteopathic Medicine Of The Pacific in 1996.
NPI Number
Dr. Tsai's NPI number is 1285620443.
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Frequently Asked Questions
- Does Dr. William Tsai accept my insurance?
- You can see the insurance plans that Dr. William Tsai accepts on their Vitals profile.
- What languages does Dr. William Tsai speak?
- Dr. William Tsai speaks English and Spanish.
- Does Dr. William Tsai accept virtual/telehealth appointments?
- Dr. William Tsai has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Where is Dr. William Tsai's office located?
- Dr. William Tsai's office is located at 510 N 13th Ave Ste 101, Upland, CA, 91786.
- How can I make an appointment with Dr. William Tsai?
- You can find contact information for Dr. William Tsai here on Vitals.
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