Vivian Tsai, M.D.
Cardiovascular Disease Internal Medicine
Vivian Tsai is a Cardiovascular Disease Internal Medicine specialist based in Fremont, CA with over 23 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Vivian Tsai, M.D. has been part of the Fremont medical community since 2006 in group practice. She graduated from Johns Hopkins University School of Medicine in 2003 and has 23+ years of clinical experience. Among her Medicare patients, common conditions include hypertension, high cholesterol, and ischemic_heart (per CMS data).
Older · 2186dNPPES updated 2020-05-28 · verify NPI on CMS · Verify license at Medical Board of California
How Does This Doctor Compare?
Medicare Patients
1,090
Unique beneficiaries
High volumePrescription Recipients
359
Patients prescribed
Prescriptions Written
4,838
Total claims
Total Medicare drug cost: $834k
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Ischemic Heart Disease.
High blood pressure — a leading risk factor for heart disease and stroke
Elevated cholesterol or triglycerides that increase heart disease risk
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
Joint inflammation causing pain, swelling, and stiffness
A condition where the body cannot properly regulate blood sugar levels
An irregular, often rapid heartbeat that increases the risk of stroke
Gradual loss of kidney function over time, often linked to diabetes or hypertension
Weakened bones that are more prone to fractures, common in older adults
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2003
Johns Hopkins University School of Medicine
Board certified · May 27, 2020
Self-reported via NPPES
23 years in practice
Experienced
Cardiologists specialize in diagnosing and treating heart and blood vessel conditions including coronary artery disease, heart failure, arrhythmias, valve disorders, and hypertension. They perform diagnostic procedures such as echocardiograms, stress tests, and cardiac catheterization.
Taxonomy: 207RC0000X
Education & Training
Johns Hopkins University School of Medicine (Class of 2003)
Mailing address
325 Distel Cir, Los Altos, CA 94022-1408
Differs from practice location
Primary hospital affiliation: Critical Access Hospitals
CMS Certification Number: 191302
View hospital on Medicare Care CompareVirtual Cardiovascular Disease Care With Vivian Tsai
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Vivian Tsai for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Fremont required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Vivian Tsai
NPI records show Dr. Tsai as active with telehealth listed in Fremont, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (510) 490-1222.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Vivian Tsai
Practice Location
3200 Kearney Street, Fremont, CA 94538-2299
Mailing Address
325 Distel Cir, Los Altos, CA 94022-1408
This is a provider directory. Contact the office directly to schedule appointments.
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