JACC Heart Fail
Dr. Vivian W. Tsai, MD
- Medicare services, 2024
- 2,813
- Medicare patients, 2024
- 1,149
- Part D claims, 2024
- 5,010
- Publications
- 9
- Hospital affiliations
- 1
- Practice address
- 3200 Kearney Street, Fremont, CA 94538
- Practice phone
- Call (510) 498-2812
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Palo Alto Medical Foundation-Fremont Center
Mammography / Breast Imaging Center · Fremont, California
Find Dr. Tsai's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Vivian W. Tsai is a cardiologist in Fremont, California
Dr. Tsai practices at Palo Alto Medical Foundation-Fremont Center in Fremont, California.
Dr. Tsai's NPI, 1770534182, was assigned on May 12, 2006. Dr. Tsai graduated from The Johns Hopkins University School of Medicine in 2003. Dr. Tsai holds California license A88245.
- NPI
- 1770534182NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315945540
- NPI enumeration date
- May 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 498-2812
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Vivian W. Tsai practices at Palo Alto Medical Foundation-Fremont Center in Fremont, California
Dr. Tsai's primary practice is Palo Alto Medical Foundation-Fremont Center, at 3200 Kearney Street, Fremont, CA 94538. The practice phone is (510) 498-2812.
- Palo Alto Medical Foundation-Fremont Center3200 Kearney Street, Fremont, CA 94538Phone(510) 498-2812
Source: Dmand AI Affiliation Data
Dr. Vivian W. Tsai is affiliated with 3 sites of care and 1 medical group
Dr. Tsai's primary practice is Palo Alto Medical Foundation-Fremont Center in Fremont, California. Dr. Tsai is also affiliated with Washington Health. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. Tsai to 1 more group practice or clinic, named with a free account. Dr. Tsai's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Vivian W. Tsai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tsai practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Palo Alto Medical Foundation-Fremont Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Vivian W. Tsai is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Tsai's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Tsai is board certified in cardiovascular disease by the American Board of Internal Medicine. Dr. Tsai is licensed in California.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
Clinical focus
Dmand AI lists aneurysm, aortic atherosclerois, atrial fibrillation and flutter, cardiomyopathy, cerebrovascular disease, chronic hypertension, congestive heart failure and coronary artery disease among the conditions Dr. Tsai treats.
Cardiologists near Dr. Tsai
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Vivian W. Tsai billed Medicare for 2,813 services in 2024
CMS data shows 2,813 Medicare services from Dr. Tsai across 24 procedure codes in 2024, for 1,149 Medicare patients. Medicare paid $233,656 for them.
Dr. Tsai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1,2472024: 1,3387%
- Office and hospital visits
- 2023: 9572024: 9283%
- Other services
- 2023: 1212024: 414242%
- Drugs given in the office
- 2023: 812024: 6816%
- Imaging
- 2023: 692024: 656%
Where Dr. Tsai's Medicare services took place, 2024
- In an office2,66295%
- In a facility1515%
Dr. Tsai compared with the California median for cardiologists, 2024
- Dr. Tsai
- California median
- Medicare services
- 2,813vs 1,56080% above
- Medicare patients
- 1,149vs 64478% above
- Part D claims
- 4,730vs 1,4103.4 times
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Tsai's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tsai and other cardiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Vivian W. Tsai treated 1,149 Medicare patients in 2024, average age 77
CMS counts 1,149 Medicare patients who saw Dr. Tsai in 2024. The largest group is 75 to 84, with 459 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.20, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tsai's median patient age at 59, with 49% women.
Dr. Tsai's Medicare patients by age, 2024
Dr. Tsai's Medicare patients by sex, 2024
- Women63655%
- Men51345%
Chronic conditions among Dr. Tsai's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease44%
- Arthritis39%
- Diabetes35%
- Atrial fibrillation28%
- Chronic kidney disease28%
- Osteoporosis21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tsai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Vivian W. Tsai wrote 5,010 Medicare Part D claims in 2024
In 2024, Dr. Tsai wrote 5,010 Medicare Part D claims for 379 patients. 87% of them were for generic drugs. CMS names the drug for 4,730 of them, across 43 drugs with 11 or more claims each, at $852,433 in total drug cost. In 2023, CMS named 4,601 claims across 46 drugs.
Dr. Tsai's Part D claims by kind of drug, 2024
- Generic4,355 claims87%
- Brand-name655 claims13%
Dr. Tsai's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,6012024: 4,7303%
Drugs named by CMS: 43 in 2024, 46 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Vivian W. Tsai offers telehealth to Medicare patients
Dr. Tsai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tsai as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Vivian W. Tsai has 9 publications on record
Dmand AI links 9 papers to Dr. Tsai, published from 2007 to 2015. 2015 was the busiest year, with 3. The most frequent topics are Defibrillators, Implantable, Heart Failure and Comorbidity. Dr. Tsai has published most often in Circ Cardiovasc Qual Outcomes. Dr. Tsai's most frequent co-authors are Paul Allen Heidenreich, MD, Mary K. Goldstein, MD and Henry H. Hsia, MD.
Dr. Tsai's papers by year, 2007 to 2015
Topics Dr. Tsai writes about most
- Defibrillators, Implantable
- Heart Failure
- Comorbidity
- Death, Sudden, Cardiac
- Electric Countershock
- Heart Arrest
- Primary Prevention
- Ventricular Dysfunction, Left
Dr. Tsai's most frequent co-authors
- Paul Allen Heidenreich, MD6 shared papers
- Mary K. Goldstein, MD3 shared papers
- Henry H. Hsia, MD3 shared papers
Recent publications by Dr. Tsai
Circ Cardiovasc Qual Outcomes
Circ Heart Fail
See who Dr. Tsai researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tsai works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Vivian W. Tsai received $91 in industry payments from 2017 to 2025
CMS Open Payments shows 3 general payments to Dr. Tsai from 3 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Cleerly, Inc. paid the most, $48.
General payments to Dr. Tsai by program year, 2017 to 2025
Companies that paid Dr. Tsai the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Vivian W. Tsai has 1 award and honors on record
Dmand AI lists 1 award for Dr. Tsai, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Tsai
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Vivian W. Tsai graduated from The Johns Hopkins University School of Medicine
Dr. Tsai graduated from The Johns Hopkins University School of Medicine in 2003. Dr. Tsai is a member of ACC.
- Medical school
- Board certified in cardiovascular disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Vivian W. Tsai accepts plans from 12 insurance carriers
Dr. Tsai is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- +4 more carriersWith a free account
Plan types Dr. Tsai accepts, by number of carriers
- PPO8
- HMO6
- Medicare6
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Vivian W. Tsai's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Vivian W. Tsai
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Vivian W. Tsai's NPI number?
Dr. Vivian W. Tsai's NPI number is 1770534182. It was assigned on May 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Vivian W. Tsai?
Dr. Vivian W. Tsai is a cardiologist in Fremont, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Vivian W. Tsai practice?
Dr. Tsai practices at 3200 Kearney Street, Fremont, CA 94538. Dr. Tsai's primary practice is Palo Alto Medical Foundation-Fremont Center in Fremont, California. Dmand AI also links Dr. Tsai to 1 group practice or clinic.
What is Dr. Vivian W. Tsai's office phone number?
The practice phone on file for Dr. Tsai is (510) 498-2812.
What is Dr. Vivian W. Tsai's medical license number?
Dr. Tsai holds California license A88245.
Which hospitals is Dr. Vivian W. Tsai affiliated with?
Dr. Tsai is affiliated with Washington Health.
What medical group is Dr. Vivian W. Tsai part of?
Dr. Tsai is linked to Palo Alto Foundation Medical Group.
Does Dr. Vivian W. Tsai accept Medicare?
Yes. CMS data shows Dr. Tsai billed Medicare for 2,813 services in 2024, and Dr. Tsai accepts Medicare assignment.
Does Dr. Vivian W. Tsai offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tsai as offering telehealth services.
How many Medicare patients does Dr. Vivian W. Tsai see?
CMS counts 1,149 Medicare patients who saw Dr. Tsai in 2024, with an average age of 77.
Show 9 more questionsShow fewer questions
Is Dr. Vivian W. Tsai board certified?
Yes. Dr. Tsai is board certified in cardiovascular disease by the American Board of Internal Medicine.
What services does Dr. Vivian W. Tsai bill to Medicare?
In 2024, Dr. Tsai's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93000) and office visit, established patient (99215).
Where did Dr. Vivian W. Tsai go to medical school?
Dr. Tsai graduated from The Johns Hopkins University School of Medicine in 2003.
What drugs does Dr. Vivian W. Tsai prescribe most?
In 2024 Medicare Part D data, Dr. Tsai's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Amlodipine Besylate.
Has Dr. Vivian W. Tsai received payments from drug or device companies?
CMS Open Payments shows $91 in general payments to Dr. Tsai from 3 companies from 2017 to 2025. The largest total came from Cleerly, Inc.
How long has Dr. Vivian W. Tsai been practicing?
Dr. Tsai graduated from medical school in 2003, 23 years ago.
Does Dr. Vivian W. Tsai do research?
Dmand AI links 9 publications to Dr. Tsai, published from 2007 to 2015.
Who does Dr. Vivian W. Tsai publish with?
Dr. Tsai's most frequent co-authors are Paul Allen Heidenreich, MD (6 shared papers), Mary K. Goldstein, MD (3 shared papers) and Henry H. Hsia, MD (3 shared papers).
What insurance does Dr. Vivian W. Tsai accept?
Dr. Tsai is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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