Am J Physiol Renal Physiol
Dr. Cynthia Chyn Tsui, MD
- Medicare services, 2024
- 1,988
- Medicare patients, 2024
- 138
- Part D claims, 2024
- 73
- Publications
- 10
- MIPS score, 2024
- 100
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-3173
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, California
Find Dr. Tsui'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. Cynthia Chyn Tsui is a nephrologist in Richmond, California
Dr. Tsui practices at Richmond Medical Center in Richmond, California.
Dr. Tsui's NPI, 1942476940, was assigned on April 30, 2008. Dr. Tsui graduated from Saint Louis University School Of Medicine in 2000. Dr. Tsui holds California license C138840.
- NPI
- 1942476940NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668525908
- NPI enumeration date
- April 30, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 307-3173
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Cynthia Chyn Tsui practices at Richmond Medical Center in Richmond, California
Dr. Tsui's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-3173.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-3173
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Cynthia Chyn Tsui is affiliated with 6 sites of care
Dr. Tsui's primary practice is Richmond Medical Center in Richmond, California. Dr. Tsui is also affiliated with Alta Bates Summit Medical Center | Alta Bates Campus. Dmand AI also links Dr. Tsui to 3 more hospitals and 1 physician office, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Cynthia Chyn Tsui's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tsui practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond Medical Center | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Cynthia Chyn Tsui is one of 1,401 nephrologists in California
Nephrology is Dr. Tsui's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Tsui is board certified in nephrology by the American Board of Internal Medicine. Dmand AI has Dr. Tsui's licenses on file in 2 states: California and Michigan.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Michigan license
Nephrologists near Dr. Tsui
Counts of nephrologists 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. Cynthia Chyn Tsui billed Medicare for 1,988 services in 2024
CMS data shows 1,988 Medicare services from Dr. Tsui across 6 procedure codes in 2024, for 138 Medicare patients. Medicare paid $150,916 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Tsui's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2372024: 1,91755%
- Tests and treatments
- 2023: 1012024: 7130%
Dr. Tsui compared with the California median for nephrologists, 2024
- Dr. Tsui
- California median
- Medicare services
- 1,988vs 1,08483% above
- Medicare patients
- 138vs 30755% below
- Part D claims
- 31vs 95597% below
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Tsui'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.
Need commercial claims for Dr. Tsui?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tsui and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Cynthia Chyn Tsui treated 138 Medicare patients in 2024, average age 76
CMS counts 138 Medicare patients who saw Dr. Tsui in 2024. The largest group is 75 to 84, with 51 patients. 75% of them have chronic kidney disease, and 75% have diabetes. 64% are also on Medicaid. Their average risk score is 5.47, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Tsui's median patient age at 70, with 47% women.
Dr. Tsui's Medicare patients by age, 2024
Dr. Tsui's Medicare patients by sex, 2024
- Women7051%
- Men6849%
Chronic conditions among Dr. Tsui's Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Heart failure66%
- Ischemic heart disease61%
- Atrial fibrillation45%
- Arthritis43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tsui's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Cynthia Chyn Tsui wrote 73 Medicare Part D claims in 2024
In 2024, Dr. Tsui wrote 73 Medicare Part D claims. 55% of them were for generic drugs. CMS names the drug for 31 of them, across 1 drug with 11 or more claims each, at $6,113 in total drug cost. In 2023, CMS named 71 claims across 1 drug.
Dr. Tsui's Part D claims by kind of drug, 2024
- Generic40 claims55%
- Brand-name33 claims45%
Dr. Tsui'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: 712024: 3156%
Drugs named by CMS: 1 in 2024, 1 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. Cynthia Chyn Tsui scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Tsui for performance year 2024, reported as part of a group. Dr. Tsui accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Tsui's MIPS scores, performance year 2024
- 100of 100Final score
- 80.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 87of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Cynthia Chyn Tsui has 10 publications on record
Dmand AI links 10 papers to Dr. Tsui, published from 2007 to 2015. 2015 was the busiest year, with 2. The most frequent topics are Cells, Cultured, Neurons and Podocytes. Dr. Tsui has published most often in J Neurosci. Dr. Tsui's most frequent co-author is Sarah Jane Hein, FNP-BC.
Dr. Tsui's papers by year, 2007 to 2015
Topics Dr. Tsui writes about most
- Cells, Cultured
- Neurons
- Podocytes
- Proto-Oncogene Proteins c-ret
- Signal Transduction
- Superior Cervical Ganglion
- Cell Survival
- Cytoskeletal Proteins
Dr. Tsui's most frequent co-authors
Recent publications by Dr. Tsui
See who Dr. Tsui researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tsui works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Cynthia Chyn Tsui received $407 in industry payments from 2016 to 2024
CMS Open Payments shows 8 general payments to Dr. Tsui from 5 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Fresenius USA Marketing, Inc. paid the most, $271.
General payments to Dr. Tsui by program year, 2016 to 2024
Companies that paid Dr. Tsui the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Cynthia Chyn Tsui graduated from Saint Louis University School Of Medicine
Dr. Tsui graduated from Saint Louis University School Of Medicine in 2000. Dr. Tsui is a member of ASN.
- Medical school
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Cynthia Chyn Tsui accepts plans from 8 insurance carriers
Dr. Tsui is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Health Alliance Plan
- Regence Health Plans
- CMS Medicare
Plan types Dr. Tsui accepts, by number of carriers
- PPO7
- Medicare6
- POS3
- EPO2
- HMO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Cynthia Chyn Tsui'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Clinician Public Reporting: Overall MIPS Performance (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) |
| 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. Cynthia Chyn Tsui
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. Cynthia Chyn Tsui's NPI number?
Dr. Cynthia Chyn Tsui's NPI number is 1942476940. It was assigned on April 30, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Cynthia Chyn Tsui?
Dr. Cynthia Chyn Tsui is a nephrologist in Richmond, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Cynthia Chyn Tsui practice?
Dr. Tsui practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Tsui's primary practice is Richmond Medical Center in Richmond, California. Dmand AI also links Dr. Tsui to 3 hospitals and 1 physician office.
What is Dr. Cynthia Chyn Tsui's office phone number?
The practice phone on file for Dr. Tsui is (510) 307-3173.
What is Dr. Cynthia Chyn Tsui's medical license number?
Dr. Tsui holds California license C138840, one of the licenses on file in 2 states.
Which states has Dr. Cynthia Chyn Tsui been licensed in?
Dmand AI has state licenses on file for Dr. Tsui in California (2015 to 2027) and Michigan (2008 to 2019).
Which hospitals is Dr. Cynthia Chyn Tsui affiliated with?
Dr. Tsui is affiliated with Alta Bates Summit Medical Center | Alta Bates Campus. Dmand AI links Dr. Tsui to 3 more hospitals.
Does Dr. Cynthia Chyn Tsui accept Medicare?
Yes. CMS data shows Dr. Tsui billed Medicare for 1,988 services in 2024, and Dr. Tsui accepts Medicare assignment.
What is Dr. Cynthia Chyn Tsui's MIPS score?
Dr. Tsui's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Cynthia Chyn Tsui see?
CMS counts 138 Medicare patients who saw Dr. Tsui in 2024, with an average age of 76.
Show 9 more questionsShow fewer questions
Is Dr. Cynthia Chyn Tsui board certified?
Yes. Dr. Tsui is board certified in nephrology by the American Board of Internal Medicine.
What services does Dr. Cynthia Chyn Tsui bill to Medicare?
In 2024, Dr. Tsui's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99231).
Where did Dr. Cynthia Chyn Tsui go to medical school?
Dr. Tsui graduated from Saint Louis University School Of Medicine in 2000.
What drugs does Dr. Cynthia Chyn Tsui prescribe most?
In 2024 Medicare Part D data, Dr. Tsui's most prescribed drugs by claims were Prosol.
Has Dr. Cynthia Chyn Tsui received payments from drug or device companies?
CMS Open Payments shows $407 in general payments to Dr. Tsui from 5 companies from 2016 to 2024. The largest total came from Fresenius USA Marketing, Inc.
How long has Dr. Cynthia Chyn Tsui been practicing?
Dr. Tsui graduated from medical school in 2000, 26 years ago.
Does Dr. Cynthia Chyn Tsui do research?
Dmand AI links 10 publications to Dr. Tsui, published from 2007 to 2015.
Who does Dr. Cynthia Chyn Tsui publish with?
Dr. Tsui's most frequent co-authors are Sarah Jane Hein, FNP-BC (1 shared paper).
What insurance does Dr. Cynthia Chyn Tsui accept?
Dr. Tsui is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
Selling to nephrology practices?
See nephrologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card