Dr. Wei-Tzuoh Chen, MD
- Medicare services, 2024
- 243
- Medicare patients, 2024
- 66
- Part D claims, 2024
- 421
- Publications
- 1
- Industry payments
- $1,072
- Practice address
- 503 S Watson St, Visalia, CA 93277
- Practice phone
- Call (559) 934-0690
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Coalinga Dialysis
Visalia, California
Find Dr. Chen'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. Wei-Tzuoh Chen is an internist in Visalia, California
Dr. Chen practices at Coalinga Dialysis in Visalia, California.
Dr. Chen's NPI, 1184732398, was assigned on August 28, 2006. Dr. Chen graduated from Taipei Medical University in 1969. Dr. Chen holds California license A34640.
- NPI
- 1184732398NPI Registry (opens in a new tab)
- NPI enumeration date
- August 28, 2006
- NPI status
- Active
- Practice phone
- (559) 934-0690
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Wei-Tzuoh Chen practices at Coalinga Dialysis in Visalia, California
Dr. Chen's primary practice is Coalinga Dialysis, at 503 S Watson St, Visalia, CA 93277 in Tulare County. The practice phone is (559) 934-0690.
- Coalinga Dialysis503 S Watson St, Visalia, CA 93277 · Tulare CountyPhone(559) 934-0690
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Wei-Tzuoh Chen is affiliated with 1 site of care and 1 medical group
Dr. Chen's primary practice is Coalinga Dialysis in Visalia, California. The medical group on file is The Nephrology Group, Inc.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Wei-Tzuoh Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Coalinga Dialysis | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Wei-Tzuoh Chen is one of 16,751 internists in California
Internal medicine is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Chen's licenses on file in 3 states: California, Illinois and Ohio.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Illinois license
- Ohio license
Clinical focus
Dmand AI lists chronic kidney disease and fluid and electrolyte imbalances among the conditions Dr. Chen treats.
Internists near Dr. Chen
Counts of internists 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. Wei-Tzuoh Chen billed Medicare for 243 services in 2024
CMS data shows 243 Medicare services from Dr. Chen across 10 procedure codes in 2024, for 66 Medicare patients. Medicare paid $41,911 for them. Every service was in an office.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 6102024: 15575%
- Lab and pathology
- 2023: 2,2522024: 7797%
- Surgery
- 2023: 3422024: 1197%
- Drugs given in the office
- 2023: 2,9002024: 0100%
- Office and hospital visits
- 2023: 3992024: 0100%
Dr. Chen compared with the California median for internists, 2024
- Dr. Chen
- California median
- Medicare services
- 243vs 36133% below
- Medicare patients
- 66vs 15156% below
- Part D claims
- 289vs 42131% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Chen'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. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Wei-Tzuoh Chen treated 66 Medicare patients in 2024, average age 65
CMS counts 66 Medicare patients who saw Dr. Chen in 2024. The largest group is under 65, with 28 patients. 75% of them have chronic kidney disease, and 75% have diabetes. 56% are also on Medicaid. Their average risk score is 8.32, 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. Chen's median patient age at 65, with 42% women.
Dr. Chen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chen's Medicare patients by sex, 2024
- Women3147%
- Men3553%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Heart failure55%
- Ischemic heart disease50%
- Depression38%
- Mood disorders38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women42%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Wei-Tzuoh Chen wrote 421 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 421 Medicare Part D claims for 71 patients. 58% of them were for generic drugs. CMS names the drug for 289 of them, across 7 drugs with 11 or more claims each, at $36,405 in total drug cost. In 2023, CMS named 714 claims across 21 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic243 claims58%
- Brand-name and other178 claims42%
Dr. Chen'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: 7142024: 28960%
Drugs named by CMS: 7 in 2024, 21 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
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Dr. Wei-Tzuoh Chen has 1 publication on record
Dmand AI links 1 paper to Dr. Chen.
Recent publications by Dr. Chen
See who Dr. Chen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chen works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Wei-Tzuoh Chen received $1,072 in industry payments from 2016 to 2022
CMS Open Payments shows 50 general payments to Dr. Chen from 21 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Relypsa, Inc. paid the most, $176.
General payments to Dr. Chen by program year, 2016 to 2022
Companies that paid Dr. Chen the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Wei-Tzuoh Chen has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chen, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Chen
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Wei-Tzuoh Chen graduated from Taipei Medical University
Dr. Chen graduated from Taipei Medical University in 1969.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Wei-Tzuoh Chen accepts plans from 8 insurance carriers
Dr. Chen is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Humana
- Molina
Plan types Dr. Chen accepts, by number of carriers
- PPO6
- Medicare5
- HMO4
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Wei-Tzuoh Chen'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 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) |
| 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. Wei-Tzuoh Chen
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. Wei-Tzuoh Chen's NPI number?
Dr. Wei-Tzuoh Chen's NPI number is 1184732398. It was assigned on August 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Wei-Tzuoh Chen?
Dr. Wei-Tzuoh Chen is an internist in Visalia, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Wei-Tzuoh Chen practice?
Dr. Chen practices at 503 S Watson St, Visalia, CA 93277. Dr. Chen's primary practice is Coalinga Dialysis in Visalia, California.
What is Dr. Wei-Tzuoh Chen's office phone number?
The practice phone on file for Dr. Chen is (559) 934-0690.
What is Dr. Wei-Tzuoh Chen's medical license number?
Dr. Chen holds California license A34640, one of the licenses on file in 3 states.
Which states has Dr. Wei-Tzuoh Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in California (1979 to 2027), Illinois (1981 to 1982) and Ohio (1975 to 1982).
What medical group is Dr. Wei-Tzuoh Chen part of?
Dr. Chen is linked to The Nephrology Group, Inc.
Does Dr. Wei-Tzuoh Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 243 services in 2024.
How many Medicare patients does Dr. Wei-Tzuoh Chen see?
CMS counts 66 Medicare patients who saw Dr. Chen in 2024, with an average age of 65.
Is Dr. Wei-Tzuoh Chen board certified?
Yes. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
What services does Dr. Wei-Tzuoh Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were dialysis (90960), dialysis (90961) and surgery: heart and blood vessels (36415).
Where did Dr. Wei-Tzuoh Chen go to medical school?
Dr. Chen graduated from Taipei Medical University in 1969.
What drugs does Dr. Wei-Tzuoh Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Prosol, Clinisol and Amlodipine Besylate.
Has Dr. Wei-Tzuoh Chen received payments from drug or device companies?
CMS Open Payments shows $1,072 in general payments to Dr. Chen from 21 companies from 2016 to 2022. The largest total came from Relypsa, Inc.
How long has Dr. Wei-Tzuoh Chen been practicing?
Dr. Chen graduated from medical school in 1969, 57 years ago.
Does Dr. Wei-Tzuoh Chen do research?
Dmand AI links 1 publication to Dr. Chen.
What insurance does Dr. Wei-Tzuoh Chen accept?
Dr. Chen is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
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