J Gastroenterol Hepatol
Dr. Vincent Wen Chien Kao, DO
- Medicare services, 2024
- 69
- Medicare patients, 2024
- 59
- Part D claims, 2024
- 1,087
- Publications
- 2
- Hospital affiliations
- 2
- Practice address
- 18035 Brookhurst St, Fountain Valley, CA 92708
- Practice phone
- Call (877) 696-3622
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Memorialcare Medical Foundation
Fountain Valley, California
Find Dr. Kao'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. Vincent Wen Chien Kao is a gastroenterologist in Fountain Valley, California
Dr. Kao practices at Memorialcare Medical Foundation in Fountain Valley, California.
Dr. Kao's NPI, 1649570268, was assigned on October 29, 2010. Dr. Kao graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009. Dr. Kao holds California license 20A11408.
- NPI
- 1649570268NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082859681
- NPI enumeration date
- October 29, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (877) 696-3622
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Vincent Wen Chien Kao practices at Memorialcare Medical Foundation in Fountain Valley, California
Dr. Kao's primary practice is Memorialcare Medical Foundation, at 18035 Brookhurst St, Fountain Valley, CA 92708 in Orange County. The practice phone is (877) 696-3622.
- Memorialcare Medical Foundation18035 Brookhurst St, Fountain Valley, CA 92708 · Orange CountyPhone(877) 696-3622
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Vincent Wen Chien Kao is affiliated with 5 sites of care and 4 medical groups
Dr. Kao's primary practice is Memorialcare Medical Foundation in Fountain Valley, California. Dr. Kao is also affiliated with Orange Coast Medical Center. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Kao to 1 more hospital, 3 medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Vincent Wen Chien Kao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kao practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorialcare Medical Foundation | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Vincent Wen Chien Kao is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Kao's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Kao is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Kao is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, gastrointestinal bleeding, hemorrhoids and irritable bowel syndrome (IBS) among the conditions Dr. Kao treats.
Gastroenterologists near Dr. Kao
Counts of gastroenterologists 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. Vincent Wen Chien Kao billed Medicare for 69 services in 2024
CMS data shows 69 Medicare services from Dr. Kao across 4 procedure codes in 2024, for 59 Medicare patients. Medicare paid $7,023 for them.
Dr. Kao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 742024: 5822%
- Surgery
- 2023: 242024: 1154%
- Other services
- 2023: 122024: 0100%
Where Dr. Kao's Medicare services took place, 2024
- In an office5884%
- In a facility1116%
Dr. Kao compared with the California median for gastroenterologists, 2024
- Dr. Kao
- California median
- Medicare services
- 69vs 58688% below
- Medicare patients
- 59vs 30280% below
- Part D claims
- 892vs 3802.3 times
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Kao'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. Kao?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kao and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Vincent Wen Chien Kao treated 59 Medicare patients in 2024, average age 71
CMS counts 59 Medicare patients who saw Dr. Kao in 2024. The largest group is 65 to 74, with 34 patients. 71% of them have high blood pressure, and 69% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kao's median patient age at 59, with 54% women.
Dr. Kao's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Kao's Medicare patients by sex, 2024
- Women3153%
- Men2847%
Chronic conditions among Dr. Kao's Medicare patients, 2024
- High blood pressure71%
- High cholesterol69%
- Arthritis46%
- Diabetes36%
- Mood disorders32%
- Depression31%
- Anxiety25%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kao'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
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Vincent Wen Chien Kao wrote 1,087 Medicare Part D claims in 2024
In 2024, Dr. Kao wrote 1,087 Medicare Part D claims for 494 patients. 81% of them were for generic drugs. CMS names the drug for 892 of them, across 14 drugs with 11 or more claims each, at $321,188 in total drug cost. In 2023, CMS named 1,087 claims across 16 drugs.
Dr. Kao's Part D claims by kind of drug, 2024
- Generic883 claims81%
- Brand-name204 claims19%
Dr. Kao'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.
Drug classes CMS tracks in Dr. Kao's Part D claims, 2024
- Antibiotics2%23 of 1,087 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,0872024: 89218%
Drugs named by CMS: 14 in 2024, 16 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. Vincent Wen Chien Kao ranks in the 66th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Kao accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Kao as offering telehealth. CMS counts 58 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Kao, more than 66% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Kao ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 66th percentile58 procedures
- Colonoscopy
- 57th percentile36 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Vincent Wen Chien Kao has 2 publications on record
Dmand AI links 2 papers to Dr. Kao. Dr. Kao's most frequent co-author is Myron John Tong, MD.
Dr. Kao's most frequent co-authors
Recent publications by Dr. Kao
See who Dr. Kao researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kao works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Vincent Wen Chien Kao received $3,301 in industry payments from 2016 to 2025
CMS Open Payments shows 110 general payments to Dr. Kao from 18 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Abbvie Inc. paid the most, $937.
General payments to Dr. Kao by program year, 2016 to 2025
General payments to Dr. Kao by kind, 2016 to 2025
- Food and beverage$3,20997%
- Education$913%
Companies that paid Dr. Kao the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Vincent Wen Chien Kao graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Kao graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009.
- Medical school
- Board certified in gastroenterology
- Board certified in 2010 - 2027
Source: Dmand AI Professional Profile Data
Dr. Vincent Wen Chien Kao accepts plans from 9 insurance carriers
Dr. Kao is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- LA Care
- Regence Health Plans
- CMS Medicare
- Humana
- +1 more carriersWith a free account
Plan types Dr. Kao accepts, by number of carriers
- Medicare8
- PPO5
- HMO4
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Vincent Wen Chien Kao'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Vincent Wen Chien Kao
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. Vincent Wen Chien Kao's NPI number?
Dr. Vincent Wen Chien Kao's NPI number is 1649570268. It was assigned on October 29, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Vincent Wen Chien Kao?
Dr. Vincent Wen Chien Kao is a gastroenterologist in Fountain Valley, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Vincent Wen Chien Kao practice?
Dr. Kao practices at 18035 Brookhurst St, Fountain Valley, CA 92708. Dr. Kao's primary practice is Memorialcare Medical Foundation in Fountain Valley, California. Dmand AI also links Dr. Kao to 1 hospital, 3 medical groups and 2 group practices and clinics.
What is Dr. Vincent Wen Chien Kao's office phone number?
The practice phone on file for Dr. Kao is (877) 696-3622.
What is Dr. Vincent Wen Chien Kao's medical license number?
Dr. Kao holds California license 20A11408.
Which hospitals is Dr. Vincent Wen Chien Kao affiliated with?
Dr. Kao is affiliated with Orange Coast Medical Center. Dmand AI links Dr. Kao to 1 more hospital.
What medical group is Dr. Vincent Wen Chien Kao part of?
Dr. Kao is linked to Optum - Downtown Los Angeles. Dmand AI links Dr. Kao to 3 more medical groups.
Does Dr. Vincent Wen Chien Kao accept Medicare?
Yes. CMS data shows Dr. Kao billed Medicare for 69 services in 2024, and Dr. Kao accepts Medicare assignment.
Does Dr. Vincent Wen Chien Kao offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Kao as offering telehealth services.
How many Medicare patients does Dr. Vincent Wen Chien Kao see?
CMS counts 59 Medicare patients who saw Dr. Kao in 2024, with an average age of 71.
Show 9 more questionsShow fewer questions
Is Dr. Vincent Wen Chien Kao board certified?
Yes. Dr. Kao is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Vincent Wen Chien Kao bill to Medicare?
In 2024, Dr. Kao's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and office visit, new patient (99203).
Where did Dr. Vincent Wen Chien Kao go to medical school?
Dr. Kao graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009.
What drugs does Dr. Vincent Wen Chien Kao prescribe most?
In 2024 Medicare Part D data, Dr. Kao's most prescribed drugs by claims were Sod Sulf-Potass Sulf-Mag Sulf, Omeprazole and Pantoprazole Sodium.
Has Dr. Vincent Wen Chien Kao received payments from drug or device companies?
CMS Open Payments shows $3,301 in general payments to Dr. Kao from 18 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Vincent Wen Chien Kao been practicing?
Dr. Kao graduated from medical school in 2009, 17 years ago.
Does Dr. Vincent Wen Chien Kao do research?
Dmand AI links 2 publications to Dr. Kao.
Who does Dr. Vincent Wen Chien Kao publish with?
Dr. Kao's most frequent co-authors are Myron John Tong, MD (2 shared papers).
What insurance does Dr. Vincent Wen Chien Kao accept?
Dr. Kao is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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