DR. VINCENT WEN CHIEN KAO DO
NPI 1649570268
Internal Medicine - Gastroenterology in Fountain Valley, CA
About Dr. Vincent Wen Chien Kao Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. VINCENT WEN CHIEN KAO DO (NPI 1649570268) is an individual gastroenterology provider in Fountain Valley, California, licensed in California (20A11408) and active in the NPI registry since October 2010. He is enrolled in Medicare PECOS and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Vincent Wen Chien Kao Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Vincent Kao reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 948 clinicians in this Medicare group
Tustin, CA 92780
- Reassigned Medicare billing, California enrollment
- 2,052 clinicians in this Medicare group
Los Alamitos, CA 90720
- Reassigned Medicare billing, California enrollment
- 228 clinicians in this Medicare group
Laguna Hills, CA 92653
- Reassigned Medicare billing, California enrollment
- 86 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92708 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FOUNTAIN VALLEY, CA 92708
FOUNTAIN VALLEY, CA 92708
FOUNTAIN VALLEY, CA 92708
FOUNTAIN VALLEY, CA 92708
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Vincent Kao's NPI number?
The NPI number for Vincent Kao is 1649570268. It was assigned to this individual provider in the NPPES registry on October 29, 2010.
Where is Vincent Kao located?
Vincent Kao practices at 18035 Brookhurst St Ste 2100, Fountain Valley, CA 92708. The listed phone number is (657) 241-9090.
What is Vincent Kao's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Vincent Kao enrolled in Medicare?
Yes. Vincent Kao is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Vincent Kao's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Vincent Kao reassigns Medicare benefits to 4 organizations: Memorialcare Medical Foundation (Fountain Valley, CA), Healthcare Partners Affiliates Medical Group (Tustin, CA), Centers For Family Medicine Gp (Los Alamitos, CA) and Saddleback Medical Group Inc (Laguna Hills, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Vincent Kao's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Vincent Kao was last updated on May 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Vincent Wen Chien Kao, DO · NPI 1649570268
Gastroenterology physician in Fountain Valley, California. Individual provider, active in the CMS NPPES registry since October 29, 2010.
## Identity
- **NPI:** 1649570268 (Entity type: Individual)
- **Enumerated:** October 29, 2010
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 20A11408 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 18035 BROOKHURST ST STE 2100, Fountain Valley, CA 92708-6738
- **Phone:** (657) 241-9090 · **Fax:** (714) 665-4603
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Memorialcare Medical Foundation (NPI 1205167350, Fountain Valley, CA); Healthcare Partners Affiliates Medical Group (NPI 1891981502, Tustin, CA); Centers For Family Medicine Gp (NPI 1467598243, Los Alamitos, CA); Saddleback Medical Group Inc (NPI 1386605822, Laguna Hills, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** May 8, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1649570268) · Data from the CMS NPPES public registry.