KSB GASTROENTEROLOGY
NPI 1881023257
Internal Medicine - Gastroenterology in Irvine, CA
About Ksb Gastroenterology NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KSB GASTROENTEROLOGY (NPI 1881023257) is a healthcare organization registered as a gastroenterology in Irvine, California and active in the NPI registry since November 2013. The organization lists Kong Peng Yap, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ksb Gastroenterology is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Ksb Gastroenterology, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Ksb Gastroenterology's NPI number?
The NPI number for Ksb Gastroenterology is 1881023257. It was assigned to this organization in the NPPES registry on November 6, 2013.
Where is Ksb Gastroenterology located?
Ksb Gastroenterology is located at 33 Creek Rd Suite 380, Irvine, CA 92604. The listed phone number is (949) 517-8669.
What is Ksb Gastroenterology's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Ksb Gastroenterology enrolled in Medicare?
Yes. Ksb Gastroenterology is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Ksb Gastroenterology?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Ksb Gastroenterology. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Ksb Gastroenterology was last updated on November 6, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.
# Ksb Gastroenterology · NPI 1881023257
Gastroenterology organization in Irvine, California. Organization record, active in the CMS NPPES registry since November 6, 2013.
## Identity
- **NPI:** 1881023257 (Entity type: Organization)
- **Enumerated:** November 6, 2013
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **Organization subpart:** No
- **Authorized official:** Kong Yap, OWNER
## Practice location
- **Address:** 33 CREEK RD, SUITE 380, Irvine, CA 92604-4791
- **Phone:** (949) 517-8669
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 6, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1881023257) · Data from the CMS NPPES public registry.