CHIT SU WAI MD
NPI 1780015438
Internal Medicine in Irvine, CA
About Chit Su Wai Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHIT SU WAI MD (NPI 1780015438) is an individual internal medicine provider in Irvine, California, licensed in California (A127042) and active in the NPI registry since December 2013. She is enrolled in Medicare PECOS, maintains a secondary practice location in Pomona, and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Chit Su Wai Md 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 Chit Su Wai reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Laguna Hills, CA 92653
- Reassigned Medicare billing, California enrollment
- 86 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
Fontana, CA 92335
- Reassigned Medicare billing, California enrollment
- 149 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92618 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Chit Su Wai's NPI number?
The NPI number for Chit Su Wai is 1780015438. It was assigned to this individual provider in the NPPES registry on December 5, 2013.
Where is Chit Su Wai located?
Chit Su Wai practices at 11 Technology Dr, Irvine, CA 92618. The listed phone number is (949) 923-3200.
What is Chit Su Wai's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Chit Su Wai enrolled in Medicare?
Yes. Chit Su Wai 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 Chit Su Wai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chit Su Wai reassigns Medicare benefits to 4 organizations: Saddleback Medical Group Inc (Laguna Hills, CA), Healthcare Partners Affiliates Medical Group (Tustin, CA), Centers For Family Medicine Gp (Los Alamitos, CA) and Pinnacle Medical Group, Inc (Fontana, 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 Chit Su Wai'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 Chit Su Wai was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Chit Su Wai, MD · NPI 1780015438
Internal Medicine physician in Irvine, California. Individual provider, active in the CMS NPPES registry since December 5, 2013.
## Identity
- **NPI:** 1780015438 (Entity type: Individual)
- **Enumerated:** December 5, 2013
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A127042 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 11 TECHNOLOGY DR, Irvine, CA 92618-2302
- **Phone:** (949) 923-3200
## 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): Saddleback Medical Group Inc (NPI 1386605822, Laguna Hills, CA); Healthcare Partners Affiliates Medical Group (NPI 1891981502, Tustin, CA); Centers For Family Medicine Gp (NPI 1467598243, Los Alamitos, CA); Pinnacle Medical Group, Inc (NPI 1376876912, Fontana, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** January 14, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1780015438) · Data from the CMS NPPES public registry.