NINA XIAO HWANG MD
NPI 1427286343
Pediatrics in Orange, CA
About Nina Xiao Hwang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NINA XIAO HWANG MD (NPI 1427286343) is an individual pediatrics provider in Orange, California, licensed in California (A107879) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS and is a graduate of Chicago College Of Medicine And Surgery (2007).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 1
Group Practice 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
Nina Xiao Hwang 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
3Medicare enrollment records show Nina Hwang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 9 clinicians in this Medicare group
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Childrens Hospital Of Orange County
- 190 clinicians in this Medicare group
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 143 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 92868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92868
ORANGE, CA 92868
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 Nina Hwang's NPI number?
The NPI number for Nina Hwang is 1427286343. It was assigned to this individual provider in the NPPES registry on June 30, 2009. The provider is also known as Nina X. Luna MD.
Where is Nina Hwang located?
Nina Hwang practices at 701 South Parker Street Suite 1000, Orange, CA 92868. The listed phone number is (714) 221-1200.
What is Nina Hwang's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Nina Hwang enrolled in Medicare?
Yes. Nina Hwang 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 Nina Hwang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nina Hwang reassigns Medicare benefits to 3 organizations: Center For Comprehensive Care & Diagnosis Of Inherited Blood Disorders (Orange, CA), Children's Hospital Of Orange County (Orange, CA) and Uc Regents Uci Dept Of Pediatrics (Orange, 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 Nina Hwang'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 Nina Hwang was last updated on August 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Nina Xiao Hwang, MD · NPI 1427286343
Pediatrics physician in Orange, California. Individual provider, active in the CMS NPPES registry since June 30, 2009.
## Identity
- **NPI:** 1427286343 (Entity type: Individual)
- **Enumerated:** June 30, 2009
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A107879 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 701 SOUTH PARKER STREET, SUITE 1000, Orange, CA 92868
- **Phone:** (714) 221-1200 · **Fax:** (714) 221-1299
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Center For Comprehensive Care & Diagnosis Of Inherited Blood Disorders (NPI 1679875942, Orange, CA); Children's Hospital Of Orange County (NPI 1275975104, Orange, CA); Uc Regents Uci Dept Of Pediatrics (NPI 1235187311, Orange, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Chicago College Of Medicine And Surgery, class of 2007
## Record status
- **NPPES last updated:** August 2, 2024
- **Other identifiers:** Medicaid 1427286343 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1427286343) · Data from the CMS NPPES public registry.