MARGARET M HWANG MD
NPI 1720261597
Pediatrics in Las Vegas, NV
About Margaret M Hwang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET M HWANG MD (NPI 1720261597) is an individual pediatrics provider in Las Vegas, Nevada, licensed in Nevada (12008) and active in the NPI registry since December 2007. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Margaret M Hwang Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Margaret Hwang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Las Vegas, NV 89128
- Reassigned Medicare billing, Nevada enrollment
- 608 clinicians in this Medicare group
Las Vegas, NV 89106
- Reassigned Medicare billing, Nevada enrollment
- 406 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 89128 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 Margaret Hwang's NPI number?
The NPI number for Margaret Hwang is 1720261597. It was assigned to this individual provider in the NPPES registry on December 14, 2007.
Where is Margaret Hwang located?
Margaret Hwang practices at 2704 N Tenaya Way, Las Vegas, NV 89128. The listed phone number is (702) 877-5133.
What is Margaret Hwang's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Margaret Hwang enrolled in Medicare?
Yes. Margaret Hwang is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Margaret Hwang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Hwang reassigns Medicare benefits to 2 organizations: Optum Medical Group II Rhodes P C (Las Vegas, NV) and Southwest Medical Associates, Inc (Las Vegas, NV). 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 Margaret 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 Margaret Hwang was last updated on March 14, 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.
# Margaret M Hwang, MD · NPI 1720261597
Pediatrics physician in Las Vegas, Nevada. Individual provider, active in the CMS NPPES registry since December 14, 2007.
## Identity
- **NPI:** 1720261597 (Entity type: Individual)
- **Enumerated:** December 14, 2007
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 12008 (Nevada)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2704 N TENAYA WAY, Las Vegas, NV 89128-0424
- **Phone:** (702) 877-5133
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Optum Medical Group II Rhodes P C (NPI 1790329407, Las Vegas, NV); Southwest Medical Associates, Inc (NPI 1659346005, Las Vegas, NV) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 14, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1720261597) · Data from the CMS NPPES public registry.