MS. MARGARET T NGUYEN AA
NPI 1790704682
Anesthesiologist Assistant in Atlanta, GA
About Ms. Margaret T Nguyen Aa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARGARET T NGUYEN AA (NPI 1790704682) is an individual anesthesiologist assistant in Atlanta, Georgia, licensed in Georgia (4383) and active in the NPI registry since July 2006. She is affiliated with Saint Joseph's Hospital Of Atlanta, Inc and is a graduate of Emory University School Of Medicine (2004).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
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
Ms. Margaret T Nguyen Aa 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
2Medicare enrollment records show Margaret Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Atlanta, GA 30342
- Reassigned Medicare billing, Georgia enrollment
- 179 clinicians in this Medicare group
Lagrange, GA 30240
- Reassigned Medicare billing, Georgia enrollment
- 1,506 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
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Saint Joseph's Hospital Of Atlanta, Inc
Acute Care Hospitals · Atlanta, GAEmory Johns Creek Hospital
Acute Care Hospitals · Johns Creek, GAMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
ATLANTA, GA 30342
SANDY SPRINGS, GA 30342
ATLANTA, GA 30342
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 Nguyen's NPI number?
The NPI number for Margaret Nguyen is 1790704682. It was assigned to this individual provider in the NPPES registry on July 19, 2006.
Where is Margaret Nguyen located?
Margaret Nguyen practices at 5665 Peachtree Dunwoody Rd, Atlanta, GA 30342. The listed phone number is (678) 843-7324.
What is Margaret Nguyen's specialty?
The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.
Is Margaret Nguyen enrolled in Medicare?
Yes. Margaret Nguyen 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 Margaret Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Nguyen reassigns Medicare benefits to 2 organizations: Physician Specialists In Anesthesia, P.C. (Atlanta, GA) and Emory Specialty Associates, LLC (Lagrange, GA). 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 Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Nguyen accept?
Health plans from Oscar Health list Margaret Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Margaret Nguyen affiliated with any hospitals?
According to CMS data, Margaret Nguyen is affiliated with Saint Joseph's Hospital Of Atlanta, Inc and Emory Johns Creek Hospital.
When was this NPI record last updated?
The NPPES record for Margaret Nguyen was last updated on January 28, 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.
# Ms. Margaret T Nguyen, AA · NPI 1790704682
Anesthesiologist Assistant physician in Atlanta, Georgia. Individual provider, active in the CMS NPPES registry since July 19, 2006.
## Identity
- **NPI:** 1790704682 (Entity type: Individual)
- **Enumerated:** July 19, 2006
- **Primary specialty:** Anesthesiologist Assistant · taxonomy 367H00000X
- **State license:** 4383 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 5665 PEACHTREE DUNWOODY RD, Atlanta, GA 30342-1764
- **Phone:** (678) 843-7324
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Physician Specialists In Anesthesia, P.C. (NPI 1316968662, Atlanta, GA); Emory Specialty Associates, LLC (NPI 1407864168, Lagrange, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 2004
## Record status
- **NPPES last updated:** January 28, 2026
- **Other identifiers:** Medicaid 832486291 (GA); Medicaid 832486291B (GA)
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Source: [NPI Profile](https://npiprofile.com/npi/1790704682) · Data from the CMS NPPES public registry.