DR. HOANH THI NGUYEN MD
NPI 1982649133
Medical Genetics - Clinical Genetics (M.D.) in Saint Louis, MO
About Dr. Hoanh Thi Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HOANH THI NGUYEN MD (NPI 1982649133) is an individual clinical genetics (m.d.) provider in Saint Louis, Missouri, licensed in Missouri (2013002441) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with St Louis Childrens Hospital, and is a graduate of Tulane University School Of Medicine (2003).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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
Dr. Hoanh Thi Nguyen 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 Hoanh Nguyen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 628 clinicians in this Medicare group
Saint Louis, MO 63108
- Reassigned Medicare billing, Illinois enrollment
- 530 clinicians in this Medicare group
Columbia, MO 65212
- Reassigned Medicare billing, Missouri enrollment
- 1,395 clinicians in this Medicare group
Peoria, IL 61605
- Reassigned Medicare billing, Illinois enrollment
- 2,127 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Louis Childrens Hospital
Childrens · Saint Louis, MOMedicare 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.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Hoanh Nguyen's NPI number?
The NPI number for Hoanh Nguyen is 1982649133. It was assigned to this individual provider in the NPPES registry on June 19, 2006.
Where is Hoanh Nguyen located?
Hoanh Nguyen practices at 1 Childrens Pl Div Ped Genetics And Genomic Med, Saint Louis, MO 63110. The listed phone number is (314) 454-6093.
What is Hoanh Nguyen's specialty?
The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.
Is Hoanh Nguyen enrolled in Medicare?
Yes. Hoanh 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 Hoanh Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hoanh Nguyen reassigns Medicare benefits to 4 organizations: Washington University (Saint Louis, MO), Washington University Physicians In Illinois, Inc (Saint Louis, MO), The Curators Of The University Of Missouri (Columbia, MO) and Board Of Trustees Of The University Of Illinois (Peoria, IL). 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 Hoanh Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Hoanh Nguyen accept?
Health plans from Anthem Blue Cross and Blue Shield, Cox HealthPlans and UnitedHealthcare list Hoanh 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 Hoanh Nguyen affiliated with any hospitals?
According to CMS data, Hoanh Nguyen is affiliated with St Louis Childrens Hospital.
When was this NPI record last updated?
The NPPES record for Hoanh Nguyen was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Hoanh Thi Nguyen, MD · NPI 1982649133
Clinical Genetics (M.D.) physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 19, 2006.
## Identity
- **NPI:** 1982649133 (Entity type: Individual)
- **Enumerated:** June 19, 2006
- **Primary specialty:** Medical Genetics - Clinical Genetics (M.D.) · taxonomy 207SG0201X
- **State license:** 2013002441 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 CHILDRENS PL, DIV PED GENETICS AND GENOMIC MED, Saint Louis, MO 63110-1002
- **Phone:** (314) 454-6093 · **Fax:** (844) 965-9624
## 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): Washington University (NPI 1194765685, Saint Louis, MO); Washington University Physicians In Illinois, Inc (NPI 1457203135, Saint Louis, MO); The Curators Of The University Of Missouri (NPI 1235126921, Columbia, MO); Board Of Trustees Of The University Of Illinois (NPI 1467425322, Peoria, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tulane University School Of Medicine, class of 2003
## Record status
- **NPPES last updated:** April 17, 2025
- **Other identifiers:** Medicaid 200002600 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1982649133) · Data from the CMS NPPES public registry.