MS. AN THUY HONG NGUYEN (PA-C) – Physician Assistant, NPI 1134899818
Physician Assistant
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
5,035 PHYSICIAN ASSISTANT in IL
Provider Addresses for MS. AN THUY HONG NGUYEN (PA-C)
4247 LACLEDE AVE
SAINT LOUIS, MO 631082814
Phone: (815) 608-0720
Type: Mailing
1 SAINT ELIZABETH BLVD
O FALLON, IL 622691099
Phone: (618) 234-2120
Type: Location
621 S NEW BALLAS RD STE 560A
SAINT LOUIS, MO 631418261
Phone: (314) 251-6440
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $136.
Total Amount is formed as General ($136) + Research ($0) + Ownership ($0) = $136.
Last reported payment date: 2024-06-07 • Largest payer in this snapshot: ConvaTec Inc. ($96).
Total Amount
$136
General + Research + Ownership
Payments
2
Total payment records
General Amount
$136
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ConvaTec Inc. | $96 |
| Davol Inc. | $40 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2023-09-26
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20211027000505 | I | Physician Assistant | IL | TBD |
| I20230926000519 | I | Physician Assistant | MO | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 70 | 69 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 49 | 48 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 21 | 21 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 63108)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | LA | |
| Family Practice | MO | |
| - | IL | |
| Nurse Practitioner | IL | |
| Physician Assistant | MO | |
| - | IL | |
| Nurse Practitioner | IL | |
| Physician Assistant | IL | |
| - | IL | |
| Physician Assistant | IL |
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