DR. KHIEM NGUYEN (MD) – Gastroenterology Physician, NPI 1316922511
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,474 GASTROENTEROLOGY in FL
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Provider Addresses for DR. KHIEM NGUYEN (MD)
1822, Southeast Port St Lucie Boulevard, Port St. Lucie, St. Lucie County, Florida, 34952, United States
PORT ST LUCIE, FL 349525545
Phone: (772) 337-2001
Fax: (772) 398-7030
Type: Mailing
841 Hospital Rd Ste 3200
Indiana, PA 157013635
Phone: (724) 463-1414
Fax: (724) 463-1541
Type: Location
Elm and Carlton St
Buffalo, NY 142630001
Phone: (716) 845-2300
Type: Location
720 W Mahoning St Ste 300
Punxsutawney, PA 157671351
Phone: (724) 357-8087
Fax: (814) 246-5247
Type: Location
25 Colony Blvd
Blairsville, PA 157177971
Phone: (724) 459-1790
Fax: (724) 723-8090
Type: Location
621 S MAIN ST
DU BOIS, PA 158011413
Phone: (814) 371-0600
Fax: (814) 372-4764
Type: Location
CELL AND VIRUS BUILDING
SUITE 530
BUFFALO, NY 142630001
Phone: (716) 845-3510
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 20 Open Payments records for all available years, with a total value of $7,814.
Total Amount is formed as General ($7,814) + Research ($0) + Ownership ($0) = $7,814.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: Evoke Pharma, Inc. ($7,551).
Total Amount
$7,814
General + Research + Ownership
Payments
20
Total payment records
General Amount
$7,814
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2025-04-14
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20060905000360 | I | Gastroenterology | PA | TBD |
| I20230815001092 | I | Gastroenterology | NY | TBD |
| I20250414000703 | I | Gastroenterology | GA | 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 |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 103 | 99 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 91 | 67 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 84 | 56 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 40 | 39 | $0 |
| G0500 | Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 19 | 19 | $0 |
Insurance plans in this area (ZIP 34952)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | FL | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 29 | 27 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Infectious Disease | GA | |
| Family Practice | GA | |
| Physician Assistant | GA | |
| Family Practice | GA | |
| Physician Assistant | GA | |
| Internal Medicine | GA | |
| - | GA | |
| Cardiovascular Disease (Cardiology), Internal Medicine | GA | |
| - | GA | |
| - | GA |
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