THACH N NGUYEN (MD) – Cardiovascular Disease Physician, NPI 1700872769
Cardiovascular Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,511 INTERNAL MEDICINE in IN
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Provider Addresses for THACH N NGUYEN (MD)
86th Place, Merrillville, Ross Township, Lake County, Indiana, 46410, United States
MERRILLVILLE, IN 464106258
Phone: (219) 756-1400
Fax: (219) 746-0876
Type: Location
200 EAST 86TH PLACE
MERRILLVILLE, IN 464106258
Phone: (219) 756-1400
Fax: (219) 746-0876
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 89 Open Payments records for all available years, with a total value of $1,746.
Total Amount is formed as General ($1,746) + Research ($0) + Ownership ($0) = $1,746.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: Novartis Pharmaceuticals Corporation ($567).
Total Amount
$1,746
General + Research + Ownership
Payments
89
Total payment records
General Amount
$1,746
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
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: 2004-11-16
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20041116000114 | I | Interventional Cardiology | IN | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 667 | 234 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 481 | 176 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 176 | 101 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 107 | 96 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 105 | 52 | $0 |
Insurance plans in this area (ZIP 46410)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERVENTIONAL CARDIOLOGY | IN | 78452 | Nuclear medicine study of vessels of heart using drugs or exercise multiple studies | 77 | 77 |
| INTERVENTIONAL CARDIOLOGY | IN | 93458 | Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart | 34 | 34 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Cardiovascular Disease (Cardiology) | IN | |
| Cardiovascular Disease (Cardiology), Internal Medicine | IN | |
| - | IN | |
| Cardiovascular Disease (Cardiology), Internal Medicine | IN | |
| Internal Medicine, Interventional Cardiology | IN | |
| Cardiovascular Disease (Cardiology), Internal Medicine | IN | |
| Internal Medicine, Cardiovascular Disease (Cardiology) | IN | |
| - | IN |
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