NATH CHONGSUWAT (M.D.) – Hospitalist Physician, NPI 1225416829
Hospitalist Physician
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Profile Insights
NPPES metrics only — not quality of care.
1,093 HOSPITALIST in WI
Provider Addresses for NATH CHONGSUWAT (M.D.)
9576 Hwy 70
Minocqua, WI 545489067
Phone: (715) 358-1000
Type: Location
121 S WILKE RD STE 606
ARLINGTON HEIGHTS, IL 600051529
Phone:
Type: Mailing
9576 WI-70
MINOCQUA, WI 54548
Phone: (715) 358-1000
Type: Location
1000 N OAK AVE
MARSHFIELD, WI 544495703
Phone: (715) 387-5511
Type: Mailing
9576 HWY 70
MINOCQUA, WI 545489067
Phone: (715) 358-1000
Type: Location
121 S Wilke Rd Ste 606
Arlington Heights, IL 600051529
Phone: (224) 400-1751
Type: Location
3 Erie Ct Ste L700
Oak Park, IL 603022519
Phone: (708) 763-1222
Fax: (708) 763-1471
Type: Location
3400 MINISTRY PKWY
WESTON, WI 544765220
Phone: (715) 358-1000
Type: Location
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 $59.
Total Amount is formed as General ($59) + Research ($0) + Ownership ($0) = $59.
Last reported payment date: 2024-07-12 • Largest payer in this snapshot: Janssen Pharmaceuticals, Inc ($59).
Total Amount
$59
General + Research + Ownership
Payments
2
Total payment records
General Amount
$59
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Janssen Pharmaceuticals, Inc | $59 |
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: 2024-07-30
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20190719000970 | I | Hospitalist | WI | TBD |
| I20231101003491 | I | Hospitalist | IL | TBD |
| I20240730004071 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 98 | 53 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 58 | 36 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 44 | 44 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 44 | 42 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 35 | 27 | $0 |
Insurance plans in this area (ZIP 54548)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Pediatric Medicine | MO | |
| Physician Assistant | IL | |
| Nurse Practitioner | IL | |
| Internal Medicine, Hospitalist | CT | |
| Family Practice | IL | |
| Hospitalist, Internal Medicine | MO | |
| Internal Medicine, Pediatric Medicine | IL | |
| Family Practice | MO | |
| Physician Assistant | IL | |
| Physician Assistant | OH |
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