TOMASZ J NIEWIAROWSKI (M.D.) – Gastroenterology Physician, NPI 1073624441
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,182 GASTROENTEROLOGY in PA
Provider Addresses for TOMASZ J NIEWIAROWSKI (M.D.)
306 S NEW ST STE 201
BETHLEHEM, PA 180151112
Phone: (610) 866-0113
Fax: (610) 974-8589
Type: Mailing
164 Greenview Drive
Mount Nittany Health Gastroenterology
State College, PA 16803
Phone: (814) 278-4631
Fax: (814) 278-4685
Type: Location
675 Baltimore Dr.
Wilkes Barre, PA 187027900
Phone: (570) 808-5780
Fax: (570) 808-5753
Type: Location
3901 S Atherton St Ste 2
State College, PA 168018324
Phone: (814) 278-4631
Fax: (814) 278-4685
Type: Location
800, Ostrum Street, Fountain Hill, Lehigh County, Pennsylvania, 18015, United States
SUITE 300
FOUNTAIN HILL, PA 180151015
Phone: (610) 974-9540
Fax: (610) 974-8589
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 76 Open Payments records for all available years, with a total value of $1,603.
Total Amount is formed as General ($1,603) + Research ($0) + Ownership ($0) = $1,603.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: Janssen Biotech, Inc. ($312).
Total Amount
$1,603
General + Research + Ownership
Payments
76
Total payment records
General Amount
$1,603
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Janssen Biotech, Inc. | $312 |
| E.R. Squibb & Sons, L.L.C. | $157 |
| Daiichi Sankyo Inc. | $151 |
| ABBVIE INC. | $117 |
| Takeda Pharmaceuticals U.S.A., Inc. | $68 |
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: 2023-12-28
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 |
|---|---|---|---|---|
| I20040408000700 | I | Gastroenterology | PA | TBD |
| I20231228002458 | I | Gastroenterology | MD | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 155 | 130 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 118 | 85 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 72 | 55 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 68 | 68 | $0 |
| 80053 | Blood test, comprehensive group of blood chemicals | 68 | 50 | $0 |
Insurance plans in this area (ZIP 18015)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Registered Dietitian Or Nutrition Professional | PA | |
| - | PA | |
| Nurse Practitioner | PA | |
| - | PA | |
| Nurse Practitioner | PA | |
| - | PA | |
| - | PA | |
| Physician Assistant | PA | |
| Internal Medicine, Hospice/Palliative Care | PA | |
| Diagnostic Radiology | PA |
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