Doctor profile · Federal record
Dr. Tomasz Niewiarowski, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Bethlehem, PA
- NPI 1073624441
- Accepts Medicare
- 44 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
306 S New St Ste 201
Bethlehem, PA 180151652
(610) 866-0113
fax (610) 974-8589 - Additional location
-
164 Greenview Drive, Mount Nittany Health Gastroenterology
State College, PA 16803
(814) 278-4631
fax (814) 278-4685 - Additional location
-
3901 S Atherton St Ste 2
State College, PA 168018324
(814) 278-4631
fax (814) 278-4685 - Additional location
-
675 Baltimore Dr.
Wilkes Barre, PA 187027900
(570) 808-5780
fax (570) 808-5753
Show 1 more location
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- May 29, 2024
- Year of graduation
- 1982 — 44 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Pennsylvania #MD040218L
- Medicaid
- PA #0012930600003
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1073624441. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
778
Distinct HCPCS
10
Medicare allowed
$73,305
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 155 | 130 | $86 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 118 | 85 | $115 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 72 | 55 | $7 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 68 | 68 | $242 | |
80053 |
Blood test, comprehensive group of blood chemicals | 68 | 50 | $10 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 45 | 44 | $103 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 36 | 34 | $88 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 34 | 34 | $159 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 33 | 33 | $154 | |
83735 |
Magnesium level | 32 | 18 | $6 |
In context: peer comparison
Among 3 peers in Bethlehem Gastroenterology Physician, average services per provider: 39. This provider delivers 20× the peer median.Open Payments
Industry payments received
All-time total
$856
Transactions
33
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 5 | $117.36 | |
| Janssen Biotech, INC. | 3 | $94.52 | |
| Daiichi Sankyo INC. | 3 | $64.28 | |
| E.R. Squibb & Sons, L.L.C. | 3 | $64.03 | |
| Merck Sharp & Dohme LLC | 3 | $61.76 | |
| Tempus Ai, INC | 3 | $56.36 | |
| Ferring Pharmaceuticals INC. | 2 | $46.14 | |
| Celgene Corporation | 2 | $39.97 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 2 | $37.02 | |
| Pfizer INC. | 2 | $36.96 | |
| GlaxoSmithKline, LLC. | 1 | $30.28 | |
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $28.06 | |
| Sobi, INC | 1 | $24.38 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $21.72 | |
| Puma Biotechnology, INC. | 1 | $21.55 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
671
Patients
145
Total drug cost
$98,355
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 171 | 55 | $2,588 |
| Famotidine | Generic | 94 | 31 | $1,474 |
| Pantoprazole Sodium | Generic | 82 | 24 | $1,037 |
| Linzess (Linaclotide) | Brand | 68 | 14 | $47,947 |
| Dicyclomine Hcl | Generic | 59 | 21 | $1,537 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 32 | 0 | $2,413 |
| Ondansetron Odt (Ondansetron) | Brand | 29 | 0 | $927 |
| Budesonide Ec (Budesonide) | Brand | 23 | 0 | $4,632 |
| Esomeprazole Magnesium | Generic | 23 | 0 | $776 |
| Mesalamine | Generic | 23 | 0 | $18,682 |
Hospital affiliations
Frequently asked questions
What is Dr. Tomasz Niewiarowski's medical specialty?
Dr. Tomasz Niewiarowski practices Gastroenterology Physician in Bethlehem, PA.
Where does Dr. Tomasz Niewiarowski practice?
Dr. Tomasz Niewiarowski practices at 306 S New St Ste 201, Bethlehem, PA 180151652. Office phone: 6108660113.
What is Dr. Tomasz Niewiarowski's NPI?
Dr. Tomasz Niewiarowski's National Provider Identifier (NPI) is 1073624441, issued by NPPES.
Does Dr. Tomasz Niewiarowski accept Medicare assignment?
Yes. Dr. Tomasz Niewiarowski accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tomasz Niewiarowski commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS 85025). Source: CMS Medicare Physician & Other Practitioners file.