Tomasz J. Niewiarowski, M.D.
Gastroenterology Physician · Bethlehem, PA
Tomasz J. Niewiarowski, M.D. is a gastroenterology physician with a practice address in Bethlehem, Pennsylvania, and NPI 1073624441, issued on Aug 31, 2006. Check the license (Pennsylvania MD040218L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Tomasz J. Niewiarowski
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- MD040218L PA
Self-reported in NPPES; status is on the state search - Practice location
- 306 S New St Ste 201, Bethlehem, PA 18015
- Phone
- (610) 866-0113
- Enumerated
- Aug 31, 2006
- Record last updated
- May 29, 2024
- Fax
- (610) 974-8589
- Medicaid ID
- 0012930600003 PA
- Medicare enrollment
- Enrolled (PECOS I20040408000700); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,049 in Pennsylvania → Look up another NPI →
Also registered at 306 S New St Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Boylan, MDGastroenterology Physician1538159546
- Anna Niewiarowska, M.D.Hematology & Oncology Physician1003927559
Verify Tomasz J. Niewiarowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD040218LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average gastroenterology physician in 2024
710 Medicare Part D claims for 197 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Omeprazole144 claims
- Pantoprazole Sodium69 claims
- Famotidine59 claims
- Linzess45 claims
- Dicyclomine Hcl43 claims
- Budesonide Dr31 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $856.40
39 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Geisinger ClinicWilkes Barre, PA
- Mount Nittany Medical Center Health Services IncState College, PA
- Vita Medical Associates, PCBethlehem, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tomasz J. Niewiarowski among 1,049 gastroenterology physician records in Pennsylvania
Tomasz J. Niewiarowski, M.D. is one of 1,049 gastroenterology physician records with a practice address in Pennsylvania. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 47% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1982 · median 2003 among the 769 with a school on file
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Pennsylvania
There are 1,049 gastroenterology physician records in Pennsylvania.
All 1,049 in Pennsylvania → Every provider in Bethlehem → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- James Boylan, MDBethlehem, PA 180151538159546
- Kimberly Chaput, D.O.Fountain Hill, PA 180151255537882
- Edward Chen, M.D.Bethlehem, PA 180151679675938
- Berhanu Geme, M.D.Fountain Hill, PA 180151376781492
- Christopher Hibbard, D.O.Fountain Hill, PA 180151427379700
- Sarina Kapoor, M.D.Fountain Hill, PA 180151861788531
- Sinan Kutty, M.D.Fountain Hill, PA 180151194940601
- Zheng Lin, M.D.Fountain Hill, PA 180151588947469
Common questions
What is Tomasz J. Niewiarowski, M.D.'s NPI number?
Tomasz J. Niewiarowski, M.D.'s National Provider Identifier (NPI) is 1073624441, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tomasz J. Niewiarowski, M.D. located?
The NPPES record lists a practice address at 306 S New St Ste 201, Bethlehem, PA, 18015. Phone: (610) 866-0113. Providers update this record themselves, so call before visiting.
How can I verify Tomasz J. Niewiarowski, M.D.'s license?
NPPES lists Pennsylvania license number MD040218L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tomasz J. Niewiarowski, M.D. prescribe under Medicare Part D?
In 2024, Tomasz J. Niewiarowski, M.D. had 710 Medicare Part D claims for 197 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.