Gastrointest Endosc
Deglutition DisordersDilatationEsophageal Stenosis
Dr. Tomasz J. Niewiarowski, MD
NPI1073624441PAC ID6305839895
- Medicare services, 2024
- 782
- Medicare patients, 2024
- 386
- Part D claims, 2024
- 710
- Publications
- 1
- Hospital affiliations
- 5
- Practice address
- 306 S New St Ste 201 Suite 201, Bethlehem, PA 18015
- Practice phone
- Call (610) 866-0113
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Vita Medical Associates
Multi-specialty group site · Bethlehem, Pennsylvania
Find Dr. Niewiarowski's professional email, personal email and mobile number
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Dr. Tomasz J. Niewiarowski is a gastroenterologist in Bethlehem, Pennsylvania
Dr. Niewiarowski practices at Vita Medical Associates in Bethlehem, Pennsylvania.
Dr. Niewiarowski's NPI, 1073624441, was assigned on August 31, 2006. Dr. Niewiarowski holds Pennsylvania license MD040218L.
NPI and contact details
- NPI
- 1073624441NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305839895
- NPI enumeration date
- August 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (610) 866-0113
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tomasz J. Niewiarowski practices at Vita Medical Associates in Bethlehem, Pennsylvania
Dr. Niewiarowski's primary practice is Vita Medical Associates, at 306 S New St Ste 201 Suite 201, Bethlehem, PA 18015. The practice phone is (610) 866-0113.
- Vita Medical Associates306 S New St Ste 201 Suite 201, Bethlehem, PA 18015Phone(610) 866-0113
Source: Dmand AI Affiliation Data
Dr. Tomasz J. Niewiarowski is affiliated with 10 sites of care and 7 medical groups
Dr. Niewiarowski's primary practice is Vita Medical Associates in Bethlehem, Pennsylvania. Dr. Niewiarowski is also affiliated with St. Luke's University Hospital - Bethlehem Campus. The medical group on file is Vita Medical Associates. Dmand AI also links Dr. Niewiarowski to 4 more hospitals, 6 medical groups and 4 group practices and clinics, each named with a free account.
Vita Medical AssociatesPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Tomasz J. Niewiarowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niewiarowski practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vita Medical Associates | Available with a free account |
| +9 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tomasz J. Niewiarowski is one of 899 gastroenterologists in Pennsylvania
Gastroenterology is Dr. Niewiarowski's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Niewiarowski is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Niewiarowski is licensed in Pennsylvania.
Specialties and state licenses
- Gastroenterology, PennsylvaniaPrimary
Gastroenterologists near Dr. Niewiarowski
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Tomasz J. Niewiarowski billed Medicare for 782 services in 2024
CMS data shows 782 Medicare services from Dr. Niewiarowski across 17 procedure codes in 2024, for 386 Medicare patients. Medicare paid $56,846 for them.
Medicare services, 2024782
Medicare patients386
Paid by Medicare$56,846
Procedure codes17
Dr. Niewiarowski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 2212024: 30638%
- Office and hospital visits
- 2023: 3332024: 28514%
- Lab and pathology
- 2023: 2102024: 14929%
- Tests and treatments
- 2023: 02024: 31
- Other services
- 2023: 142024: 1121%
Where Dr. Niewiarowski's Medicare services took place, 2024
- In an office53068%
- In a facility25232%
Dr. Niewiarowski compared with the Pennsylvania median for gastroenterologists, 2024
- Dr. Niewiarowski
- Pennsylvania median
- Medicare services
- 782vs 40195% above
- Medicare patients
- 386vs 29431% above
- Part D claims
- 512vs 37537% above
Medians across 899 gastroenterologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Niewiarowski's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Niewiarowski and other gastroenterologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tomasz J. Niewiarowski treated 386 Medicare patients in 2024, average age 74
CMS counts 386 Medicare patients who saw Dr. Niewiarowski in 2024. The largest group is 65 to 74, with 196 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.32, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Niewiarowski's median patient age at 68, with 58% women.
Medicare patients, 2024386
Average age74
Average risk score1.32
Also on Medicaid9%
Dr. Niewiarowski's Medicare patients by age, 2024
Dr. Niewiarowski's Medicare patients by sex, 2024
- Women23761%
- Men14939%
Chronic conditions among Dr. Niewiarowski's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Anxiety32%
- Chronic kidney disease29%
- Diabetes29%
- Mood disorders26%
- Depression25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Niewiarowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women58%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tomasz J. Niewiarowski wrote 710 Medicare Part D claims in 2024
In 2024, Dr. Niewiarowski wrote 710 Medicare Part D claims for 197 patients. 80% of them were for generic drugs. CMS names the drug for 512 of them, across 14 drugs with 11 or more claims each, at $128,180 in total drug cost. In 2023, CMS named 704 claims across 18 drugs.
Part D claims, 2024710
Drugs named by CMS14
Total drug cost$128,180
Part D patients197
Dr. Niewiarowski's Part D claims by kind of drug, 2024
- Generic568 claims80%
- Brand-name142 claims20%
Dr. Niewiarowski's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Niewiarowski's Part D claims, 2024
- Antibiotics4%26 of 710 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7042024: 51227%
Drugs named by CMS: 14 in 2024, 18 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Tomasz J. Niewiarowski ranks in the 81st percentile for colonoscopy in Medicare
Dr. Niewiarowski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Niewiarowski as offering telehealth. CMS counts 106 procedures of colonoscopy by Dr. Niewiarowski, more than 81% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Niewiarowski ranks in Medicare procedure volume
- Colonoscopy
- 81st percentile106 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 75th percentile92 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Tomasz J. Niewiarowski has 1 publication on record
Dmand AI links 1 paper to Dr. Niewiarowski in 2016.
Papers1
Recent publications by Dr. Niewiarowski
See who Dr. Niewiarowski researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Niewiarowski works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Tomasz J. Niewiarowski received $4,039 in industry payments from 2016 to 2025
CMS Open Payments shows 184 general payments to Dr. Niewiarowski from 46 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Janssen Pharmaceuticals, Inc paid the most, $508.
General payments to Dr. Niewiarowski by program year, 2016 to 2025
General payments to Dr. Niewiarowski by kind, 2016 to 2025
$4Kin total
- Food and beverage$3,91097%
- Education$1183%
- Consulting fees$110%
Companies that paid Dr. Niewiarowski the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Tomasz J. Niewiarowski is board certified in gastroenterology
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Tomasz J. Niewiarowski's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Tomasz J. Niewiarowski
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Tomasz J. Niewiarowski's NPI number?
Dr. Tomasz J. Niewiarowski's NPI number is 1073624441. It was assigned on August 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Tomasz J. Niewiarowski?
Dr. Tomasz J. Niewiarowski is a gastroenterologist in Bethlehem, Pennsylvania. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Tomasz J. Niewiarowski practice?
Dr. Niewiarowski practices at 306 S New St Ste 201 Suite 201, Bethlehem, PA 18015. Dr. Niewiarowski's primary practice is Vita Medical Associates in Bethlehem, Pennsylvania. Dmand AI also links Dr. Niewiarowski to 4 hospitals, 6 medical groups and 4 group practices and clinics.
What is Dr. Tomasz J. Niewiarowski's office phone number?
The practice phone on file for Dr. Niewiarowski is (610) 866-0113.
What is Dr. Tomasz J. Niewiarowski's medical license number?
Dr. Niewiarowski holds Pennsylvania license MD040218L.
Which hospitals is Dr. Tomasz J. Niewiarowski affiliated with?
Dr. Niewiarowski is affiliated with St. Luke's University Hospital - Bethlehem Campus. Dmand AI links Dr. Niewiarowski to 4 more hospitals.
What medical group is Dr. Tomasz J. Niewiarowski part of?
Dr. Niewiarowski is linked to Vita Medical Associates. Dmand AI links Dr. Niewiarowski to 6 more medical groups.
Does Dr. Tomasz J. Niewiarowski accept Medicare?
Yes. CMS data shows Dr. Niewiarowski billed Medicare for 782 services in 2024, and Dr. Niewiarowski accepts Medicare assignment.
Does Dr. Tomasz J. Niewiarowski offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Niewiarowski as offering telehealth services.
How many Medicare patients does Dr. Tomasz J. Niewiarowski see?
CMS counts 386 Medicare patients who saw Dr. Niewiarowski in 2024, with an average age of 74.
Show 6 more questionsShow fewer questions
Is Dr. Tomasz J. Niewiarowski board certified?
Yes. Dr. Niewiarowski is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Tomasz J. Niewiarowski bill to Medicare?
In 2024, Dr. Niewiarowski's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and surgery: digestive system (45385).
What drugs does Dr. Tomasz J. Niewiarowski prescribe most?
In 2024 Medicare Part D data, Dr. Niewiarowski's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Famotidine.
Has Dr. Tomasz J. Niewiarowski received payments from drug or device companies?
CMS Open Payments shows $4,039 in general payments to Dr. Niewiarowski from 46 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Tomasz J. Niewiarowski been practicing?
Dr. Niewiarowski graduated from medical school in 1982, 44 years ago.
Does Dr. Tomasz J. Niewiarowski do research?
Dmand AI links 1 publication to Dr. Niewiarowski.
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