Dr. Jeffrey D. Tomaszewski, MD
- Medicare services, 2024
- 1,374
- Medicare patients, 2024
- 253
- Part D claims, 2024
- 7,075
- Industry payments
- $407
- Affiliated sites
- 5
- Practice address
- 430-54 Pennsylvania Ave, Glen Ellyn, IL 60137
- Practice phone
- Call (630) 469-9200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Duly Health and Care
Glen Ellyn, Illinois
Find Dr. Tomaszewski's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Jeffrey D. Tomaszewski is an internist in Glen Ellyn, Illinois
Dr. Tomaszewski practices at Duly Health and Care in Glen Ellyn, Illinois.
Dr. Tomaszewski's NPI, 1831150036, was assigned on March 29, 2006. Dr. Tomaszewski graduated from Rush Medical College of Rush University in 2002. Dr. Tomaszewski holds Illinois license 036112627.
- NPI
- 1831150036NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537184924
- NPI enumeration date
- March 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (630) 469-9200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jeffrey D. Tomaszewski practices at Duly Health and Care in Glen Ellyn, Illinois
Dr. Tomaszewski's primary practice is Duly Health and Care, at 430-54 Pennsylvania Ave, Glen Ellyn, IL 60137 in Dupage County. The practice phone is (630) 469-9200.
- Duly Health and Care430-54 Pennsylvania Ave, Glen Ellyn, IL 60137 · Dupage CountyPhone(630) 469-9200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jeffrey D. Tomaszewski is affiliated with 6 sites of care and 1 medical group
Dr. Tomaszewski's primary practice is Duly Health and Care in Glen Ellyn, Illinois. The medical group on file is DuPage Medical Group. Dmand AI also links Dr. Tomaszewski to 3 more home health agencies, 1 group practice or clinic and 1 therapy and rehab clinic, each named with a free account. Dr. Tomaszewski's employer is on file too: a physical therapy & rehab clinic.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jeffrey D. Tomaszewski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tomaszewski practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Duly Health and Care | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jeffrey D. Tomaszewski is one of 5,652 internists in Illinois
Internal medicine is Dr. Tomaszewski's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tomaszewski is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Tomaszewski
Counts of internists 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. Jeffrey D. Tomaszewski billed Medicare for 1,374 services in 2024
CMS data shows 1,374 Medicare services from Dr. Tomaszewski across 24 procedure codes in 2024, for 253 Medicare patients. Medicare paid $47,716 for them. Every service was in an office.
Dr. Tomaszewski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 5162024: 69935%
- Office and hospital visits
- 2023: 2212024: 25214%
- Other services
- 2023: 1172024: 20676%
- Surgery
- 2023: 1402024: 16417%
- Tests and treatments
- 2023: 402024: 5333%
Dr. Tomaszewski compared with the Illinois median for internists, 2024
- Dr. Tomaszewski
- Illinois median
- Medicare services
- 1,374vs 5662.4 times
- Medicare patients
- 253vs 20822% above
- Part D claims
- 6,482vs 28422.8 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Tomaszewski'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.
Need commercial claims for Dr. Tomaszewski?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tomaszewski and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeffrey D. Tomaszewski treated 253 Medicare patients in 2024, average age 74
CMS counts 253 Medicare patients who saw Dr. Tomaszewski in 2024. The largest group is 65 to 74, with 132 patients. 72% of them have high cholesterol, and 63% have high blood pressure. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tomaszewski's median patient age at 70, with 29% women.
Dr. Tomaszewski's Medicare patients by age, 2024
Dr. Tomaszewski's Medicare patients by sex, 2024
- Women6927%
- Men18473%
Chronic conditions among Dr. Tomaszewski's Medicare patients, 2024
- High cholesterol72%
- High blood pressure63%
- Arthritis36%
- Ischemic heart disease32%
- Atrial fibrillation27%
- Chronic kidney disease23%
- Diabetes22%
- Heart failure22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tomaszewski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women29%
- Men70%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jeffrey D. Tomaszewski wrote 7,075 Medicare Part D claims in 2024
In 2024, Dr. Tomaszewski wrote 7,075 Medicare Part D claims for 717 patients. 93% of them were for generic drugs. CMS names the drug for 6,482 of them, across 89 drugs with 11 or more claims each, at $298,046 in total drug cost. In 2023, CMS named 6,066 claims across 97 drugs.
Dr. Tomaszewski's Part D claims by kind of drug, 2024
- Generic6,559 claims93%
- Brand-name478 claims7%
- Other38 claims1%
Dr. Tomaszewski'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. Tomaszewski's Part D claims, 2024
- Opioids1%84 of 7,075 claims
- Antibiotics3%181 of 7,075 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: 6,0662024: 6,4827%
Drugs named by CMS: 89 in 2024, 97 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. Jeffrey D. Tomaszewski offers telehealth to Medicare patients
Dr. Tomaszewski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tomaszewski as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Jeffrey D. Tomaszewski received $407 in industry payments from 2016 to 2025
CMS Open Payments shows 20 general payments to Dr. Tomaszewski from 7 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $135.
General payments to Dr. Tomaszewski by program year, 2016 to 2025
Companies that paid Dr. Tomaszewski 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. Jeffrey D. Tomaszewski graduated from Rush Medical College of Rush University
Dr. Tomaszewski graduated from Rush Medical College of Rush University in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jeffrey D. Tomaszewski'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Jeffrey D. Tomaszewski
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. Jeffrey D. Tomaszewski's NPI number?
Dr. Jeffrey D. Tomaszewski's NPI number is 1831150036. It was assigned on March 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey D. Tomaszewski?
Dr. Jeffrey D. Tomaszewski is an internist in Glen Ellyn, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jeffrey D. Tomaszewski practice?
Dr. Tomaszewski practices at 430-54 Pennsylvania Ave, Glen Ellyn, IL 60137. Dr. Tomaszewski's primary practice is Duly Health and Care in Glen Ellyn, Illinois. Dmand AI also links Dr. Tomaszewski to 3 home health agencies, 1 group practice or clinic and 1 therapy and rehab clinic.
What is Dr. Jeffrey D. Tomaszewski's office phone number?
The practice phone on file for Dr. Tomaszewski is (630) 469-9200.
What is Dr. Jeffrey D. Tomaszewski's medical license number?
Dr. Tomaszewski holds Illinois license 036112627.
What medical group is Dr. Jeffrey D. Tomaszewski part of?
Dr. Tomaszewski is linked to DuPage Medical Group.
Does Dr. Jeffrey D. Tomaszewski accept Medicare?
Yes. CMS data shows Dr. Tomaszewski billed Medicare for 1,374 services in 2024, and Dr. Tomaszewski accepts Medicare assignment.
Does Dr. Jeffrey D. Tomaszewski offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tomaszewski as offering telehealth services.
How many Medicare patients does Dr. Jeffrey D. Tomaszewski see?
CMS counts 253 Medicare patients who saw Dr. Tomaszewski in 2024, with an average age of 74.
What services does Dr. Jeffrey D. Tomaszewski bill to Medicare?
In 2024, Dr. Tomaszewski's most billed Medicare services were surgery: heart and blood vessels (36415), lab and pathology test (85610) and office visit, established patient (99214).
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Where did Dr. Jeffrey D. Tomaszewski go to medical school?
Dr. Tomaszewski graduated from Rush Medical College of Rush University in 2002.
What drugs does Dr. Jeffrey D. Tomaszewski prescribe most?
In 2024 Medicare Part D data, Dr. Tomaszewski's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Amlodipine Besylate.
Has Dr. Jeffrey D. Tomaszewski received payments from drug or device companies?
CMS Open Payments shows $407 in general payments to Dr. Tomaszewski from 7 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Jeffrey D. Tomaszewski been practicing?
Dr. Tomaszewski graduated from medical school in 2002, 24 years ago.
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