Thomas Eng, D.O.
Family Medicine Physician · Geneva, IL
Thomas Eng, D.O. is a family medicine physician with a practice address in Geneva, Illinois, and NPI 1639277551, issued on Sep 21, 2006. Check the license (Illinois 036107598, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Thomas Eng
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036107598 IL
Self-reported in NPPES; status is on the state search - Practice location
- 351 Delnor Dr, Geneva, IL 60134
- Phone
- (630) 262-1001
- Enumerated
- Sep 21, 2006
- Record last updated
- Jun 29, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (630) 262-8065
- Medicaid ID
- 036107598 IL
- Medicare enrollment
- Enrolled (PECOS I20070207000493); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 351 Delnor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas Eng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036107598Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% more Medicare Part D claims than the average family medicine physician in 2024
5,677 Medicare Part D claims for 692 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 243 claims were for opioids.
Most prescribed
- Atorvastatin Calcium384 claims
- Levothyroxine Sodium281 claims
- Lisinopril238 claims
- Amlodipine Besylate198 claims
- Tamsulosin Hcl161 claims
- Losartan Potassium158 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.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $856.92
6 payments; by number, the most common kind was food and beverage; the largest payer was Treace Medical Concepts, Inc. The 55,478 providers of this specialty with any payment received $902.55 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 one group practice
- Central Dupage Physician GroupGeneva, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Eng among 6,215 family medicine physician records in Illinois
Thomas Eng, D.O. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2000 · median 2006 among the 3,714 with a school on file
- Record last updated2018 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
49 family medicine physician records list a practice address in Geneva
They are 49 of the 1,023 NPPES records with a practice address in Geneva, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Geneva → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Warren Beeh, M.D.Geneva, IL 601341326048612
- Natalie Choi, MDGeneva, IL 601341154375582
- Peter Cladis, M.D.Geneva, IL 601341467452755
- Katherine Fackler-Chapman, M.D.Geneva, IL 601341528068988
- Christopher Fahey, M.D.Geneva, IL 601341306926415
- Michael Fremgen, M.D.Geneva, IL 601341770583072
- Thomas Hazel, M.D.Geneva, IL 601341730189176
- Viquar Khan-Mundozie, MDGeneva, IL 601341972671923
Common questions
What is Thomas Eng, D.O.'s NPI number?
Thomas Eng, D.O.'s National Provider Identifier (NPI) is 1639277551, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Eng, D.O. located?
The NPPES record lists a practice address at 351 Delnor Dr, Geneva, IL, 60134. Phone: (630) 262-1001. Providers update this record themselves, so call before visiting.
How can I verify Thomas Eng, D.O.'s license?
NPPES lists Illinois license number 036107598, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas Eng, D.O. prescribe under Medicare Part D?
In 2024, Thomas Eng, D.O. had 5,677 Medicare Part D claims for 692 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Thomas Eng, D.O.'s MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.