Roy Thomas, DO, MPH
Family Medicine Physician · Geneva, IL
Roy Thomas, DO, MPH is a family medicine physician with a practice address in Geneva, Illinois, and NPI 1609452226, issued on Mar 23, 2021. Check the license (Illinois 125.077539, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Roy Thomas
- Credential
- DO, MPH
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 125.077539 IL
Self-reported in NPPES; status is on the state search - Practice location
- 298 Randall RD, Geneva, IL 60134
- Phone
- (630) 938-3300
- Enumerated
- Mar 23, 2021
- Record last updated
- Apr 23, 2024
- Fax
- (630) 938-3310
- Medicare enrollment
- Enrolled (PECOS I20240529002405); accepts Medicare assignment
- 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 298 Randall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kathleen Carpenter, MDStudent in an Organized Health Care Education/Training Program1528861564
- Ameel Chaudhary, MDFamily Medicine Physician1124629183
- Natalie Choi, MDFamily Medicine Physician1154375582
- Megan Cornell, LCSWClinical Social Worker1811366859
Verify Roy Thomas 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 125.077539Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average family medicine physician in 2024
312 Medicare Part D claims for 78 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium18 claims
- Duloxetine Hcl17 claims
- Gabapentin14 claims
- Lisinopril14 claims
- Pantoprazole Sodium13 claims
- Metoprolol Succinate12 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.
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).
Roy Thomas among 6,215 family medicine physician records in Illinois
Roy Thomas, DO, MPH 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 2021, is newer than 84% of them.
- NPI issued2021 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2021 · median 2006 among the 3,714 with a school on file
- Record last updated2024 · 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
- Thomas Eng, D.O.Geneva, IL 601341639277551
- 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
Common questions
What is Roy Thomas, DO, MPH's NPI number?
Roy Thomas, DO, MPH's National Provider Identifier (NPI) is 1609452226, issued on Mar 23, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Roy Thomas, DO, MPH located?
The NPPES record lists a practice address at 298 Randall RD, Geneva, IL, 60134. Phone: (630) 938-3300. Providers update this record themselves, so call before visiting.
How can I verify Roy Thomas, DO, MPH's license?
NPPES lists Illinois license number 125.077539, 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 Roy Thomas, DO, MPH prescribe under Medicare Part D?
In 2024, Roy Thomas, DO, MPH had 312 Medicare Part D claims for 78 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.