Susan M. Thomas, MD
Internal Medicine Physician · Vernon Hills, IL
Susan M. Thomas, MD is an internal medicine physician with a practice address in Vernon Hills, Illinois, and NPI 1750440251, issued on Dec 8, 2006. Check the license (Illinois 036-107542, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Susan M. Thomas
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-107542 IL
Self-reported in NPPES; status is on the state search - Practice location
- 225 N Milwaukee Ave, Vernon Hills, IL 60061
- Phone
- (847) 941-7600
- Enumerated
- Dec 8, 2006
- Record last updated
- Jan 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (847) 941-7698
- Medicare enrollment
- Enrolled (PECOS I20050830000692); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 225 N Milwaukee Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alan Aronson, MDInternal Medicine Physician1992864946
- Tara Atta, M.D.Cardiovascular Disease Physician1639166374
- Rachel Blumenthal, C.N.M.Advanced Practice Midwife1861618647
- Carl Buccellato, MDObstetrics & Gynecology Physician1265545446
- Carissa Devereux, PT, DPTPhysical Therapist1255056909
Verify Susan M. 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 036-107542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average internal medicine physician in 2024
5,149 Medicare Part D claims for 646 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 21 claims were for opioids.
Most prescribed
- Atorvastatin Calcium515 claims
- Levothyroxine Sodium295 claims
- Amlodipine Besylate248 claims
- Losartan Potassium226 claims
- Alendronate Sodium167 claims
- Omeprazole133 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): 97.3 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).
Bills Medicare through one group practice
- Endeavor Health Medical GroupVernon Hills, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susan M. Thomas among 7,238 internal medicine physician records in Illinois
Susan M. Thomas, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1999 · median 2003 among the 3,580 with a school on file
- Record last updated2021 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 internal medicine physician records list a practice address in Vernon Hills
They are 19 of the 704 NPPES records with a practice address in Vernon Hills, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Vernon Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rafa Adi, M.D.Vernon Hills, IL 600611205845054
- Nadeem Alavi, DOVernon Hills, IL 600611609934983
- Alan Aronson, MDVernon Hills, IL 600611992864946
- Howard Baker, D.O.Vernon Hills, IL 600611558326439
- Fanan Falouji, M.D.Vernon Hills, IL 600611306855481
- Vincent Fang, MDVernon Hills, IL 600611851450654
- Louis Kanter, MDVernon Hills, IL 600611366464281
- John Kiriklakis, M.D.Vernon Hills, IL 600611730189713
Common questions
What is Susan M. Thomas, MD's NPI number?
Susan M. Thomas, MD's National Provider Identifier (NPI) is 1750440251, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan M. Thomas, MD located?
The NPPES record lists a practice address at 225 N Milwaukee Ave, Vernon Hills, IL, 60061. Phone: (847) 941-7600. Providers update this record themselves, so call before visiting.
How can I verify Susan M. Thomas, MD's license?
NPPES lists Illinois license number 036-107542, 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 Susan M. Thomas, MD prescribe under Medicare Part D?
In 2024, Susan M. Thomas, MD had 5,149 Medicare Part D claims for 646 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Susan M. Thomas, MD's MIPS final score?
The 2023 MIPS final score is 97.3 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.