Robert Sean Dieter, MD
Internal Medicine Physician · Maywood, IL
Robert Sean Dieter, MD is an internal medicine physician with a practice address in Maywood, Illinois, and NPI 1528126067, issued on Dec 5, 2006. Check the license (Illinois 036099366, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Robert Sean Dieter
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036099366 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2160 S First Ave, Maywood, IL 60153
- Phone
- (708) 645-3400
- Enumerated
- Dec 5, 2006
- Record last updated
- Jul 28, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (708) 216-8795
- Medicare enrollment
- Enrolled (PECOS I20051213000131); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
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Verify Robert Sean Dieter 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 036099366Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
199 Medicare Part D claims for 36 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Atorvastatin Calcium51 claims
- Lisinopril17 claims
- Metoprolol Succinate16 claims
- Rosuvastatin Calcium16 claims
- Carvedilol13 claims
- Amlodipine Besylate12 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.
One hospital affiliation
- Loyola University Medical CenterMaywood, IL · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Robert Sean Dieter among 7,238 internal medicine physician records in Illinois
Robert Sean Dieter, 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
- Graduated1996 · median 2003 among the 3,580 with a school on file
- Record last updated2010 · 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).
257 internal medicine physician records list a practice address in Maywood
They are 257 of the 2,572 NPPES records with a practice address in Maywood, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Maywood → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Bradley Clifford, MDMaywood, IL 601531912971227
- Josephine Dlugopolski-Gach, MDMaywood, IL 601531679543151
- Kevin Embach, M.D.Maywood, IL 601531437151974
- Maureen Fearon, MDMaywood, IL 601531144294463
- Elizabeth Frye, MDMaywood, IL 601531295709509
- Sam Hung, MDMaywood, IL 601531750352753
Common questions
What is Robert Sean Dieter, MD's NPI number?
Robert Sean Dieter, MD's National Provider Identifier (NPI) is 1528126067, issued on Dec 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Sean Dieter, MD located?
The NPPES record lists a practice address at 2160 S First Ave, Maywood, IL, 60153. Phone: (708) 645-3400. Providers update this record themselves, so call before visiting.
How can I verify Robert Sean Dieter, MD's license?
NPPES lists Illinois license number 036099366, 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 Robert Sean Dieter, MD prescribe under Medicare Part D?
In 2024, Robert Sean Dieter, MD had 199 Medicare Part D claims for 36 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.