Gerald Simon, MD
Internal Medicine Physician · Countryside, IL
Gerald Simon, MD is an internal medicine physician with a practice address in Countryside, Illinois, and NPI 1861450330, issued on May 3, 2006. Check the license (Illinois 036066840, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Gerald Simon
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036066840 IL
36066840 IL
Self-reported in NPPES; status is on the state search - Practice location
- 6438 Joliet RD Ste 203, Countryside, IL 60525
- Phone
- (708) 352-5222
- Enumerated
- May 3, 2006
- Record last updated
- Feb 1, 2023
- Fax
- (708) 352-1576
- Medicare enrollment
- Enrolled (PECOS I20050113000331); may accept Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1982
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Verify Gerald Simon 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 036066840Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.6 times the Medicare Part D claims of the average internal medicine physician in 2024
14,498 Medicare Part D claims for 845 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 260 claims were for opioids.
Most prescribed
- Atorvastatin Calcium798 claims
- Levothyroxine Sodium548 claims
- Eliquis539 claims
- Amlodipine Besylate457 claims
- Metoprolol Tartrate395 claims
- Furosemide386 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.
Industry payments in 2024: $1,091.56
55 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Nani Internal Med LLCDowners Grove, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerald Simon among 7,238 internal medicine physician records in Illinois
Gerald Simon, 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
- Graduated1982 · median 2003 among the 3,580 with a school on file
- Record last updated2023 · 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).
Internal Medicine Physician providers in Illinois
There are 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Countryside → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kisti Catalano, M.D.La Grange, IL 605251710015664
- Nasreen Hamidani, M.D.La Grange Highlands, IL 605251851483812
- Andrea Krasinski, MDLa Grange, IL 605251194874248
- Ronald McQuigg, MDLa Grange, IL 605251326241514
- Robert Passovoy, MDLa Grange, IL 605251841229408
- Jason Rice, M.D.La Grange, IL 605251093036931
- Haissam Sabbagh, MDLa Grange, IL 605251194836924
- Sarah Siddiqui, D.O.La Grange Highlands, IL 605251982847026
Common questions
What is Gerald Simon, MD's NPI number?
Gerald Simon, MD's National Provider Identifier (NPI) is 1861450330, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Simon, MD located?
The NPPES record lists a practice address at 6438 Joliet RD Ste 203, Countryside, IL, 60525. Phone: (708) 352-5222. Providers update this record themselves, so call before visiting.
How can I verify Gerald Simon, MD's license?
NPPES lists Illinois license number 036066840, 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 Gerald Simon, MD prescribe under Medicare Part D?
In 2024, Gerald Simon, MD had 14,498 Medicare Part D claims for 845 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.