Georg Gussak, MD, MSC
Internal Medicine Physician · Chicago, IL
Georg Gussak, MD, MSC is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1518548387, issued on Apr 14, 2021. Check the license (Illinois 036173725, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Georg Gussak
- Credential
- MD, MSC
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036173725 IL
125.080957 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S. Maryland Ave, Chicago, IL 60637
- Phone
- (773) 702-9461
- Enumerated
- Apr 14, 2021
- Record last updated
- Jul 6, 2025
- Fax
- (773) 702-4183
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
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Verify Georg Gussak 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 036173725Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
159 Medicare Part D claims for 47 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium19 claims
- Losartan Potassium11 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.
Georg Gussak among 7,238 internal medicine physician records in Illinois
Georg Gussak, MD, MSC 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 2021, is newer than 74% of them.
- NPI issued2021 · 74% of these records are older, 22% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2025 · 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).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
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- Hatim HassanChicago, IL 606371417970385
- Keiki Hinami, M.D.Chicago, IL 606371437136785
- David Liebovitz, MDChicago, IL 606371972564748
- Thomas Mason, M.D.Chicago, IL 606371730114505
Common questions
What is Georg Gussak, MD, MSC's NPI number?
Georg Gussak, MD, MSC's National Provider Identifier (NPI) is 1518548387, issued on Apr 14, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Georg Gussak, MD, MSC located?
The NPPES record lists a practice address at 5841 S. Maryland Ave, Chicago, IL, 60637. Phone: (773) 702-9461. Providers update this record themselves, so call before visiting.
How can I verify Georg Gussak, MD, MSC's license?
NPPES lists Illinois license number 036173725, 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 Georg Gussak, MD, MSC prescribe under Medicare Part D?
In 2024, Georg Gussak, MD, MSC had 159 Medicare Part D claims for 47 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.