Jonathan T. Nassos, M.D.
Orthopaedic Surgery Physician · Chicago, IL
Jonathan T. Nassos, M.D. is an orthopaedic surgery physician with a practice address in Chicago, Illinois, and NPI 1770761934, issued on Feb 8, 2008. Check the license (Illinois 036114903, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Jonathan T. Nassos
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 036114903 IL
Self-reported in NPPES; status is on the state search - Practice location
- 6374 N Lincoln Ave, Chicago, IL 60659
- Phone
- (773) 463-2377
- Enumerated
- Feb 8, 2008
- Record last updated
- Oct 23, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120918000796); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 995 in Illinois → Look up another NPI →
Also registered at 6374 N Lincoln Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jonathan T. Nassos 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 036114903Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
69 Medicare Part D claims for 22 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 19 claims were for opioids.
Most prescribed
- Meloxicam20 claims
- Hydrocodone-Acetaminophen16 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.
Jonathan T. Nassos among 995 orthopaedic surgery physician records in Illinois
Jonathan T. Nassos, M.D. is one of 995 orthopaedic surgery physician records with a practice address in Illinois. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 57% of them.
- NPI issued2008 · 57% of these records are older, 38% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2003 · median 2001 among the 556 with a school on file
- Record last updated2008 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Illinois
There are 995 orthopaedic surgery physician records in Illinois.
All 995 in Illinois → Every provider in Chicago → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Jennifer Connor, MDChicago, IL 606591609070127
- Roberto Levi, MDChicago, IL 606591083616346
- Gabriel Levi, MDChicago, IL 606591922284603
- G. Miller, M.D.Chicago, IL 606591568436145
- Akhil AndrewsChicago, IL 606571770978553
- Sujal Desai, D.OChicago, IL 606571215036330
- Charles Mercier, MDChicago, IL 606571457320749
- Cindy NahhasChicago, IL 606571104454370
Common questions
What is Jonathan T. Nassos, M.D.'s NPI number?
Jonathan T. Nassos, M.D.'s National Provider Identifier (NPI) is 1770761934, issued on Feb 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan T. Nassos, M.D. located?
The NPPES record lists a practice address at 6374 N Lincoln Ave, Chicago, IL, 60659. Phone: (773) 463-2377. Providers update this record themselves, so call before visiting.
How can I verify Jonathan T. Nassos, M.D.'s license?
NPPES lists Illinois license number 036114903, 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 Jonathan T. Nassos, M.D. prescribe under Medicare Part D?
In 2024, Jonathan T. Nassos, M.D. had 69 Medicare Part D claims for 22 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.