Ryan Zitter, MD, MSC
Radiation Oncology Physician · Chicago, IL
Ryan Zitter, MD, MSC is a radiation oncology physician with a practice address in Chicago, Illinois, and NPI 1962105031, issued on Mar 27, 2023. Check the license (Illinois 125082098, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ryan Zitter
- Credential
- MD, MSC
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 125082098 IL
125.082098 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S Maryland Ave # MC9006, Chicago, IL 60637
- Phone
- (773) 702-0817
- Enumerated
- Mar 27, 2023
- Record last updated
- Jun 27, 2024
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 277 in Illinois → Look up another NPI →
Also registered at 5841 S Maryland Ave # MC9006
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Chad Caraway, MDRadiation Oncology Physician1306647243
- Michael Gutman, MDRadiation Oncology Physician1326622937
- Daniel Huang, MDRadiation Oncology Physician1619543964
- Aditya Juloori, MDRadiation Oncology Physician1952714636
- Sophia Kim-Wang, MD, PHDRadiation Oncology Physician1205531092
Verify Ryan Zitter 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 125082098Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average radiation oncology physician in 2024
18 Medicare Part D claims for 12 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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.
Ryan Zitter among 277 radiation oncology physician records in Illinois
Ryan Zitter, MD, MSC is one of 277 radiation oncology physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 95% of them.
- NPI issued2023 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Illinois
There are 277 radiation oncology physician records in Illinois.
All 277 in Illinois → Every provider in Chicago → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Azhar AwanChicago, IL 606371497829725
- Steven ChmuraChicago, IL 606371629137161
- Philip ConnellChicago, IL 606371538228077
- Howard HalpernChicago, IL 606371447319983
- Daniel HarafChicago, IL 606371356400899
- Yasmin HasanChicago, IL 606371194939744
- Andrew HowardChicago, IL 606371942252432
- Matthew Koshy, MDChicago, IL 606371568506103
Common questions
What is Ryan Zitter, MD, MSC's NPI number?
Ryan Zitter, MD, MSC's National Provider Identifier (NPI) is 1962105031, issued on Mar 27, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Zitter, MD, MSC located?
The NPPES record lists a practice address at 5841 S Maryland Ave # MC9006, Chicago, IL, 60637. Phone: (773) 702-0817. Providers update this record themselves, so call before visiting.
How can I verify Ryan Zitter, MD, MSC's license?
NPPES lists Illinois license number 125082098, 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 Ryan Zitter, MD, MSC prescribe under Medicare Part D?
In 2024, Ryan Zitter, MD, MSC had 18 Medicare Part D claims for 12 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.