Timothy C. Hollister, MD
Radiation Oncology Physician · Wilmette, IL
Timothy C. Hollister, MD is a radiation oncology physician with a practice address in Wilmette, Illinois, and NPI 1669528428, issued on Jan 26, 2007. Check the license (Illinois 036-104662, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Timothy C. Hollister
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 036-104662 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3201 Old Glenview RD Ste 100, Wilmette, IL 60091
- Phone
- (847) 512-1849
- Enumerated
- Jan 26, 2007
- Record last updated
- Sep 11, 2025
- Fax
- (847) 512-1850
- Medicaid ID
- 036104662 IL
- Medicare enrollment
- Enrolled (PECOS I20080707000327); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 277 in Illinois → Look up another NPI →
Verify Timothy C. Hollister 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 036-104662Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average radiation oncology physician in 2024
23 Medicare Part D claims for 13 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl14 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.
Bills Medicare through one group practice
- Metro Chicago Surgical Oncology LLCWilmette, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy C. Hollister among 277 radiation oncology physician records in Illinois
Timothy C. Hollister, MD 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 2007, is newer than 49% of them.
- NPI issued2007 · 49% of these records are older, 44% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1996 · median 2004 among the 184 with a school on file
- Record last updated2025 · 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 Wilmette → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Yoon Kim, M.D.Winnetka, IL 600931083047146
- Sung Chang, MDZion, IL 600991609853985
- Meng Gan, M.D.Zion, IL 600991649703901
- Karan Shah, M.D.Zion, IL 600991477865582
- Karen Smorowski, MDZion, IL 600991427044833
- Arica Hirsch, M.D.Park Ridge, IL 600681770574758
- Tanya Powell, M.D.Park Ridge, IL 600681043201072
- Ian Winter, MDPark Ridge, IL 600681013413285
Common questions
What is Timothy C. Hollister, MD's NPI number?
Timothy C. Hollister, MD's National Provider Identifier (NPI) is 1669528428, issued on Jan 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Timothy C. Hollister, MD located?
The NPPES record lists a practice address at 3201 Old Glenview RD Ste 100, Wilmette, IL, 60091. Phone: (847) 512-1849. Providers update this record themselves, so call before visiting.
How can I verify Timothy C. Hollister, MD's license?
NPPES lists Illinois license number 036-104662, 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 Timothy C. Hollister, MD prescribe under Medicare Part D?
In 2024, Timothy C. Hollister, MD had 23 Medicare Part D claims for 13 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.