Timothy R. Toonen, M.D.
Hematology & Oncology Physician · Saint Paul, MN
Timothy R. Toonen, M.D. is a hematology & oncology physician with a practice address in Saint Paul, Minnesota, and NPI 1770552317, issued on Mar 16, 2006. Check the license (Minnesota 44618, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Timothy R. Toonen
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 44618 MN
Self-reported in NPPES; status is on the state search - Practice location
- 345 Sherman St, Saint Paul, MN 55102
- Phone
- (651) 251-5500
- Enumerated
- Mar 16, 2006
- Record last updated
- Sep 20, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (651) 251-5555
- Medicaid IDs
- 34196900 WI
325796700 MN - Medicare enrollment
- Enrolled (PECOS I20100916000244); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 274 in Minnesota → Look up another NPI →
Also registered at 345 Sherman St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Ducker, M.D.Medical Oncology Physician1063481190
- Kathryn Farniok, M.D.Radiation Oncology Physician1114978335
- Mark Palmer, M.D.Radiation Oncology Physician1588633838
- Sara Torgerson, D.O.Hematology & Oncology Physician1134391899
Verify Timothy R. Toonen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 44618Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
251 Medicare Part D claims for 57 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims. 12 claims were for opioids.
Most prescribed
- Prednisone37 claims
- Hydroxyurea29 claims
- Revlimid20 claims
- Acyclovir19 claims
- Brukinsa18 claims
- Dexamethasone16 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.
The MIPS final score for 2023 (Medicare payment program): 90.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Minnesota Oncology Hematology PAMaple Grove, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy R. Toonen among 274 hematology & oncology physician records in Minnesota
Timothy R. Toonen, M.D. is one of 274 hematology & oncology physician records with a practice address in Minnesota. 82% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 62% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1996 · median 2009 among the 208 with a school on file
- Record last updated2012 · 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 207RH0003X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Minnesota
There are 274 hematology & oncology physician records in Minnesota.
All 274 in Minnesota → Every provider in Saint Paul → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Charlene Fares, M.D.Saint Paul, MN 551021952795841
- Irving Lerner, M.D.Saint Paul, MN 551021356495501
- Raisa Pinto, MBBSSaint Paul, MN 551021760757892
- Sara Torgerson, D.O.Saint Paul, MN 551021134391899
- Daniel Anderson, MDSaint Paul, MN 551011710949920
- Kathryn Baxstrom, M.D.Saint Paul, MN 551011386987535
- Kurt Demel, MDSaint Paul, MN 551011760588958
- Christine Ding, M.D.Saint Paul, MN 551011487073300
Common questions
What is Timothy R. Toonen, M.D.'s NPI number?
Timothy R. Toonen, M.D.'s National Provider Identifier (NPI) is 1770552317, issued on Mar 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy R. Toonen, M.D. located?
The NPPES record lists a practice address at 345 Sherman St, Saint Paul, MN, 55102. Phone: (651) 251-5500. Providers update this record themselves, so call before visiting.
How can I verify Timothy R. Toonen, M.D.'s license?
NPPES lists Minnesota license number 44618, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Timothy R. Toonen, M.D. prescribe under Medicare Part D?
In 2024, Timothy R. Toonen, M.D. had 251 Medicare Part D claims for 57 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Timothy R. Toonen, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.