Timothy Toonen, M.D.
NPI 1770552317 · Hematology & Oncology Physician · Saint Paul, MN
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Toonen, M.D. is a Hematology & Oncology Physician provider in Saint Paul, MN (NPI 1770552317).
Provider details
- NPI number
- 1770552317
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 44618 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,885 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 234 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 223 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 214 | $10 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 146 | $89 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 124 | $16 |
| Red Blood Count Automated, With Additional Calculations |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Prednisone | 37 |
| Hydroxyurea | 29 |
| Lenalidomidebrand: Revlimid | 20 |
| Acyclovir | 19 |
| Zanubrutinibbrand: Brukinsa | 18 |
| Dexamethasone | 16 |
| Anagrelide Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-16
- Last updated
- 2012-09-20
Frequently asked questions
- What is Timothy Toonen's NPI number?
- Timothy Toonen's National Provider Identifier (NPI) is 1770552317, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Toonen's specialty?
- Timothy Toonen is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Toonen located?
- Timothy Toonen's practice location on file with NPPES is 345 Sherman St, Saint Paul, MN 55102-2401.
- What is Timothy Toonen's phone number?
- The practice phone number listed in the NPPES registry for Timothy Toonen is (651) 251-5500.
- Does Timothy Toonen accept Medicare?
- Timothy Toonen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Toonen's NPI active?
- Yes — Timothy Toonen's NPI (1770552317) is active in the NPPES registry as of the last update on 2012-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.