Tosan Fregene, M.D.
NPI 1336189513 · Hematology & Oncology Physician · Oak Park, MI
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tosan Fregene, M.D. is a Hematology & Oncology Physician provider in Oak Park, MI (NPI 1336189513).
Provider details
- NPI number
- 1336189513
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- TF053107 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,113 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 482 | $78 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 274 | $90 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 159 | $131 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 155 | $50 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 43 | $169 |
Typical Medicare-allowed amounts for these services range $50–$169 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 154 | 47 |
| Oxycodone Hcl | 80 | 11 |
| Ondansetron Hcl | 59 | 22 |
| Ibrutinibbrand: Imbruvica | 50 | — |
| Hydroxyurea | 43 | — |
| Abiraterone Acetate | 35 | — |
| Lenalidomide | 34 | — |
| Exemestane | 32 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$173 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-07
- Last updated
- 2007-12-19
Frequently asked questions
- What is Tosan Fregene's NPI number?
- Tosan Fregene's National Provider Identifier (NPI) is 1336189513, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tosan Fregene's specialty?
- Tosan Fregene is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Tosan Fregene located?
- Tosan Fregene's practice location on file with NPPES is 20770 Greenfield Rd, Oak Park, MI 48237-3018.
- What is Tosan Fregene's phone number?
- The practice phone number listed in the NPPES registry for Tosan Fregene is (249) 967-8800.
- Does Tosan Fregene accept Medicare?
- Tosan Fregene is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tosan Fregene's NPI active?
- Yes — Tosan Fregene's NPI (1336189513) is active in the NPPES registry as of the last update on 2007-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.