Tosan A. Fregene, M.D.
Hematology & Oncology Physician · Oak Park, MI
Tosan A. Fregene, M.D. is a hematology & oncology physician with a practice address in Oak Park, Michigan, and NPI 1336189513, issued on Jun 7, 2006. Check the license (Michigan TF053107, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Tosan A. Fregene
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- TF053107 MI
Self-reported in NPPES; status is on the state search - Practice location
- 20770 Greenfield RD, Oak Park, MI 48237
- Phone
- (249) 967-8800
- Enumerated
- Jun 7, 2006
- Record last updated
- Dec 19, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (248) 967-0035
- Medicaid ID
- 3173875 MI
- Medicare enrollment
- Enrolled (PECOS I20060925000139); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 340 in Michigan → Look up another NPI →
Also registered at 20770 Greenfield RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lauren Boury, NPAcute Care Nurse Practitioner1063929552
- Abayomi Kuforiji, DPTPhysical Therapist1164562021
- Rajendra Prasad Vavilala, RPHPharmacist1710264551
Verify Tosan A. Fregene in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license TF053107Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,020 Medicare Part D claims for 140 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 192 claims were for opioids.
Most prescribed
- Anastrozole154 claims
- Oxycodone Hcl80 claims
- Ondansetron Hcl59 claims
- Imbruvica50 claims
- Hydroxyurea43 claims
- Abiraterone Acetate35 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.
Industry payments in 2024: $173.49
1 payment: food and beverage; the largest payer was Inari Medical, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ccm HealthMontevideo, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tosan A. Fregene among 340 hematology & oncology physician records in Michigan
Tosan A. Fregene, M.D. is one of 340 hematology & oncology physician records with a practice address in Michigan. 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 14% of them.
- NPI issued2006 · 14% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1985 · median 2004 among the 206 with a school on file
- Record last updated2007 · 52% 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 Michigan 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 Michigan
There are 340 hematology & oncology physician records in Michigan.
All 340 in Michigan → Every provider in Oak Park → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Nour Aldaoud, MDGrosse Pointe Woods, MI 482361578240271
- Joseph Attallah, MDGrosse Pointe Woods, MI 482361700266129
- Talal Bazzi, MDDetroit, MI 482361467030825
- Tanushree BhattGrosse Pointe Woods, MI 482361831761071
- Ani GvajaiaDetroit, MI 482361558082198
- Hosam Hakim, M.DGrosse Pointe Woods, MI 482361619228483
- Zyad Kafri, MDGrosse Pointe Woods, MI 482361083747976
- Ali Khalil, MDGrosse Pointe Woods, MI 482361164172995
Common questions
What is Tosan A. Fregene, M.D.'s NPI number?
Tosan A. Fregene, M.D.'s National Provider Identifier (NPI) is 1336189513, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tosan A. Fregene, M.D. located?
The NPPES record lists a practice address at 20770 Greenfield RD, Oak Park, MI, 48237. Phone: (249) 967-8800. Providers update this record themselves, so call before visiting.
How can I verify Tosan A. Fregene, M.D.'s license?
NPPES lists Michigan license number TF053107, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tosan A. Fregene, M.D. prescribe under Medicare Part D?
In 2024, Tosan A. Fregene, M.D. had 1,020 Medicare Part D claims for 140 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.