Doctor profile · Federal record
Dr. Tosan Fregene, M.D.
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Oak Park, MI
- NPI 1336189513
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
20770 Greenfield RD, Ste A
Oak Park, MI 482373018
(249) 967-8800
fax (248) 967-0035 - Mailing address
-
Po Box 47369
Oak Park, MI 482375069
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- December 19, 2007
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- Michigan #TF053107
- Medicaid
- MI #3173875
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336189513. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,279
Distinct HCPCS
5
Medicare allowed
$105,953
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 375 | 95 | $51 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 362 | 75 | $81 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 325 | 106 | $85 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 181 | 132 | $133 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 36 | 36 | $161 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 255. This provider delivers 5.0× the peer median.Open Payments
Industry payments received
All-time total
$173
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Inari Medical, Inc. | 1 | $173.49 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
611
Patients
42
Total drug cost
$2,097,367
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Anastrozole | Generic | 128 | 31 | $6,880 |
| Oxycodone Hcl | Generic | 85 | 0 | $3,105 |
| Ondansetron Hcl | Generic | 61 | 11 | $530 |
| Imbruvica (Ibrutinib) | Brand | 51 | 0 | $835,798 |
| Tamoxifen Citrate | Generic | 39 | 0 | $1,539 |
| Lenalidomide | Generic | 36 | 0 | $559,601 |
| Oxymorphone Hcl Er (Oxymorphone Hcl) | Brand | 34 | 0 | $55,842 |
| Hydroxyurea | Generic | 33 | 0 | $1,881 |
| Dexamethasone | Generic | 30 | 0 | $575 |
| Oxycontin (Oxycodone Hcl) | Brand | 27 | 0 | $62,512 |
Hospital affiliations
Frequently asked questions
What is Dr. Tosan Fregene's medical specialty?
Dr. Tosan Fregene practices Hematology & Oncology Physician in Oak Park, MI.
Where does Dr. Tosan Fregene practice?
Dr. Tosan Fregene practices at 20770 Greenfield RD, Oak Park, MI 482373018. Office phone: 2499678800.
What is Dr. Tosan Fregene's NPI?
Dr. Tosan Fregene's National Provider Identifier (NPI) is 1336189513, issued by NPPES.
Does Dr. Tosan Fregene accept Medicare assignment?
Yes. Dr. Tosan Fregene accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tosan Fregene commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.