Dr. Tosan A. Fregene
- Gender: Male
- Experience: 36 years
- Graduation year: 1985
- Sole propriator: No
- NPI: 1336189513
Dr. Tosan A. Fregene M.D.
Medical Toxicologist
He is located at 20770 Greenfield Road Ste A in Oak Park, MI 48237. Can help patients with the following: Alcoholism, Arsenic Poisoning, Ciguatera Poisoning, Drug Overdose, Mercury Poisoning, Methemoglobinemia. His National Provider Identifier (NPI) number is 1336189513. Appointment can be made via the phone number (249) 967-8800. He is affiliated with 5 hospitals.
Conditions treated
Dr. Tosan A. Fregene, being an medical toxicologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Tosan A. Fregene.
- Alcoholism
- Arsenic Poisoning
- Ciguatera Poisoning
- Drug Overdose
- Fetal Alcohol Syndrome (FAS)
- Lead Poisoning
- Mercury Poisoning
- Methemoglobinemia
Procedures Performed by Dr. Tosan A. Fregene
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Tosan A. Fregene as in-network for the following 2026 plans.
Health plans
Ambetter from Meridian
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 9 plans from Ambetter from Meridian
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Clear Silver | HMO · Silver | Preferred | Accepting new patients |
| Elite Gold | HMO · Gold | Preferred | Accepting new patients |
| Elite Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Everyday Gold | HMO · Gold | Preferred | Accepting new patients |
| Everyday Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Standard Gold | HMO · Gold | Preferred | Accepting new patients |
| Standard Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Standard Silver | HMO · Silver | Preferred | Accepting new patients |
| Standard Silver + Vision + Adult Dental | HMO · Silver | Preferred | Accepting new patients |
Blue Care Network of Michigan
Network data as of Jun 5, 2026, as reported by the insurer.
Show all 16 plans from Blue Care Network of Michigan
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Cross® Preferred HMO Bronze Extra | HMO · Expanded Bronze | Null | Accepting new patients |
| Blue Cross® Preferred HMO Bronze Saver HSA | HMO · Expanded Bronze | Null | Accepting new patients |
| Blue Cross® Preferred HMO Bronze Secure | HMO · Bronze | Null | Accepting new patients |
| Blue Cross® Preferred HMO Gold | HMO · Gold | Null | Accepting new patients |
| Blue Cross® Preferred HMO Gold Extra | HMO · Gold | Null | Accepting new patients |
| Blue Cross® Preferred HMO Silver | HMO · Silver | Null | Accepting new patients |
| Blue Cross® Preferred HMO Silver Extra | HMO · Silver | Null | Accepting new patients |
| Blue Cross® Preferred HMO Silver Saver | HMO · Silver | Null | Accepting new patients |
| Blue Cross® Preferred HMO Value | HMO · Catastrophic | Null | Accepting new patients |
| Blue Cross® Select HMO Bronze Extra | HMO · Expanded Bronze | Null | Accepting new patients |
| Blue Cross® Select HMO Bronze Saver HSA | HMO · Expanded Bronze | Null | Accepting new patients |
| Blue Cross® Select HMO Bronze Secure | HMO · Bronze | Null | Accepting new patients |
| Blue Cross® Select HMO Silver | HMO · Silver | Null | Accepting new patients |
| Blue Cross® Select HMO Silver Extra | HMO · Silver | Null | Accepting new patients |
| Blue Cross® Select HMO Silver Saver | HMO · Silver | Null | Accepting new patients |
| Blue Cross® Select HMO Value | HMO · Catastrophic | Null | Accepting new patients |
Blue Cross Blue Shield of Michigan Mutual Insurance Company
Network data as of Jun 5, 2026, as reported by the insurer.
Show all 9 plans from Blue Cross Blue Shield of Michigan Mutual Insurance Company
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Cross® Premier PPO Bronze Extra | PPO · Expanded Bronze | Null | Accepting new patients |
| Blue Cross® Premier PPO Bronze Saver HSA | PPO · Expanded Bronze | Null | Accepting new patients |
| Blue Cross® Premier PPO Bronze Secure | PPO · Bronze | Null | Accepting new patients |
| Blue Cross® Premier PPO Gold | PPO · Gold | Null | Accepting new patients |
| Blue Cross® Premier PPO Gold Extra | PPO · Gold | Null | Accepting new patients |
| Blue Cross® Premier PPO Silver | PPO · Silver | Null | Accepting new patients |
| Blue Cross® Premier PPO Silver Extra | PPO · Silver | Null | Accepting new patients |
| Blue Cross® Premier PPO Silver Saver HSA | PPO · Silver | Null | Accepting new patients |
| Blue Cross® Premier PPO Value | PPO · Catastrophic | Null | Accepting new patients |
Priority Health
Network data as of Aug 26, 2026, as reported by the insurer.
Show all 9 plans from Priority Health
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| MyPriority Balanced Silver | HMO · Silver | Mypriority HMO | Accepting new patients |
| MyPriority Premier Silver | HMO · Silver | Mypriority HMO | Accepting new patients |
| MyPriority Standard Bronze | HMO · Expanded Bronze | Mypriority HMO | Accepting new patients |
| MyPriority Standard Bronze - Travel | HMO · Expanded Bronze | Mypriority HMO | Accepting new patients |
| MyPriority Standard Gold | HMO · Gold | Mypriority HMO | Accepting new patients |
| MyPriority Standard Silver | HMO · Silver | Mypriority HMO | Accepting new patients |
| MyPriority Standard Silver - Travel | HMO · Silver | Mypriority HMO | Accepting new patients |
| MyPriority Value Bronze | HMO · Expanded Bronze | Mypriority HMO | Accepting new patients |
| MyPriority Value Bronze HSA | HMO · Expanded Bronze | Mypriority HMO | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Tosan A. Fregene is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Tosan A. Fregene is enrolled to bill Medicare as a Practitioner - Hematology/oncology (also registered under: Practitioner - Hospice/palliative Care) .
Bills through: Oncology Clinics Inc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Alexion Pharmaceuticals | $1464 |
| Incyte | $500 |
| Genentech | $263 |
Other
| Food and Beverage | $1902 |
| Consulting | $1700 |
Studies
Graduated in 1985Additional Specialities
- General Practitioner
Affiliated hospitals
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Questions & Answers
What conditions does Dr. Tosan A. Fregene treat?
Dr. Tosan A. Fregene provides treatment for Alcoholism, Arsenic Poisoning, Ciguatera Poisoning, Drug Overdose, Mercury Poisoning, Methemoglobinemia. For the full list see this list.
Where can you meet with Dr. Tosan A. Fregene?
Dr. Tosan A. Fregene's office is located at 20770 Greenfield Road Ste A in Oak Park, MI 48237.
Has Dr. Tosan A. Fregene affiliation with hospitals?
Dr. Tosan A. Fregene is affiliated with ST JOHN HOSPITAL AND MEDICAL CENTER. For the full list of hospitals see this list.
Does Dr. Tosan A. Fregene accept insurance?
Dr. Tosan A. Fregene is listed in-network for 43 ACA Marketplace (Obamacare/HealthCare.gov) plans from Ambetter from Meridian, Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Priority Health. See the Marketplace plans section for details.