Quick answers
- Which hospitals does Adedayo A. Onitilo work at?
- Medicare's official clinician data lists Adedayo A. Onitilo at 4 hospitals: Flambeau Hospital, Marshfield Medical Center, Marshfield Medical Center - Minocqua and Marshfield Medical Center - Weston. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Adedayo A. Onitilo see patients?
- Medicare's clinician data lists 7 practice locations, including Marshfield, WI, Hayward, WI and Merrill, WI. Call before your visit to confirm the address.
- What is Adedayo A. Onitilo's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Adedayo A. Onitilo accept Medicare assignment?
- Yes. Medicare's clinician data says Adedayo A. Onitilo accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Adedayo A. Onitilo offer telehealth?
- Medicare's clinician data says Adedayo A. Onitilo offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Adedayo A. Onitilo?
- (715) 387-5511, as listed in official Medicare / NPI Registry data.
- What is Adedayo A. Onitilo's NPI number?
- 1275631566. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Adedayo A. Onitilo works
Medicare's Facility Affiliation Data lists Adedayo A. Onitilo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Flambeau HospitalPark Falls, WI · Critical Access Hospital · CCN 521325
- Marshfield Medical CenterMarshfield, WI · Acute Care Hospital · CCN 520037
- Marshfield Medical Center - MinocquaMinocqua, WI · Acute Care Hospital · CCN 520212
- Marshfield Medical Center - WestonWeston, WI · Acute Care Hospital · CCN 520202
Practice locations
Addresses where Adedayo A. Onitilo is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1000 N Oak AveMarshfield, WI 54449 (715) 387‑5511
- 10212 N Greenwood LnHayward, WI 54843 (715) 634‑6520
- 1205 O Day StMerrill, WI 54452 (715) 539‑0101
- 1207 O Day StMerrill, WI 54452 (715) 539‑9990
- 2727 Plaza DrWausau, WI 54401 (715) 847‑3000
Group practices
Medicare enrollment lists Adedayo A. Onitilo as a member of these groups (CMS data updated 2026-10-02).
- MCHS Hospitals Inc1,197 clinicians in the group
- Lakeview Medical Center Inc of Rice Lake168 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Marshfield
Clinicians with the same Medicare primary specialty in Marshfield, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1275631566 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians