Quick answers
- Does Oscar R. Signori accept Medicare assignment?
- Yes. Medicare's clinician data says Oscar R. Signori accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Oscar R. Signori see?
- In 2024, CMS data shows 413 Original Medicare patients and 41,576 services for Oscar R. Signori. This counts Original Medicare only and measures volume, not quality.
- What is Oscar R. Signori's NPI number?
- 1285601435. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Oscar R. Signori, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 413 |
|---|---|
| Services billed to Medicare | 41,576 |
| Different services or procedures | 77 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)839 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)440 services
- Injection, zoledronic acid, 1 mg (J3489)169 services
- Injection of drug or substance under skin or into muscle (96372)161 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)155 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)54%
- Arthritis48%
- Diabetes33%
- Ischemic heart disease30%
Hospitals where Oscar R. Signori works
Medicare's Facility Affiliation Data lists Oscar R. Signori at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Beaumont Hospital - DearbornDearborn, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230020
- Beaumont Hospital - Farmington HillsFarmington Hills, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230151
- Beaumont Hospital - TaylorTaylor, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230270
- Corewell Health Wayne HospitalWayne, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230142
- Karmanos Cancer CenterDetroit, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 230297
Practice locations
Addresses where Oscar R. Signori is enrolled with Medicare (CMS data updated October 2, 2026).
- 29201 Telegraph Rd, Suite 500Southfield, MI 48034 (800) 527‑6266
- 31995 Northwestern HwyFarmington Hills, MI 48334 (800) 527‑6266
- 4100 John R StDetroit, MI 48201 (800) 527‑6266
- 4201 Saint Antoine StDetroit, MI 48201 (800) 527‑6266
Group practices
Medicare enrollment lists Oscar R. Signori as a member of this group (CMS data updated October 2, 2026).
- Barbara Ann Karmanos Cancer Institute57 clinicians in the group
Specialties
- Medical Oncologyprimary
- Internal Medicinealso
Other oncologists in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Other clinicians in Barbara Ann Karmanos Cancer Institute
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1974 (52 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285601435 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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