NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1285601435 MD
Verify on CMS → Oscar Signori, MD
Hematology & Oncology Physician in Dearborn, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 11,232 in Hematology & Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 377 beneficiaries · Hematology & Oncology Physician avg: 847
Industry payments
$1.1K
43 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Oscar Signori, MD filed 1,969 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in Dearborn, Michigan.
- 2K
- Part D claims, 2023
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Oscar Signori, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,969 Top 16% higher than 84% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Oscar Signori, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Oscar Signori, MD?
Quality data not reportedPrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
1,969 132% vs specialty avg
Specialty distribution in Michigan
How Hematology & Oncology Physician compares to other specialties among Michigan providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hematology & Oncology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Oscar Signori, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 18800 HUBBARD DR, Dearborn, MI, 48126, with a listed phone of (313) 576-9182. NPI 1285601435 was issued on 03/07/2006.
Medicare Part D records for calendar year 2023 show 1,969 prescription claims written by this provider, covering 377 Medicare beneficiaries and totaling roughly $3.9 million in drug spend, with an opioid prescribing rate of 4.4%.
Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,232 enrolled providers across 54 states and an average of 847 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1285601435 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/07/2006 |
Hospital and facility affiliations
Facilities where Oscar Signori, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Barbara Ann Karmanos Cancer Institute
Southfield, MI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Oscar Signori, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.1K
Largest payer
Astellas Pharma US Inc
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Michigan MI-BOM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 - they are NOT specific to Oscar Signori, MD. To verify Oscar Signori, MD's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases
MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,969
Total Claims
$3.9M
Total Drug Cost
377
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,371
- Total Day Supply
- 91,909
- Generic Drug Cost
- $220K
- Opioid Claims
- 86 (4.4% rate)
- Antibiotic Claims
- 121
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.81
- Gender Split
- 71% female / 29% male
- Age Distribution
- <65: 41, 65-74: 183, 75-84: 113, 85+: 40
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Oscar Signori, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
194 claims
- Letrozole
Letrozole
176 claims
- Allopurinol
Allopurinol
106 claims
- Omeprazole 66
Omeprazole
66 claims
- Acyclovir 65
Acyclovir
65 claims
- Tamoxifen Citrate 63
Tamoxifen Citrate
63 claims
- Prednisone 57
Prednisone
57 claims
- Hydroxyurea 51
Hydroxyurea
51 claims
| Drug | Claims |
|---|---|
| Anastrozole | 194 |
| Letrozole | 176 |
| Allopurinol | 106 |
| Omeprazole | 66 |
| Acyclovir | 65 |
| Tamoxifen Citrate | 63 |
| Prednisone | 57 |
| Hydroxyurea | 51 |
| Ondansetron Hcl | 48 |
| Prochlorperazine Maleate | 48 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hematology & Oncology Physician Overview
How Oscar Signori, MD fits within the Hematology & Oncology Physician landscape nationally.
11,232
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider
Oscar Signori, MD's 1,969 claims are above the specialty average of 847.
Nearby Hematology & Oncology Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Signori.
Dr. Ahmed Abdel-Maksoud
MD
Midland, MI
Dr. Jonathan Abramson
M. D.
Bay City, MI
Dr. Calvin Abro
MD
Battle Creek, MI
Lindsey Ackerman
Sterling Heights, MI
Dr. Paul Adams
M.D.
Flint, MI
Compare Hematology & Oncology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Michigan medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hematology & Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Oscar Signori, MD's specialty? ▼
Oscar Signori, MD specializes in Hematology & Oncology Physician and practices in Dearborn, Michigan. Credentials: MD.
How much does Oscar Signori, MD prescribe under Medicare Part D? ▼
In 2023, Oscar Signori, MD wrote 1,969 Medicare Part D claims totaling $3.9M in drug costs for 377 beneficiaries.
Where is Oscar Signori, MD located? ▼
Oscar Signori, MD is located at 18800 HUBBARD DR, Dearborn, MI, 48126. Phone: (313) 576-9182.
What is Oscar Signori, MD's NPI number? ▼
Oscar Signori, MD's National Provider Identifier (NPI) is 1285601435, issued on 03/07/2006.
Does Oscar Signori, MD prescribe opioids? ▼
Yes, Oscar Signori, MD had 86 opioid claims in 2023 with an opioid prescribing rate of 4.4%.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,232 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Oscar Signori, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Oscar Signori, MD's most frequently prescribed drugs include Anastrozole, Letrozole, Allopurinol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Oscar Signori, MD accept Medicare? ▼
Oscar Signori, MD appears in CMS Medicare data with 1,969 Part D claims and 377 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Oscar Signori, MD's credentials? ▼
Oscar Signori, MD's NPI is 1285601435 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.