NPI registry status
Active
2026 NPPES data Medical Oncology Physician NPI 1518970748 MD
Verify on CMS → Costas Constantinou, MD
Medical Oncology Physician in Moline, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,792 in Medical 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 · 430 beneficiaries · Medical Oncology Physician avg: 689
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Costas Constantinou, MD filed 2,083 Medicare Part D claims in 2023 as a Medical Oncology Physician in Moline, Illinois.
- 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.
Costas Constantinou, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,083 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)
Costas Constantinou, 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 Costas Constantinou, MD?
Quality data not reportedPrimary specialty
Medical Oncology Physician
Medicare Part D claims
2,083 202% vs specialty avg
Specialty distribution in Illinois
How Medical Oncology Physician compares to other specialties among Illinois 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 Medical 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).
Costas Constantinou, MD appears in the CMS NPPES registry as a Medical Oncology Physician provider holding MD credentials at 500 JOHN DEERE RD STE 102, Moline, IL, 61265, with a listed phone of (309) 779-4944. NPI 1518970748 was issued on 08/15/2006.
Medicare Part D records for calendar year 2023 show 2,083 prescription claims written by this provider, covering 430 Medicare beneficiaries and totaling roughly $4.8 million in drug spend, with an opioid prescribing rate of 7.4%.
Medical Oncology Physician is a narrow specialty nationwide, with 3,792 enrolled providers across 53 states and an average of 689 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 | 1518970748 |
|---|---|
| Specialty | Medical Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/15/2006 |
Hospital and facility affiliations
Facilities where Costas Constantinou, 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.
Trinity Medical Center
Rock Island, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Illinois IDFPR 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 ~42K Illinois medical licensees in 2023 - they are NOT specific to Costas Constantinou, MD. To verify Costas Constantinou, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR 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 Illinois 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.
2,083
Total Claims
$4.8M
Total Drug Cost
430
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,838
- Total Day Supply
- 73,651
- Generic Drug Cost
- $422K
- Opioid Claims
- 155 (7.4% rate)
- Antibiotic Claims
- 34
Patient Demographics
- Average Patient Age
- 73.3 years
- Avg HCC Risk Score
- 1.97
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 31, 65-74: 227, 75-84: 126, 85+: 46
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Costas Constantinou, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
348 claims
- Ondansetron Hcl 123
Ondansetron Hcl
123 claims
- Dexamethasone 106
Dexamethasone
106 claims
- Prochlorperazine M… 104
Prochlorperazine Maleate
104 claims
- Acyclovir 99
Acyclovir
99 claims
- Eliquis 76
Eliquis
76 claims
- Prednisone 64
Prednisone
64 claims
- Imbruvica 63
Imbruvica
63 claims
| Drug | Claims |
|---|---|
| Anastrozole | 348 |
| Ondansetron Hcl | 123 |
| Dexamethasone | 106 |
| Prochlorperazine Maleate | 104 |
| Acyclovir | 99 |
| Eliquis Apixaban | 76 |
| Prednisone | 64 |
| Imbruvica Ibrutinib | 63 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 61 |
| Gabapentin | 60 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Oncology Physician Overview
How Costas Constantinou, MD fits within the Medical Oncology Physician landscape nationally.
3,792
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
689
Avg Claims per Provider
Costas Constantinou, MD's 2,083 claims are above the specialty average of 689.
Nearby Medical Oncology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Constantinou.
Ahmad Abu-Hashyeh
Moline, IL
Dr. Matthew Adess
MD
Highland Park, IL
Dr. Syed Ahmed
MD
Oak Brook, IL
Dr. Vasia Ahmed
M.D.
Tinley Park, IL
Dr. Eugene Ahn
M.D.
Chicago, IL
Compare Medical 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical 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 Costas Constantinou, MD's specialty? ▼
Costas Constantinou, MD specializes in Medical Oncology Physician and practices in Moline, Illinois. Credentials: MD.
How much does Costas Constantinou, MD prescribe under Medicare Part D? ▼
In 2023, Costas Constantinou, MD wrote 2,083 Medicare Part D claims totaling $4.8M in drug costs for 430 beneficiaries.
Where is Costas Constantinou, MD located? ▼
Costas Constantinou, MD is located at 500 JOHN DEERE RD STE 102, Moline, IL, 61265. Phone: (309) 779-4944.
What is Costas Constantinou, MD's NPI number? ▼
Costas Constantinou, MD's National Provider Identifier (NPI) is 1518970748, issued on 08/15/2006.
Does Costas Constantinou, MD prescribe opioids? ▼
Yes, Costas Constantinou, MD had 155 opioid claims in 2023 with an opioid prescribing rate of 7.4%.
How many Medical Oncology Physician providers are there in the US? ▼
There are 3,792 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 689 Medicare Part D claims per year.
What drugs does Costas Constantinou, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Costas Constantinou, MD's most frequently prescribed drugs include Anastrozole, Ondansetron Hcl, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Costas Constantinou, MD accept Medicare? ▼
Costas Constantinou, MD appears in CMS Medicare data with 2,083 Part D claims and 430 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Costas Constantinou, MD's credentials? ▼
Costas Constantinou, MD's NPI is 1518970748 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.