Koen Van Besien, M.D.
NPI 1073525598 · Hematology & Oncology Physician · Cleveland, OH
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Koen Van Besien, M.D. is a Hematology & Oncology Physician provider in Cleveland, OH (NPI 1073525598).
Provider details
- NPI number
- 1073525598
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 60 263531 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
286 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 162 | $137 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 83 | $111 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 28 | $92 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 13 | $108 |
Typical Medicare-allowed amounts for these services range $92–$137 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lenalidomide | 59 | — |
| Acyclovir | 49 | 22 |
| Lenalidomidebrand: Revlimid | 31 | 11 |
| Ixazomib Citratebrand: Ninlaro | 25 | — |
| Apixabanbrand: Eliquis | 15 | — |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 14 | — |
| Tacrolimus | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$13,092 across 18 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-13
- Last updated
- 2023-10-09
- Certified
- 2023-10-09
Frequently asked questions
- What is Koen Van Besien's NPI number?
- Koen Van Besien's National Provider Identifier (NPI) is 1073525598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Koen Van Besien's specialty?
- Koen Van Besien is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Koen Van Besien located?
- Koen Van Besien's practice location on file with NPPES is 11100 Euclid Ave, Cleveland, OH 44106-1716.
- What is Koen Van Besien's phone number?
- The practice phone number listed in the NPPES registry for Koen Van Besien is (216) 844-0139.
- Does Koen Van Besien accept Medicare?
- Koen Van Besien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Koen Van Besien's NPI active?
- Yes — Koen Van Besien's NPI (1073525598) is active in the NPPES registry as of the last update on 2023-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.