Basem William, MD
NPI 1952416505 · Hematology & Oncology Physician · Marion, OH
Enrolled with Medicare as Practitioner - Hematopoietic Cell Transplantation and Cellular Therapy · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Basem William, MD is a Hematology & Oncology Physician provider in Marion, OH (NPI 1952416505).
Provider details
- NPI number
- 1952416505
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 016881 (ME)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
326 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 139 | $117 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 130 | $125 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 35 | $217 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 22 | $170 |
Typical Medicare-allowed amounts for these services range $117–$217 (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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 42 | 16 |
| Zanubrutinibbrand: Brukinsa | 30 | — |
| Levothyroxine Sodium | 27 | — |
| Prednisone | 20 | — |
| Entecavir | 17 | — |
| Bexarotene | 15 | — |
| Prochlorperazine Maleate | 15 | — |
| Momelotinib Dihydrochloride |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,108 across 13 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
Additional practice locations (1)
- 460 W 10th AveColumbus, OH 43210-1240Phone: (614) 293-3196Fax: (614) 293-4812
Registry dates
- Enumerated
- 2006-08-21
- Last updated
- 2021-12-15
- Certified
- 2021-05-26
Frequently asked questions
- What is Basem William's NPI number?
- Basem William's National Provider Identifier (NPI) is 1952416505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Basem William's specialty?
- Basem William is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Basem William located?
- Basem William's practice location on file with NPPES is 1050 Delaware Ave, Marion, OH 43302-6416.
- What is Basem William's phone number?
- The practice phone number listed in the NPPES registry for Basem William is (740) 383-7830.
- Does Basem William accept Medicare?
- Basem William is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Basem William's NPI active?
- Yes — Basem William's NPI (1952416505) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.