Bassem Chaar, M.D.
NPI 1497783179 · Hematology & Oncology Physician · Chicago Ridge, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bassem Chaar, M.D. is a Hematology & Oncology Physician provider in Chicago Ridge, IL (NPI 1497783179).
Provider details
- NPI number
- 1497783179
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2002015286 (MO)
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
5,423 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 846 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 633 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 406 | $122 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 382 | $9 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 375 | $29 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 191 | 36 |
| Dexamethasone | 149 | 42 |
| Apixabanbrand: Eliquis | 145 | 34 |
| Ondansetron Hcl | 95 | 56 |
| Gabapentin | 90 | 19 |
| Prednisone | 89 | 35 |
| Lenalidomidebrand: Revlimid | 81 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$897 across 41 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
- 2006-06-29
- Last updated
- 2021-12-30
- Certified
- 2021-12-30
Frequently asked questions
- What is Bassem Chaar's NPI number?
- Bassem Chaar's National Provider Identifier (NPI) is 1497783179, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bassem Chaar's specialty?
- Bassem Chaar is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Bassem Chaar located?
- Bassem Chaar's practice location on file with NPPES is 10604 Southwest Hwy Ste 200, Chicago Ridge, IL 60415-2717.
- What is Bassem Chaar's phone number?
- The practice phone number listed in the NPPES registry for Bassem Chaar is (708) 424-9710.
- Does Bassem Chaar accept Medicare?
- Bassem Chaar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bassem Chaar's NPI active?
- Yes — Bassem Chaar's NPI (1497783179) is active in the NPPES registry as of the last update on 2021-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.