M.bassel Atassi, M.D.
NPI 1689876328 · Hematology & Oncology Physician · Evergreen Park, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
M.bassel Atassi, M.D. is a Hematology & Oncology Physician provider in Evergreen Park, IL (NPI 1689876328).
Provider details
- NPI number
- 1689876328
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
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
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,114 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 496 | $100 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 126 | $81 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 100 | $51 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 89 | $136 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 78 | $149 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 96 | 29 |
| Prochlorperazine Maleate | 80 | 52 |
| Abiraterone Acetate | 79 | — |
| Ondansetron Hcl | 75 | 49 |
| Prednisone | 72 | 17 |
| Lenalidomidebrand: Revlimid | 71 | — |
| Rivaroxabanbrand: Xarelto | 64 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$303 across 7 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
- 2007-06-04
- Last updated
- 2014-06-23
Frequently asked questions
- What is M.bassel Atassi's NPI number?
- M.bassel Atassi's National Provider Identifier (NPI) is 1689876328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is M.bassel Atassi's specialty?
- M.bassel Atassi is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is M.bassel Atassi located?
- M.bassel Atassi's practice location on file with NPPES is 2800 W 95th St, Evergreen Park, IL 60805-2701.
- What is M.bassel Atassi's phone number?
- The practice phone number listed in the NPPES registry for M.bassel Atassi is (708) 229-6020.
- Does M.bassel Atassi accept Medicare?
- M.bassel Atassi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is M.bassel Atassi's NPI active?
- Yes — M.bassel Atassi's NPI (1689876328) is active in the NPPES registry as of the last update on 2014-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.