Usman Zaheer, DO
NPI 1104319383 · Hematology & Oncology Physician · Romeoville, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Usman Zaheer, DO is a Hematology & Oncology Physician provider in Romeoville, IL (NPI 1104319383).
Provider details
- NPI number
- 1104319383
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 036170030 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 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
297 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 35 Minutes99232 | 91 | $80 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 70 | $121 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 56 | $146 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 44 | $176 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 25 | $98 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
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 |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 35 | 26 |
| Apixabanbrand: Eliquis | 32 | 17 |
| Prednisone | 27 | — |
| Anastrozole | 23 | — |
| Letrozole | 21 | — |
| Acyclovir | 19 | — |
| Morphine Sulfatebrand: Morphine Sulfate Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,353 across 62 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
- 2018-06-12
- Last updated
- 2024-07-10
- Certified
- 2024-04-07
Frequently asked questions
- What is Usman Zaheer's NPI number?
- Usman Zaheer's National Provider Identifier (NPI) is 1104319383, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Usman Zaheer's specialty?
- Usman Zaheer is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Usman Zaheer located?
- Usman Zaheer's practice location on file with NPPES is 500 S Weber Rd, Romeoville, IL 60446-6528.
- What is Usman Zaheer's phone number?
- The practice phone number listed in the NPPES registry for Usman Zaheer is (815) 773-7732.
- Does Usman Zaheer accept Medicare?
- Usman Zaheer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Usman Zaheer's NPI active?
- Yes — Usman Zaheer's NPI (1104319383) is active in the NPPES registry as of the last update on 2024-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.