Thomas Westbrook, MD
NPI 1346760493 · Medical Oncology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Westbrook, MD is a Medical Oncology Physician provider in Chicago, IL (NPI 1346760493).
Provider details
- NPI number
- 1346760493
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2017019536 (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
9 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
373 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 | 180 | $148 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 67 | $187 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 50 | $99 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 36 | $189 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 29 | $132 |
| 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'S |
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 |
|---|---|---|
| Prednisone | 147 | 36 |
| Darolutamidebrand: Nubeqa | 91 | 19 |
| Enzalutamidebrand: Xtandi | 85 | 14 |
| Abiraterone Acetate | 63 | 15 |
| Ondansetron Hcl | 44 | 35 |
| Relugolixbrand: Orgovyx | 37 | 11 |
| Lenvatinib Mesylatebrand: Lenvima | 22 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$917 across 2 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
- 2017-06-20
- Last updated
- 2023-09-13
- Certified
- 2023-09-13
Frequently asked questions
- What is Thomas Westbrook's NPI number?
- Thomas Westbrook's National Provider Identifier (NPI) is 1346760493, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Westbrook's specialty?
- Thomas Westbrook is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Westbrook located?
- Thomas Westbrook's practice location on file with NPPES is 1520 W Harrison St, Chicago, IL 60607-3106.
- What is Thomas Westbrook's phone number?
- The practice phone number listed in the NPPES registry for Thomas Westbrook is (312) 226-2371.
- Does Thomas Westbrook accept Medicare?
- Thomas Westbrook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Westbrook's NPI active?
- Yes — Thomas Westbrook's NPI (1346760493) is active in the NPPES registry as of the last update on 2023-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.