Glenn Liu, MD
NPI 1629039078 · Medical Oncology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Glenn Liu, MD is a Medical Oncology Physician provider in Madison, WI (NPI 1629039078).
Provider details
- NPI number
- 1629039078
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 40193 (WI)
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
20 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
412 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 | 201 | $90 |
| 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 | 156 | $15 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 37 | $9 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 18 | $120 |
Typical Medicare-allowed amounts for these services range $9–$120 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 141 | 44 |
| Abiraterone Acetate | 98 | 18 |
| Darolutamidebrand: Nubeqa | 38 | — |
| Enzalutamidebrand: Xtandi | 29 | — |
| Bicalutamide | 20 | — |
| Dexamethasone | 14 | — |
| Cabozantinib S-Malatebrand: Cabometyx | 13 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$137 across 1 record (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
- 2006-03-28
- Last updated
- 2009-03-04
Frequently asked questions
- What is Glenn Liu's NPI number?
- Glenn Liu's National Provider Identifier (NPI) is 1629039078, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Glenn Liu's specialty?
- Glenn Liu is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Glenn Liu located?
- Glenn Liu's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792.
- What is Glenn Liu's phone number?
- The practice phone number listed in the NPPES registry for Glenn Liu is (608) 265-1700.
- Does Glenn Liu accept Medicare?
- Glenn Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Glenn Liu's NPI active?
- Yes — Glenn Liu's NPI (1629039078) is active in the NPPES registry as of the last update on 2009-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.