Warren Banta, MD
NPI 1861695678 · Hematology & Oncology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Warren Banta, MD is a Hematology & Oncology Physician provider in Los Angeles, CA (NPI 1861695678).
Provider details
- NPI number
- 1861695678
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A88514 (CA)
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
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
73 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 50 | $89 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 23 | $93 |
Typical Medicare-allowed amounts for these services range $89–$93 (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 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 451 | 126 |
| Ondansetron Hcl | 186 | 108 |
| Epoetin Alfabrand: Procrit | 158 | 39 |
| Hydroxyurea | 128 | 31 |
| Prochlorperazine Maleate | 110 | 70 |
| Prednisone | 99 | 26 |
| Filgrastim-Sndzbrand: Zarxio | 86 | 29 |
| Tamoxifen Citrate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$6,351 across 246 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
- 2007-06-08
- Last updated
- 2010-01-06
Frequently asked questions
- What is Warren Banta's NPI number?
- Warren Banta's National Provider Identifier (NPI) is 1861695678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Banta's specialty?
- Warren Banta is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Warren Banta located?
- Warren Banta's practice location on file with NPPES is 1700 E Cesar E Chavez Ave, Los Angeles, CA 90033-2424.
- What is Warren Banta's phone number?
- The practice phone number listed in the NPPES registry for Warren Banta is (323) 264-0430.
- Does Warren Banta accept Medicare?
- Warren Banta is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Warren Banta's NPI active?
- Yes — Warren Banta's NPI (1861695678) is active in the NPPES registry as of the last update on 2010-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.