Michael Castro, M.D.
NPI 1306834338 · Medical Oncology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Castro, M.D. is a Medical Oncology Physician provider in Los Angeles, CA (NPI 1306834338).
Provider details
- NPI number
- 1306834338
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 174662 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
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
972 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 126 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 115 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 108 | $139 |
| Lactate Dehydrogenase (enzyme) Level83615 | 85 | $6 |
| Phosphate Level84100 | 82 | $5 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 79 | $9 |
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) |
|---|---|
| Famotidine | 34 |
| Ruxolitinib Phosphatebrand: Jakafi | 24 |
| Enzalutamidebrand: Xtandi | 22 |
| Capivasertibbrand: Truqap | 18 |
| Losartan Potassium | 17 |
| Atorvastatin Calcium | 15 |
| Leucovorin Calcium | 14 |
| Levetiracetam | 14 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$838 across 26 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
- 2005-10-13
- Last updated
- 2016-12-12
Frequently asked questions
- What is Michael Castro's NPI number?
- Michael Castro's National Provider Identifier (NPI) is 1306834338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Castro's specialty?
- Michael Castro is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Castro located?
- Michael Castro's practice location on file with NPPES is 10001 Venice Blvd Apt 402, Los Angeles, CA 90034-7439.
- What is Michael Castro's phone number?
- The practice phone number listed in the NPPES registry for Michael Castro is (808) 445-4085.
- Does Michael Castro accept Medicare?
- Michael Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Castro's NPI active?
- Yes — Michael Castro's NPI (1306834338) is active in the NPPES registry as of the last update on 2016-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.