David Masiello, M.D.
NPI 1427277573 · Hematology & Oncology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Masiello, M.D. is a Hematology & Oncology Physician provider in Los Angeles, CA (NPI 1427277573).
Provider details
- NPI number
- 1427277573
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A94680 (CA)
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
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
142 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 | 51 | $96 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $135 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 25 | $94 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 23 | $132 |
Typical Medicare-allowed amounts for these services range $94–$135 (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 · 49 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 370 | 113 |
| Hydroxyurea | 108 | 25 |
| Ondansetron Hcl | 80 | 52 |
| Dexamethasone | 78 | 21 |
| Epoetin Alfabrand: Procrit | 73 | 20 |
| Relugolixbrand: Orgovyx | 72 | — |
| Acalabrutinib Maleatebrand: Calquence | 55 | — |
| Enzalutamidebrand: Xtandi |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,817 across 179 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
- 2007-04-25
- Last updated
- 2014-12-22
Frequently asked questions
- What is David Masiello's NPI number?
- David Masiello's National Provider Identifier (NPI) is 1427277573, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Masiello's specialty?
- David Masiello is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is David Masiello located?
- David Masiello's practice location on file with NPPES is 1700 Ceaser E Chavez Ave, Los Angeles, CA 90033.
- What is David Masiello's phone number?
- The practice phone number listed in the NPPES registry for David Masiello is (617) 320-9510.
- Does David Masiello accept Medicare?
- David Masiello is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Masiello's NPI active?
- Yes — David Masiello's NPI (1427277573) is active in the NPPES registry as of the last update on 2014-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.