Sarah Larson, M.D.
NPI 1588820955 · Hematology & Oncology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Larson, M.D. is a Hematology & Oncology Physician provider in Los Angeles, CA (NPI 1588820955).
Provider details
- NPI number
- 1588820955
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A117249 (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
17 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
3,010 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 | 496 | $137 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 379 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 350 | $10 |
| Gammaglobulin (immune System Protein) Measurement82784 | 295 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 196 | $101 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 |
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 |
|---|---|---|
| Acyclovir | 120 | 35 |
| Bortezomib | 42 | — |
| Dexamethasone | 23 | — |
| Lenalidomidebrand: Revlimid | 21 | — |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 21 | — |
| Gabapentin | 20 | — |
| Ixazomib Citratebrand: Ninlaro | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$6,574 across 7 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
- 2008-08-05
- Last updated
- 2013-10-02
Frequently asked questions
- What is Sarah Larson's NPI number?
- Sarah Larson's National Provider Identifier (NPI) is 1588820955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Larson's specialty?
- Sarah Larson is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Sarah Larson located?
- Sarah Larson's practice location on file with NPPES is 10833 Le Conte Ave, Los Angeles, CA 90095-1447.
- What is Sarah Larson's phone number?
- The practice phone number listed in the NPPES registry for Sarah Larson is (310) 825-7768.
- Does Sarah Larson accept Medicare?
- Sarah Larson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Larson's NPI active?
- Yes — Sarah Larson's NPI (1588820955) is active in the NPPES registry as of the last update on 2013-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.