Dr. Sarah Larson, M.D.
What this data tells you about Dr. Larson
Dr. Sarah Larson is a hematology & oncology specialist in Los Angeles, CA, with 17 years of NPI registration. Based on federal Medicare data, Dr. Larson performed 38,979 Medicare services across 957 unique beneficiaries.
Between the years covered by Open Payments, Dr. Larson received a total of $14,683 from 13 pharmaceutical and/or device companies across 32 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Larson is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Daratumumab injection (Darzalex) An injection containing daratumumab and hyaluronidase-fihj administered under the skin. |
33,120 | $38 | $193 |
| Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg | 2,800 | $38 | $172 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
466 | $106 | $858 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
409 | $8 | $58 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
359 | $10 | $67 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
254 | $9 | $65 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
247 | $66 | $436 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
182 | $94 | $680 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
151 | $1 | $10 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
123 | $68 | $470 |
| Methylprednisolone injection, up to 40 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, administered in a dose of up to 40 mg. |
113 | $3 | $20 |
| Beta-2 microglobulin level test A blood test that measures the level of beta-2 microglobulin, a protein produced by cells in the body. |
109 | $16 | $103 |
| Lactate dehydrogenase (LDH) level test A blood test that measures the amount of lactate dehydrogenase, an enzyme found in many body tissues. It helps assess tissue damage or disease. |
99 | $6 | $45 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
91 | $60 | $380 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
88 | $1 | $10 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
84 | $14 | $245 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
68 | $19 | $150 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
68 | $12 | $124 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
48 | $80 | $508 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
40 | $27 | $475 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
22 | $125 | $1,085 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
15 | $19 | $117 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
12 | $51 | $354 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
11 | $149 | $1,320 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
The majority of payments (76%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Larson is a mixed practice specialist, with above-average Medicare volume (top 18% in CA), with consulting-driven industry engagement, with 17 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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