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Dr. Richard Larson

Hematology & Oncology (Hematology & Oncology Physician)

5841 S Maryland Ave
Chicago, IL 60637

Who else practices at this address →

Cook County includes primary care (3% of residents) and mental health (4% of residents) shortage areas. About shortage areas

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  • Medicare participating

At a glance

Years since graduation
49
In the NPI registry since
2006
Medicare patients seen, 2024
95

Licensed in Illinois since 1978, according to the Illinois Department of Financial and Professional Regulation. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 1977Medical school: Stanford University School of Medicine
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Hematology & Oncology Physician primary
    IL license 036057429 (first issued 1978; active)

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Hematology & Oncology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
95
Services billed
261
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes30243
Established patient office or other outpatient visit, 40-54 minutes5122
Established patient office or other outpatient visit, 20-29 minutes4031
Established patient office or other outpatient visit, 30-39 minutes3423
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes3328
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes1412

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Imatinib Mesylate36
Calquence (acalabrutinib maleate)34
Sprycel (dasatinib)21
Hydroxyurea
Other prescribers in Chicago, IL
18
Acyclovir
Other prescribers in Chicago, IL
13
Iclusig (ponatinib hcl)13
Tasigna (nilotinib hcl)11
Venclexta (venetoclax)11

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 2 companies reported 2 payments worth $757 in total to this clinician.

By company
Epizyme, Inc.$638
Novartis Pharmaceuticals Corporation$120
By type
Consulting Fee$638
Food and Beverage$120

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
May 21, 2025Epizyme, Inc.
May 21, 2025
Consulting Fee
Tazverik · Oncology
$638

Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Illinois →

Industry-funded research

Named as a principal investigator on 4 industry-funded studies in 2025, from 3 companies. The companies reported $133,448 in research payments for these studies, mostly to the institutions running them.

  • A Phase 1/2, Multicenter, Open-Label, Randomized Dose Ranging and Expansion Study of the Combination of Gilteritinib, Venetoclax and Azacitidine in Patients With Newly Diagnosed FLT3 Mutated Acute Myeloid Leukemia (AM…
    Astellas Pharma Global Development
  • A Phase II Multicenter, Open-label, Single-arm Dose Escalation Study of Asciminib Monotherapy in 2nd Line Chronic Phase - Chronic Myelogenous Leukemia
    Novartis Pharmaceuticals Corporation
  • Ph2 multi center open label randomized study in CML CP patients previously treated with imatinib and not achieved DMR asciminib imatinib vs continued imatinib vs switch to nilotinib
    Novartis Pharmaceuticals Corporation
  • Quizartinib or Placebo Plus Chemotherapy in Newly Diagnosed Patients With FLT3-ITD Negative AML
    Daiichi Sankyo Inc. · Active, not recruiting · NCT06578247

From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.

Other Hematology & Oncology clinicians in Chicago

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 24, 2022), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1114089661. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.