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Dr. James A. Wallace

Medical Oncology (Medical 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
24
In the NPI registry since
2007
Medicare patients seen, 2024
429

Licensed in Illinois since 2005, 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

  • 2002Medical school: University of Vermont College of Medicine
  • 2007Registered 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

  • Medical Oncology Physician primary
    IL license 036113259 (first issued 2005; active)

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

Map: Medical 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
429
Services billed
2,431
Patients’ average age
76
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes1,158313
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes20884
Established patient office or other outpatient visit, 40-54 minutes14687
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes12162
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes3837
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes3332
New patient office or other outpatient visit, 60-74 minutes2626
Established patient office or other outpatient visit, 20-29 minutes2019
Telephone medical discussion with physician, 11-20 minutes1613
New patient office or other outpatient visit, 45-59 minutes1313

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

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, 27 companies reported 95 payments worth $21,715 in total to this clinician.

By type
Compensation for services other than consulting (speaking, faculty)$17,670
Food and Beverage$2,291
Travel and Lodging$1,661
Education$92.99

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
May 5, 2025Jazz Pharmaceuticals Inc.
May 5, 2025
Compensation for services other than consulting (speaking, faculty)
ZEPZELCA · HEMATOLOGY/ONCOLOGY
$4,960
Nov 5, 2025Jazz Pharmaceuticals Inc.
Nov 5, 2025
Compensation for services other than consulting (speaking, faculty)
ZEPZELCA · HEMATOLOGY/ONCOLOGY
$4,960
Nov 17, 2025Jazz Pharmaceuticals Inc.
Nov 17, 2025
Compensation for services other than consulting (speaking, faculty)
ZEPZELCA · HEMATOLOGY/ONCOLOGY
$4,960
Sep 9, 2025Jazz Pharmaceuticals Inc.
Sep 9, 2025
Compensation for services other than consulting (speaking, faculty)
ZEPZELCA · HEMATOLOGY/ONCOLOGY
$2,790
Apr 26, 2025Jazz Pharmaceuticals Inc.
Apr 26, 2025
Travel and Lodging
ZEPZELCA · HEMATOLOGY/ONCOLOGY · travel to Quincy, IL · in-kind
$1,101
Apr 26, 2025Jazz Pharmaceuticals Inc.
Apr 26, 2025
Travel and Lodging
ZEPZELCA · HEMATOLOGY/ONCOLOGY · travel to Quincy, IL · in-kind
$237
May 7, 2025Jazz Pharmaceuticals Inc.
May 7, 2025
Travel and Lodging
ZEPZELCA · HEMATOLOGY/ONCOLOGY · travel to Quincy, IL · in-kind
$185
Dec 9, 2025Jazz Pharmaceuticals Inc.
Dec 9, 2025
Travel and Lodging
ZEPZELCA · HEMATOLOGY/ONCOLOGY · travel to Granger, IN · in-kind
$137
Sep 1, 2025Incyte Corporation
Sep 1, 2025
Education$92.99

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 1 industry-funded study in 2025, from 1 company. The companies reported $2,200 in research payments for these studies, mostly to the institutions running them.

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 Medical 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 1669687307. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.