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Dr. Peter Odonnell

Internal Medicine (Internal Medicine Physician)

5841 S Maryland Ave, Mc 2115
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

Call (773) 702-4400

  • Medicare participating

At a glance

Years since graduation
23
In the NPI registry since
2007
Medicare patients seen, 2024
98

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

  • 2003Medical school: University of Chicago, Pritzker School 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

  • Internal Medicine Physician primary

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

Map: Internal Medicine 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
98
Services billed
210
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes8742
Established patient office or other outpatient visit, 40-54 minutes5834
New patient office or other outpatient visit, 60-74 minutes2424
New patient office or other outpatient visit, 45-59 minutes1111

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
Prednisone
Other prescribers in Chicago, IL
17
Erleada (apalutamide)13

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, 5 companies reported 12 payments worth $18,281 in total to this clinician.

By company
Astellas Pharma US Inc$7,236
Astellas Pharma Global Development$3,713
Merck Sharp & Dohme LLC$3,588
Pfizer Inc.$1,875
Janssen Research & Development, LLC$1,869
By type
Consulting Fee$17,544
Travel and Lodging$598
Food and Beverage$138

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Dec 3, 2025Astellas Pharma US Inc
Dec 3, 2025
Consulting Fee
Padcev · Oncology
$4,400
Feb 19, 2025Astellas Pharma Global Development
Feb 19, 2025
Consulting Fee
Padcev · Oncology
$3,713
Oct 10, 2025Astellas Pharma US Inc
Oct 10, 2025
Consulting Fee
Padcev · Oncology
$2,100
Dec 1, 2025Merck Sharp & Dohme LLC
Dec 1, 2025
Consulting Fee$1,920
Nov 28, 2025Pfizer Inc.
Nov 28, 2025
Consulting Fee
PADCEV · ONCOLOGY
$1,875
Aug 12, 2025Janssen Research & Development, LLC
Aug 12, 2025
Consulting Fee$1,438
Jan 22, 2025Merck Sharp & Dohme LLC
Jan 22, 2025
Consulting Fee
ONCOLOGY
Company’s descriptionProvided as part of a clinical research engagement.
$610
May 12, 2025Merck Sharp & Dohme LLC
May 12, 2025
Consulting Fee
KEYTRUDA · ONCOLOGY
Company’s descriptionProvided as part of a clinical research engagement.
$610
Dec 2, 2025Astellas Pharma US Inc
Dec 2, 2025
Travel and Lodging
Padcev · Oncology · travel to Phoenix, AZ
$598
Mar 24, 2025Merck Sharp & Dohme LLC
Mar 24, 2025
Consulting Fee
KEYTRUDA · ONCOLOGY
Company’s descriptionProvided as part of a clinical research engagement.
$448
All 11 payments other than meals, newest first
All payments other than meals
DateCompanyWhat it was forAmount
Dec 3, 2025Astellas Pharma US Inc
Dec 3, 2025
Consulting Fee
Padcev · Oncology
$4,400
Dec 2, 2025Astellas Pharma US Inc
Dec 2, 2025
Travel and Lodging
Padcev · Oncology · travel to Phoenix, AZ
$598
Dec 1, 2025Merck Sharp & Dohme LLC
Dec 1, 2025
Consulting Fee$1,920
Nov 28, 2025Pfizer Inc.
Nov 28, 2025
Consulting Fee
PADCEV · ONCOLOGY
$1,875
Oct 10, 2025Astellas Pharma US Inc
Oct 10, 2025
Consulting Fee
Padcev · Oncology
$2,100
Aug 12, 2025Janssen Research & Development, LLC
Aug 12, 2025
Consulting Fee$1,438
May 12, 2025Merck Sharp & Dohme LLC
May 12, 2025
Consulting Fee
KEYTRUDA · ONCOLOGY
Company’s descriptionProvided as part of a clinical research engagement.
$610
Mar 24, 2025Merck Sharp & Dohme LLC
Mar 24, 2025
Consulting Fee
KEYTRUDA · ONCOLOGY
Company’s descriptionProvided as part of a clinical research engagement.
$448
Feb 19, 2025Astellas Pharma Global Development
Feb 19, 2025
Consulting Fee
Padcev · Oncology
$3,713
Jan 24, 2025Janssen Research & Development, LLC
Jan 24, 2025
Consulting Fee$431
Jan 22, 2025Merck Sharp & Dohme LLC
Jan 22, 2025
Consulting Fee
ONCOLOGY
Company’s descriptionProvided as part of a clinical research engagement.
$610

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 9 industry-funded studies in 2025, from 5 companies. The companies reported $434,124 in research payments for these studies, mostly to the institutions running them.

  • A Phase 1,2 Study of V940 Plus Pembrolizumab With or Without Enfortumab Vedotin in Muscle-Invasive Urothelial Carcinoma MIUC INTerpath-005
    Merck Sharp & Dohme LLC
  • A Randomized Phase 3 Study Evaluating Cystectomy with Perioperative Pembrolizumab and Cystectomy with Perioperative Enfortumab Vedotin and Pembrolizumab versus Cystectomy Alone in Participants who are Cisplatin-Inelig…
    Merck Sharp & Dohme LLC
  • A Study of LY4052031 in Participants With Advanced or Metastatic Urothelial Cancer or Other Solid Tumors
    Eli Lilly and Company · Recruiting · NCT06465069
  • A Phase 1,2 Open-Label Rolling-Arm Umbrella Platform Study of Investigational Agents With or Without Pembrolizumab in Participants with PD-1,L1 Refractory Locally Advanced or Metastatic Urothelial Carcinoma KEYMAKER…
    Merck Sharp & Dohme LLC
  • A Phase 1,2 Randomized, Umbrella Study to Evaluate the Efficacy and Safety of MK-2870 Plus Enfortumab Vedotin EV With and Without Pembrolizumab, as Treatment for Participants With Advanced Urothelial Carcinoma KEYMAKE…
    Merck Sharp & Dohme LLC
  • A phase 2 multicohort openlabel multicenter clinical study evaluating the efficacy and safety of disitamab vedotin RC48ADC alone or in combination with pembrolizumab in subjects with locallyadvanced unresectable or me…
    Seagen Inc.
  • A study of enfortumab vedotin ASG22CE as monotherapy or in combination with other anticancer therapies for the treatment of urothelial cancer
    Pfizer Inc.
  • Study name not reported
    Organon Llc
  • A phase 2 multi cohort open label multicenter clinical study evaluating the efficacy and safety of disitamab vedotin RC48 adc in subjects with HER2 expressing locally advanced unresectable or metastatic urothelial car…
    Seagen Inc.

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 Internal Medicine clinicians in Chicago

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 8, 2007), 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 1861695819. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.