Quick answers
- Which hospitals does James R. Mc Mahon work at?
- Medicare's official clinician data lists James R. Mc Mahon at 5 hospitals: Edward Hospital, Loyola University Medical Center, UChicago Medicine AdventHealth Bolingbrook, UChicago Medicine AdventHealth Hinsdale and UChicago Medicine AdventHealth La Grange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James R. Mc Mahon see patients?
- Medicare's clinician data lists 5 practice locations, including Hinsdale, IL, Woodridge, IL and Bolingbrook, IL. Call before your visit to confirm the address.
- What is James R. Mc Mahon's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does James R. Mc Mahon accept Medicare assignment?
- Yes. Medicare's clinician data says James R. Mc Mahon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for James R. Mc Mahon?
- (630) 789-3422, as listed in official Medicare / NPI Registry data.
- What is James R. Mc Mahon's NPI number?
- 1386683399. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James R. Mc Mahon works
Medicare's Facility Affiliation Data lists James R. Mc Mahon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Edward HospitalNaperville, IL · Acute Care Hospital · CCN 140231
- Loyola University Medical CenterMaywood, IL · Acute Care Hospital · CCN 140276
- UChicago Medicine AdventHealth BolingbrookBolingbrook, IL · Acute Care Hospital · CCN 140304
- UChicago Medicine AdventHealth HinsdaleHinsdale, IL · Acute Care Hospital · CCN 140122
- UChicago Medicine AdventHealth La GrangeLa Grange, IL · Acute Care Hospital · CCN 140065
Practice locations
Addresses where James R. Mc Mahon is enrolled with Medicare (CMS data updated 2026-10-02).
- 120 N Oak StHinsdale, IL 60521
- 2363 63rd StWoodridge, IL 60517 (630) 789‑3422
- 500 Remington BlvdBolingbrook, IL 60440 (630) 499‑4750
- 5101 Willow Springs RdLa Grange, IL 60525 (708) 352‑2100
- 908 N Elm St, Suite 404Hinsdale, IL 60521 (630) 789‑3422
Group practices
Medicare enrollment lists James R. Mc Mahon as a member of this group (CMS data updated 2026-10-02).
- Adventist Health Partners Inc43 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Illinois →
Other cardiologists in Hinsdale
Clinicians with the same Medicare primary specialty in Hinsdale, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386683399 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians