Quick answers
- Which hospitals does Daniel Marks work at?
- Medicare's official clinician data lists Daniel Marks at 3 hospitals: Rush Oak Park Hospital, Rush University Medical Center and Saint Francis Hospital-Evanston. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Daniel Marks see patients?
- Medicare's clinician data lists 1 practice location in Chicago, IL. Call before your visit to confirm the address.
- What is Daniel Marks's specialty?
- Medicare lists Cardiac Electrophysiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Daniel Marks accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel Marks 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 Daniel Marks?
- (312) 942-5020, as listed in official Medicare / NPI Registry data.
- What is Daniel Marks's NPI number?
- 1457794406. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Daniel Marks works
Medicare's Facility Affiliation Data lists Daniel Marks at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Rush Oak Park HospitalOak Park, IL · Acute Care Hospital · CCN 140063
- Rush University Medical CenterChicago, IL · Acute Care Hospital · CCN 140119
- Saint Francis Hospital-EvanstonEvanston, IL · Acute Care Hospital · CCN 140080
Practice locations
Addresses where Daniel Marks is enrolled with Medicare (CMS data updated 2026-10-02).
- 1725 W Harrison St, Suite 358Chicago, IL 60612 (312) 942‑5020
Group practices
Medicare enrollment lists Daniel Marks as a member of this group (CMS data updated 2026-10-02).
- Rush University Medical Group1,551 clinicians in the group
Specialties
Other cardiac electrophysiologists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457794406 |
| 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