Quick answers
- Which hospitals does Seshan Subramanian work at?
- Medicare's official clinician data lists Seshan Subramanian at 3 hospitals: Holy Cross Hospital, Mt Sinai Hospital Medical Center and OSF Little Company of Mary Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Seshan Subramanian see patients?
- Medicare's clinician data lists 3 practice locations, including Chicago, IL. Call before your visit to confirm the address.
- What is Seshan Subramanian's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine and Medical Oncology.
- Does Seshan Subramanian accept Medicare assignment?
- Yes. Medicare's clinician data says Seshan Subramanian 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.
- Does Seshan Subramanian offer telehealth?
- Medicare's clinician data says Seshan Subramanian offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Seshan Subramanian?
- (773) 522-6656, as listed in official Medicare / NPI Registry data.
- What is Seshan Subramanian's NPI number?
- 1083691950. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Seshan Subramanian works
Medicare's Facility Affiliation Data lists Seshan Subramanian at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Holy Cross HospitalChicago, IL · Acute Care Hospital · CCN 140133
- Mt Sinai Hospital Medical CenterChicago, IL · Acute Care Hospital · CCN 140018
- OSF Little Company of Mary Medical CenterEvergreen Park, IL · Acute Care Hospital · CCN 140179
Practice locations
Addresses where Seshan Subramanian is enrolled with Medicare (CMS data updated 2026-10-02).
- 1401 S California AveChicago, IL 60608 (773) 522‑6656
- 2701 W 68th StChicago, IL 60629 (773) 884‑9000
- California Ave at 15th StChicago, IL 60608 (773) 542‑2000
Group practices
Medicare enrollment lists Seshan Subramanian as a member of this group (CMS data updated 2026-10-02).
- Mount Sinai Community Foundation248 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
- Medical Oncologyalso
Other hematologist-oncologists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1961 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1083691950 |
| 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