Quick answers
- Which hospitals does Karthik Subbu work at?
- Medicare's official clinician data lists Karthik Subbu at 5 hospitals: Northwestern Medicine Central Dupage Hospital, Northwestern Medicine Delnor Community Hospital, Northwestern Medicine Kishwaukee Hospital, Palos Community Hospital and Valley West Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Karthik Subbu see patients?
- Medicare's clinician data lists 1 practice location in Geneva, IL. Call before your visit to confirm the address.
- What is Karthik Subbu's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Endocrinology.
- Does Karthik Subbu accept Medicare assignment?
- Yes. Medicare's clinician data says Karthik Subbu 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 Karthik Subbu offer telehealth?
- Medicare's clinician data says Karthik Subbu offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Karthik Subbu?
- (630) 377-7900, as listed in official Medicare / NPI Registry data.
- What is Karthik Subbu's NPI number?
- 1760974950. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Karthik Subbu works
Medicare's Facility Affiliation Data lists Karthik Subbu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Northwestern Medicine Delnor Community HospitalGeneva, IL · Acute Care Hospital · CCN 140211
- Northwestern Medicine Kishwaukee HospitalDekalb, IL · Acute Care Hospital · CCN 140286
- Palos Community HospitalPalos Heights, IL · Acute Care Hospital · CCN 140062
- Valley West Community HospitalSandwich, IL · Critical Access Hospital · CCN 141340
Practice locations
Addresses where Karthik Subbu is enrolled with Medicare (CMS data updated 2026-10-02).
- 302 Randall RdGeneva, IL 60134 (630) 377‑7900
Group practices
Medicare enrollment lists Karthik Subbu as a member of this group (CMS data updated 2026-10-02).
- Central Dupage Physician Group1,080 clinicians in the group
Specialties
- Internal Medicineprimary
- Endocrinologyalso
Other internal medicine doctors in Geneva
Clinicians with the same Medicare primary specialty in Geneva, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Eastern Virginia Medical School |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1760974950 |
| 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