Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Karthik Subbu, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1760974950

Karthik Subbu, MD practises Internal Medicine in Geneva, Illinois. Graduated from Eastern Virginia Medical School in 2018, 8 years ago. Practices with Central Dupage Physician Group, a 1,094-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois and Indiana.

Years since qualifying
8
Trained at
Eastern Virginia Medical School
Licensed in
IL, IN
In the registry since
2018
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

Geneva, IL

No coordinates on file. Search this address in Google Maps

Additional practice locations (2)

  • 1120 W Michigan St, Indianapolis, IN 46202-5209 — (317) 278-2694
  • 100 Eastowne Dr, Chapel Hill, NC 27514-2286 — (984) 974-2950

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 036164909 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence 11019958A (IN)

Record details

NPI number1760974950
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 4, 2018
Last updated in NPPESDecember 20, 2023
Certification dateDecember 20, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesENDOCRINOLOGY
Medical schoolEASTERN VIRGINIA MEDICAL SCHOOL
Graduated 2018 (8 years in practice)
Group practice Central Dupage Physician Group — 1094 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients291
Services billed 3,004 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $252 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Northwestern Medicine Delnor Community Hospital Hospital · Geneva, IL · listed as Delnor Community Hospital
  • Palos Community Hospital Hospital · Palos Heights, IL
  • Northwestern Medicine Central Dupage Hospital Hospital · Winfield, IL
  • Northwestern Medicine Kishwaukee Hospital Hospital · Dekalb, IL
  • Northwestern Medicine McHenry Hospital · McHenry, IL

Colleagues at Central Dupage Physician Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1094 clinicians in the practice; 12 are shown here.

Other providers in Geneva