Karthik Subbu, M.D.
NPI 1760974950 · Endocrinology, Diabetes & Metabolism Physician · Geneva, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karthik Subbu, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Geneva, IL (NPI 1760974950).
Provider details
- NPI number
- 1760974950
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 11019958A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,325 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 400 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 275 | $131 |
| Hemoglobin A1c Level83036 | 164 | $10 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 155 | $35 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 95 | $170 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 253 | 94 |
| Semaglutidebrand: Ozempic | 170 | 53 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 155 | 70 |
| Dulaglutidebrand: Trulicity | 109 | 27 |
| Metformin Hcl | 80 | 37 |
| Metformin Hclbrand: Metformin Hcl Er | 76 | 38 |
Practice location
Mailing address
Additional practice locations (2)
- 1120 W Michigan StIndianapolis, IN 46202-5209Phone: (317) 278-2694Fax: (317) 278-2650
- 100 Eastowne DrChapel Hill, NC 27514-2286Phone: (984) 974-2950
Registry dates
- Enumerated
- 2018-06-04
- Last updated
- 2023-12-20
- Certified
- 2023-12-20
Frequently asked questions
- What is Karthik Subbu's NPI number?
- Karthik Subbu's National Provider Identifier (NPI) is 1760974950, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karthik Subbu's specialty?
- Karthik Subbu is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Karthik Subbu located?
- Karthik Subbu's practice location on file with NPPES is 302 Randall Rd Ste 304, Geneva, IL 60134-4205.
- What is Karthik Subbu's phone number?
- The practice phone number listed in the NPPES registry for Karthik Subbu is (630) 208-6775.
- Does Karthik Subbu accept Medicare?
- Karthik Subbu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karthik Subbu's NPI active?
- Yes — Karthik Subbu's NPI (1760974950) is active in the NPPES registry as of the last update on 2023-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.