Tharani Rajeswaran, M.D.
NPI 1861806440 · Endocrinology, Diabetes & Metabolism Physician · Aurora, IL
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tharani Rajeswaran, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Aurora, IL (NPI 1861806440).
Provider details
- NPI number
- 1861806440
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- MD16636 (RI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,106 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 296 | $123 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 266 | $9 |
| 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 | 251 | $16 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 129 | $34 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 89 | $14 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 277 | 95 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 207 | 85 |
| Metformin Hcl | 197 | 70 |
| Empagliflozinbrand: Jardiance | 182 | 62 |
| Semaglutidebrand: Ozempic | 161 | 40 |
| Glipizide | 101 | 34 |
Practice location
Mailing address
Additional practice locations (1)
- 245 Chapman St Ste 300Providence, RI 02905Phone: (401) 444-5280Fax: (401) 444-4480
Registry dates
- Enumerated
- 2014-06-11
- Last updated
- 2021-11-18
- Certified
- 2021-11-18
Frequently asked questions
- What is Tharani Rajeswaran's NPI number?
- Tharani Rajeswaran's National Provider Identifier (NPI) is 1861806440, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tharani Rajeswaran's specialty?
- Tharani Rajeswaran is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Tharani Rajeswaran located?
- Tharani Rajeswaran's practice location on file with NPPES is 4100 Healthway Dr, Aurora, IL 60504-4163.
- What is Tharani Rajeswaran's phone number?
- The practice phone number listed in the NPPES registry for Tharani Rajeswaran is (630) 851-3105.
- Does Tharani Rajeswaran accept Medicare?
- Tharani Rajeswaran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tharani Rajeswaran's NPI active?
- Yes — Tharani Rajeswaran's NPI (1861806440) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.