Sonia Tanwar
NPI 1477875870 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sonia Tanwar is a Internal Medicine Physician provider in Chicago, IL (NPI 1477875870).
Provider details
- NPI number
- 1477875870
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036.124247 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
189 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 | 166 | $101 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $71 |
Typical Medicare-allowed amounts for these services range $71–$101 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 224 | 77 |
| Enalapril Maleate | 132 | 36 |
| Nifedipinebrand: Nifedipine Er | 132 | 43 |
| Metformin Hcl | 126 | 37 |
| Metoprolol Succinate | 88 | 25 |
| Amlodipine Besylate | 81 | 33 |
| Hydrochlorothiazide | 80 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-02-26
- Last updated
- 2021-04-30
- Certified
- 2021-04-30
Frequently asked questions
- What is Sonia Tanwar's NPI number?
- Sonia Tanwar's National Provider Identifier (NPI) is 1477875870, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonia Tanwar's specialty?
- Sonia Tanwar is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sonia Tanwar located?
- Sonia Tanwar's practice location on file with NPPES is 1900 W Polk St, Chicago, IL 60612-3723.
- What is Sonia Tanwar's phone number?
- The practice phone number listed in the NPPES registry for Sonia Tanwar is (312) 864-4406.
- Does Sonia Tanwar accept Medicare?
- Sonia Tanwar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sonia Tanwar's NPI active?
- Yes — Sonia Tanwar's NPI (1477875870) is active in the NPPES registry as of the last update on 2021-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.