Sonia De Alwis
NPI 1649539990 · Endocrinology, Diabetes & Metabolism Physician · New York, NY
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sonia De Alwis is a Endocrinology, Diabetes & Metabolism Physician provider in New York, NY (NPI 1649539990).
Provider details
- NPI number
- 1649539990
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 281048 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,296 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 301 | $142 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 252 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 147 | $10 |
| Hemoglobin A1c Level83036 | 89 | $10 |
| Vitamin D-3 Level82306 | 82 | $29 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 72 | $16 |
| Blood Test, Lipids (cholesterol and Triglycerides) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 152 | 38 |
| Metformin Hclbrand: Metformin Hcl Er | 140 | 43 |
| Levothyroxine Sodiumbrand: Synthroid | 110 | 28 |
| Metformin Hcl | 85 | 24 |
| Alendronate Sodium | 83 | 26 |
| Tirzepatidebrand: Mounjaro | 82 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$286 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-08
- Last updated
- 2020-02-06
- Certified
- 2020-02-06
Frequently asked questions
- What is Sonia De Alwis's NPI number?
- Sonia De Alwis's National Provider Identifier (NPI) is 1649539990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonia De Alwis's specialty?
- Sonia De Alwis is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Sonia De Alwis located?
- Sonia De Alwis's practice location on file with NPPES is 317 E 34th St, New York, NY 10016-4974.
- What is Sonia De Alwis's phone number?
- The practice phone number listed in the NPPES registry for Sonia De Alwis is (212) 726-7437.
- Does Sonia De Alwis accept Medicare?
- Sonia De Alwis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sonia De Alwis's NPI active?
- Yes — Sonia De Alwis's NPI (1649539990) is active in the NPPES registry as of the last update on 2020-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.