Nastassia De Souza, M.D.
NPI 1891178836 · Endocrinology, Diabetes & Metabolism Physician · Bellport, NY
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nastassia De Souza, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Bellport, NY (NPI 1891178836).
Provider details
- NPI number
- 1891178836
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MT209620 (PA)
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 tenure25% of score
10 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
885 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 | 211 | $146 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 196 | $87 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 118 | $3 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 81 | $9 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 75 | $146 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tirzepatidebrand: Mounjaro | 118 | 33 |
| Semaglutidebrand: Ozempic | 67 | 25 |
| Metformin Hclbrand: Metformin Hcl Er | 64 | 25 |
| Sitagliptin Phosphatebrand: Januvia | 62 | 23 |
| Levothyroxine Sodium | 49 | 22 |
| Glipizide | 44 | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$404 across 16 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
- 2015-07-08
- Last updated
- 2023-09-18
- Certified
- 2023-08-16
Frequently asked questions
- What is Nastassia De Souza's NPI number?
- Nastassia De Souza's National Provider Identifier (NPI) is 1891178836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nastassia De Souza's specialty?
- Nastassia De Souza is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Nastassia De Souza located?
- Nastassia De Souza's practice location on file with NPPES is 515 Bellport Ave, Bellport, NY 11713-1711.
- What is Nastassia De Souza's phone number?
- The practice phone number listed in the NPPES registry for Nastassia De Souza is (631) 288-7120.
- Does Nastassia De Souza accept Medicare?
- Nastassia De Souza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nastassia De Souza's NPI active?
- Yes — Nastassia De Souza's NPI (1891178836) is active in the NPPES registry as of the last update on 2023-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.