Sumie Iwasaki, MD
NPI 1790945541 · Student in an Organized Health Care Education/Training Program · New York, NY
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sumie Iwasaki, MD is a Student in an Organized Health Care Education/Training Program provider in New York, NY (NPI 1790945541).
Provider details
- NPI number
- 1790945541
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
38 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 38 | $88 |
Typical Medicare-allowed amounts for these services range $88–$88 (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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 114 | 38 |
| Lisinopril | 78 | 29 |
| Furosemide | 71 | 27 |
| Allopurinol | 59 | 20 |
| Atorvastatin Calcium | 57 | 18 |
| Sevelamer Carbonate | 51 | 22 |
| Amlodipine Besylate | 49 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$70 across 3 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
- 2008-06-16
- Last updated
- 2021-12-15
Frequently asked questions
- What is Sumie Iwasaki's NPI number?
- Sumie Iwasaki's National Provider Identifier (NPI) is 1790945541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sumie Iwasaki's specialty?
- Sumie Iwasaki is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Sumie Iwasaki located?
- Sumie Iwasaki's practice location on file with NPPES is 177 Fort Washington Ave, New York, NY 10032-3733.
- What is Sumie Iwasaki's phone number?
- The practice phone number listed in the NPPES registry for Sumie Iwasaki is (212) 305-2913.
- Does Sumie Iwasaki accept Medicare?
- Sumie Iwasaki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sumie Iwasaki's NPI active?
- Yes — Sumie Iwasaki's NPI (1790945541) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.