Gonzalo Matzumura Umemoto, MD
NPI 1700236072 · Nephrology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gonzalo Matzumura Umemoto, MD is a Nephrology Physician provider in Saint Louis, MO (NPI 1700236072).
Provider details
- NPI number
- 1700236072
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2020039264 (MO)
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
10 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
641 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 137 | $75 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 125 | $339 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 120 | $122 |
| Hemodialysis Procedure With Physician Evaluation90935 | 95 | $68 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 56 | $114 |
| Dialysis Procedure Including 1 Evaluation90945 | 42 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 73 | 22 |
| Furosemide | 58 | 17 |
| Amlodipine Besylate | 54 | 25 |
| Empagliflozinbrand: Jardiance | 47 | 11 |
| Carvedilol | 41 | — |
| Allopurinol | 36 | — |
| Dapagliflozin Propanediolbrand: Farxiga | 32 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-17
- Last updated
- 2025-04-17
- Certified
- 2021-02-14
Frequently asked questions
- What is Gonzalo Matzumura Umemoto's NPI number?
- Gonzalo Matzumura Umemoto's National Provider Identifier (NPI) is 1700236072, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gonzalo Matzumura Umemoto's specialty?
- Gonzalo Matzumura Umemoto is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Gonzalo Matzumura Umemoto located?
- Gonzalo Matzumura Umemoto's practice location on file with NPPES is 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110-1003.
- What is Gonzalo Matzumura Umemoto's phone number?
- The practice phone number listed in the NPPES registry for Gonzalo Matzumura Umemoto is (314) 362-7603.
- Does Gonzalo Matzumura Umemoto accept Medicare?
- Gonzalo Matzumura Umemoto is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gonzalo Matzumura Umemoto's NPI active?
- Yes — Gonzalo Matzumura Umemoto's NPI (1700236072) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.