Kristen Tamura, M.D.
NPI 1356502553 · Nephrology Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kristen Tamura, M.D. is a Nephrology Physician provider in San Jose, CA (NPI 1356502553).
Provider details
- NPI number
- 1356502553
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A114723 (CA)
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
18 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
900 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 | 251 | $124 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 123 | $90 |
| Home Dialysis Services Per Month (20 Years Or Older)90966 | 118 | $272 |
| Hemodialysis Procedure With Physician Evaluation90935 | 103 | $66 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 79 | $112 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Irbesartan | 162 | 54 |
| Carvedilol | 140 | 56 |
| Amlodipine Besylate | 133 | 61 |
| Furosemide | 121 | 44 |
| Allopurinol | 117 | 44 |
| Metoprolol Succinate | 94 | 38 |
| Hydralazine Hcl | 87 | 28 |
| Finerenonebrand: Kerendia |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$680 across 27 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
- 2008-06-19
- Last updated
- 2021-05-04
- Certified
- 2021-05-04
Frequently asked questions
- What is Kristen Tamura's NPI number?
- Kristen Tamura's National Provider Identifier (NPI) is 1356502553, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kristen Tamura's specialty?
- Kristen Tamura is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Kristen Tamura located?
- Kristen Tamura's practice location on file with NPPES is 175 N Jackson Ave Ste 103, San Jose, CA 95116-1909.
- What is Kristen Tamura's phone number?
- The practice phone number listed in the NPPES registry for Kristen Tamura is (408) 272-1600.
- Does Kristen Tamura accept Medicare?
- Kristen Tamura is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kristen Tamura's NPI active?
- Yes — Kristen Tamura's NPI (1356502553) is active in the NPPES registry as of the last update on 2021-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.