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Hematology

Shumei Kato, MD

Works at hospitals in Rancho Mirage, CA · San Diego, CA · California

Summary

Dr. Shumei Kato, MD is a hematologist at 200 W Arbor Dr, San Diego, CA 92103. Phone: (858) 657-7000. Accepts Medicare assignment. In 2024, Shumei Kato had 89 Original Medicare patients and 439 services. NPI 1609025865. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Shumei Kato, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Shumei Kato accept Medicare assignment?
Yes. Medicare's clinician data says Shumei Kato accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Shumei Kato see?
In 2024, CMS data shows 89 Original Medicare patients and 439 services for Shumei Kato. This counts Original Medicare only and measures volume, not quality.
What is Shumei Kato's NPI number?
1609025865. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Shumei Kato, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients89
Services billed to Medicare439
Different services or procedures8
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)357 services
  2. Advance care planning, each additional 30 minutes (99498)30 services
  3. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)22 services
  4. Advance care planning, first 30 minutes (99497)20 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure61%
  • High cholesterol61%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)60%
  • Diabetes34%
  • Arthritis33%
  • Ischemic heart disease30%

Hospitals where Shumei Kato works

Medicare's Facility Affiliation Data lists Shumei Kato at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Shumei Kato is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Shumei Kato as a member of these groups (CMS data updated October 2, 2026).

  • Regents of the University of California2,089 clinicians in the group
  • Eisenhower Medical Center456 clinicians in the group

Specialties

Find other Hematology doctors in California →

Other hematologists in San Diego

Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.

All hematologists in San Diego →

Other clinicians in Regents of the University of California

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2005 (21 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1609025865
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians