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 patients | 89 |
|---|---|
| Services billed to Medicare | 439 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)357 services
- Advance care planning, each additional 30 minutes (99498)30 services
- 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
- 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.
- Eisenhower Medical CenterRancho Mirage, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050573
- UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050025
Practice locations
Addresses where Shumei Kato is enrolled with Medicare (CMS data updated October 2, 2026).
- 200 W Arbor DrSan Diego, CA 92103 (858) 657‑7000
- 39000 Bob Hope DrRancho Mirage, CA 92270 (760) 340‑3911
- 39950 Vista Del SolRancho Mirage, CA 92270 (760) 340‑0053
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
- Hematologyprimary
- Internal Medicinealso
Other hematologists in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in Regents of the University of California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1609025865 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians