Quick answers
- Does Steven T. Shimoyama accept Medicare assignment?
- Yes. Medicare's clinician data says Steven T. Shimoyama 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 Steven T. Shimoyama see?
- In 2024, CMS data shows 501 Original Medicare patients and 10,579 services for Steven T. Shimoyama. This counts Original Medicare only and measures volume, not quality.
- What is Steven T. Shimoyama's NPI number?
- 1386663615. 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 Steven T. Shimoyama, 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 | 501 |
|---|---|
| Services billed to Medicare | 10,579 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (J0702)3,077 services
- Aspiration and/or injection of fluid from large joint (20610)2,216 services
- X-ray of hip, 1 view (73501)798 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)690 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)544 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 cholesterol75%
- Arthritis75%
- High blood pressure72%
- Diabetes33%
- Ischemic heart disease31%
- Osteoporosis24%
Practice locations
Addresses where Steven T. Shimoyama is enrolled with Medicare (CMS data updated October 2, 2026).
- 8540 S Sepulveda Blvd, Suite 1111Los Angeles, CA 90045 (424) 331‑5112
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1981 (45 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386663615 |
| 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
- 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