Quick answers
- Does Steven K. Nishiyama accept Medicare assignment?
- Yes. Medicare's clinician data says Steven K. Nishiyama 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 K. Nishiyama see?
- In 2024, CMS data shows 632 Original Medicare patients and 13,480 services for Steven K. Nishiyama. This counts Original Medicare only and measures volume, not quality.
- What is Steven K. Nishiyama's NPI number?
- 1386904605. 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 K. Nishiyama, 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 | 632 |
|---|---|
| Services billed to Medicare | 13,480 |
| Different services or procedures | 65 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)7,880 services
- Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg (J7318)1,320 services
- Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg (J7325)1,072 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)581 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)306 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 pressure75%
- High cholesterol75%
- Arthritis75%
- Diabetes31%
- Ischemic heart disease28%
- Anxiety23%
Hospitals where Steven K. Nishiyama works
Medicare's Facility Affiliation Data lists Steven K. Nishiyama 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.
- Spring Valley Hospital Medical CenterLas Vegas, NV · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 290046
- Valley Hospital Medical CenterLas Vegas, NV · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 290021
Practice locations
Addresses where Steven K. Nishiyama is enrolled with Medicare (CMS data updated October 2, 2026).
- 2585 Miracle MileBullhead City, AZ 86442
- 2585 Miracle Mile, Suite 107Bullhead City, AZ 86442
- 2800 E Desert Inn Rd, Suite 100Las Vegas, NV 89121 (702) 731‑1616
- 8402 Centennial PkwyLas Vegas, NV 89149 (702) 869‑3486
Group practices
Medicare enrollment lists Steven K. Nishiyama as a member of these groups (CMS data updated October 2, 2026).
- Desert Orthopaedic Center Ltd103 clinicians in the group
- Paragon Physical Therapy and Rehab LLC94 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Bullhead City
Clinicians with the same Medicare primary specialty in Bullhead City, AZ — not a recommendation.
Other clinicians in Desert Orthopaedic Center Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386904605 |
| 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