Quick answers
- Does Steven K. Yamazaki accept Medicare assignment?
- Yes. Medicare's clinician data says Steven K. Yamazaki 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. Yamazaki see?
- In 2024, CMS data shows 90 Original Medicare patients and 4,799 services for Steven K. Yamazaki. This counts Original Medicare only and measures volume, not quality.
- What is Steven K. Yamazaki's NPI number?
- 1861757890. 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. Yamazaki, 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 | 90 |
|---|---|
| Services billed to Medicare | 4,799 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg (J7318)3,605 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)328 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)293 services
- Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)171 services
- Limited ultrasound scan of joint or other extremity structure except blood vessels (76882)149 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 pressure57%
- Diabetes22%
- Ischemic heart disease17%
- Anxiety17%
Hospitals where Steven K. Yamazaki works
Medicare's Facility Affiliation Data lists Steven K. Yamazaki 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.
- AdventHealth Castle RockCastle Rock, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060125
Practice locations
Addresses where Steven K. Yamazaki is enrolled with Medicare (CMS data updated October 2, 2026).
- 2356 Meadows BlvdCastle Rock, CO 80109 (303) 218‑7774
- 2490 W 26th Ave, Suite 10aDenver, CO 80211 (303) 331‑6744
Group practices
Medicare enrollment lists Steven K. Yamazaki as a member of these groups (CMS data updated October 2, 2026).
- Portercare Adventist Health System774 clinicians in the group
- Mile High Sports and Rehabilitation Medicine, PC5 clinicians in the group
Specialties
- Sports Medicineprimary
Other sports medicine doctors in Colorado
Clinicians with the same Medicare primary specialty in Colorado — not a recommendation.
Other clinicians in Portercare Adventist Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861757890 |
| 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