Steven Kiyoshi Yamazaki, M.D.
NPI 1861757890ActiveIndividual· Family Medicine· Castle Rock, CO
Family Medicine (M.D.) with Portercare Adventist Health System and 1 other group, practicing in Castle Rock, Colorado. 90 Medicare patients in 2024, $94,175 paid; all of their 62 Part D prescriptions were generic. Trice Medical, Inc. was the largest of 2 companies reporting payments in 2025, $1,975 in all, mostly consulting fees. Lists Adventhealth Castle Rock as a hospital affiliation.
Overview
| NPI | 1861757890 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 5, 2012 |
| Last updated in NPPES | Oct 3, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | DR.0056881 | CO |
| Family Medicine, Sports Medicine | 207QS0010X | 66919 | GA |
| Family Medicine, Sports Medicine | 207QS0010X | DR.0056881 | CO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Sports Medicine (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 90 |
|---|---|
| Services billed | 4,799 across 32 procedure codes |
| Paid by Medicare | $94,175 |
Part D prescriptions in 2024
| Prescriptions (claims) | 62 · 75 30-day fills |
|---|---|
| Patients | 53 |
| Total drug cost | $900.87 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Sports Medicine |
Medical groups
- Portercare Adventist Health SystemDenver, CO · 774 clinicians
- Mile High Sports and Rehabilitation Medicine, PCDenver, CO · 5 clinicians
Hospital affiliation
- Adventhealth Castle RockCastle Rock, CO
Industry payments (Open Payments)
- 2025$1,975 · 5 payments from 2 companies
- 2024$4,200 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Trice Medical, Inc. | $1,876 | 4 |
| Boston Scientific Corporation | $99.00 | 1 |
What the 2025 payments were for
- Consulting Fee$1,800 · 2 payments
- Food and Beverage$174.51 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 68 family medicine physicians in Castle Rock · All family medicine physicians in Colorado