Mark Nishiya, MD
NPI 1760411995ActiveIndividual· Urology· Grand Junction, CO
Urology (MD) in Grand Junction, Colorado, trained at University of California, Davis School of Medicine (class of 1990). 289 Medicare patients in 2024, $140,853 paid; nearly all of their 358 Part D prescriptions were generic (91%). Boston Scientific Corporation reported $68.92 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1760411995 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 1, 2006 |
| Last updated in NPPES | Sep 8, 2025 |
| Certified by provider | Sep 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 330113 | CO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Urology (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 289 |
|---|---|
| Services billed | 1,800 across 88 procedure codes |
| Paid by Medicare | $140,853 |
Part D prescriptions in 2024
| Prescriptions (claims) | 358 · 582 30-day fills |
|---|---|
| Patients | 160 |
| Total drug cost | $15,120 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Urology |
Medical groups
- Colorado Surgical Affiliates LLCGrand Junction, CO · 52 clinicians
- Eastern Rio Blanco County Health Service DistrictMeeker, CO · 40 clinicians
Hospital affiliations
- Community HospitalGrand Junction, CO
- Eastern Rio Blanco County Health Service DistrictMeeker, CO
- Intermountain Health St. Mary's Regional HospitalGrand Junction, CO
- Montrose Regional HealthMontrose, CO
Industry payments (Open Payments)
- 2025$68.92 · 2 payments from 1 company
- 2024$212.26 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $68.92 | 2 |
What the 2025 payments were for
- Food and Beverage$68.92 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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