Roberto Ivan Diaz, M.D.
NPI 1124261110ActiveIndividual· Orthopaedic Surgery, Hand Surgery· Mountain View, CA
Orthopaedic Surgery, Hand Surgery (M.D.) in Mountain View, California, trained at University of Iowa, Rj & L Carver College of Medicine (class of 2008). 482 Medicare patients in 2024, $156,951 paid; all of their 80 Part D prescriptions were generic. Axogen was the largest of 2 companies reporting payments in 2025, $230.12 in all, mostly food and beverage.
Overview
| NPI | 1124261110 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 7, 2009 |
| Last updated in NPPES | Dec 10, 2020 |
| Certified by provider | Dec 10, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Hand Surgery Primary | 207XS0106X | A112035 | CA |
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 - Hand Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 482 |
|---|---|
| Services billed | 1,544 across 68 procedure codes |
| Paid by Medicare | $156,951 |
Part D prescriptions in 2024
| Prescriptions (claims) | 80 · 81 30-day fills |
|---|---|
| Patients | 51 |
| Total drug cost | $382.00 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Iowa, Rj & L Carver College of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Hand Surgery |
| Secondary specialties | Orthopedic Surgery |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliation
- El Camino HealthMountain View, CA
Industry payments (Open Payments)
- 2025$230.12 · 3 payments from 2 companies
- 2024$220.85 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axogen | $204.20 | 2 |
| Endo USA, Inc. | $25.92 | 1 |
What the 2025 payments were for
- Food and Beverage$230.12 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Orthopaedic Surgery, Hand Surgery providers in Mountain View
- 1275586828
- 1558421883
- 1659507804
- 1104944933
All Orthopaedic Surgery, Hand Surgery providers in California