Semon Bader, M.D.
NPI 1750581278ActiveIndividual· Orthopaedic Surgery, Sports Medicine· Concord, CA
Orthopaedic Surgery, Sports Medicine (M.D.) with Golden State Orthopedics and Spine, practicing in Concord, California. 434 Medicare patients in 2024, $174,944 paid; nearly all of their 66 Part D prescriptions were generic (98%). Arthrex, Inc. was the largest of 6 companies reporting payments in 2025, $7,892 in all, mostly speaking and faculty fees. Lists Contra Costa Regional Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1750581278 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 23, 2007 |
| Last updated in NPPES | Nov 7, 2025 |
| Certified by provider | Nov 7, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Sports Medicine Primary | 207XX0005X | A98350 | CA |
| Orthopaedic Surgery | 207X00000X | A98350 | CA |
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 - Orthopedic Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 434 |
|---|---|
| Services billed | 6,883 across 69 procedure codes |
| Paid by Medicare | $174,944 |
Part D prescriptions in 2024
| Prescriptions (claims) | 66 · 76 30-day fills |
|---|---|
| Patients | 40 |
| Total drug cost | $493.80 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Orthopedic Surgery |
| Telehealth | Offers telehealth |
Medical group
- Golden State Orthopedics and SpineCampbell, CA · 182 clinicians
Hospital affiliations
- Contra Costa Regional Medical CenterMartinez, CA
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
- 2025$7,892 · 25 payments from 6 companies
- 2024$7,267 · 38 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Arthrex, Inc. | $3,849 | 3 |
| Evolution Surgical, Inc | $1,505 | 7 |
| Miach Orthopaedics, Inc. | $1,095 | 3 |
| Stryker Corporation | $638.84 | 9 |
| Arcuro Medical Inc | $629.98 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$3,825 · 2 payments
- Travel and Lodging$2,637 · 7 payments
- Food and Beverage$1,429 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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