Nathan Ross Ehmer, D.O.
NPI 1871767673ActiveIndividual· Orthopaedic Surgery, Orthopaedic Trauma· Redding, CA
Orthopaedic Surgery, Orthopaedic Trauma (D.O.) in Redding, California, trained at Arizona College of Osteopathic Medicine Mid Western University (class of 2003). Mostly services rather than prescriptions: Medicare paid $161,964 for 338 patients in 2024, with only 32 Part D claims. Stryker Corporation was the largest of 3 companies reporting payments in 2025, $410.01 in all, mostly food and beverage.
Overview
| NPI | 1871767673 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Apr 14, 2008 |
| Last updated in NPPES | Aug 4, 2025 |
| Certified by provider | Aug 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Orthopaedic Trauma Primary | 207XX0801X | 20A 10366 | 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 - Orthopedic Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 338 |
|---|---|
| Services billed | 845 across 86 procedure codes |
| Paid by Medicare | $161,964 |
Part D prescriptions in 2024
| Prescriptions (claims) | 32 · 32 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $223.86 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Arizona College of Osteopathic Medicine Mid Western University |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Dignity Health Medical FoundationFolsom, CA · 1,184 clinicians
Hospital affiliation
- Mercy Medical Center ReddingRedding, CA
Industry payments (Open Payments)
- 2025$410.01 · 6 payments from 3 companies
- 2024$490.15 · 10 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $341.51 | 4 |
| Sanara Medtech Inc. | $42.98 | 1 |
| Moximed, Inc | $25.52 | 1 |
What the 2025 payments were for
- Food and Beverage$410.01 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Orthopaedic Surgery, Orthopaedic Trauma providers in Redding
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