Christopher A. Walter, D.O.
NPI 1447420732ActiveIndividual· Orthopaedic Surgery· Sonoma, CA
Orthopaedic Surgery (D.O.) in Sonoma, California, trained at College of Osteopathic Physicians and Surgeons of Los Angeles (class of 2004). 296 Medicare patients in 2024, $78,904 paid; all of their 167 Part D prescriptions were generic. Osteoremedies, LLC was the largest of 3 companies reporting payments in 2025, $390.94 in all, mostly food and beverage.
Overview
| NPI | 1447420732 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Mar 3, 2008 |
| Last updated in NPPES | Mar 13, 2026 |
| Certified by provider | Mar 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 20A10826 | 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 | 296 |
|---|---|
| Services billed | 2,085 across 53 procedure codes |
| Paid by Medicare | $78,904 |
Part D prescriptions in 2024
| Prescriptions (claims) | 167 · 181 30-day fills |
|---|---|
| Patients | 61 |
| Total drug cost | $3,412 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | College of Osteopathic Physicians and Surgeons of Los Angeles |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Regents Univ of California UCSFSan Francisco, CA · 283 clinicians
Hospital affiliations
- Marinhealth Medical CenterGreenbrae, CA
- Petaluma Valley HospitalPetaluma, CA
- Sonoma Valley HospitalSonoma, CA
Industry payments (Open Payments)
- 2025$390.94 · 6 payments from 3 companies
- 2024$5,421 · 28 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Osteoremedies, LLC | $174.82 | 1 |
| Zimmer Biomet Holdings, Inc. | $145.84 | 3 |
| Stryker Corporation | $70.28 | 2 |
What the 2025 payments were for
- Food and Beverage$390.94 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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