Nathan Hammel, MD
NPI 1558435644ActiveIndividual· Orthopaedic Surgery· Encinitas, CA
Orthopaedic Surgery (MD) in Encinitas, California, trained at Jefferson Medical College of Thomas Jefferson University (class of 2006). 188 Medicare patients in 2024, $82,961 paid; all of their 63 Part D prescriptions were generic. Acumed LLC was the largest of 2 companies reporting payments in 2025, $37.01 in all, mostly food and beverage.
Overview
| NPI | 1558435644 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 20, 2006 |
| Last updated in NPPES | Mar 17, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | A139718 | CA |
| Orthopaedic Surgery | 207X00000X | 01065216A | IN |
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 | 188 |
|---|---|
| Services billed | 2,511 across 49 procedure codes |
| Paid by Medicare | $82,961 |
Part D prescriptions in 2024
| Prescriptions (claims) | 63 · 67 30-day fills |
|---|---|
| Patients | 39 |
| Total drug cost | $992.16 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- San Dieguito Orthopedic Medical Center P CEncinitas, CA · 16 clinicians
Industry payments (Open Payments)
- 2025$37.01 · 2 payments from 2 companies
- 2024$186.48 · 15 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Acumed LLC | $22.75 | 1 |
| Stryker Corporation | $14.26 | 1 |
What the 2025 payments were for
- Food and Beverage$37.01 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 29 orthopedic surgeons in Encinitas · All orthopedic surgeons in California