Darryl Alan Willoughby, MD
NPI 1962585570ActiveIndividual· Surgery· Los Angeles, CA
Surgery (MD) in Los Angeles, California, trained at University of California, Geffen School of Medicine (class of 1993). 18 Medicare patients in 2024, $7,089 paid; all of their 125 Part D prescriptions were generic. Stryker Corporation was the largest of 3 companies reporting payments in 2025, $164.76 in all, mostly food and beverage.
Overview
| NPI | 1962585570 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Oct 24, 2006 |
| Last updated in NPPES | Jun 1, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A54030 | 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 | 18 |
|---|---|
| Services billed | 27 across 7 procedure codes |
| Paid by Medicare | $7,089 |
Part D prescriptions in 2024
| Prescriptions (claims) | 125 · 148 30-day fills |
|---|---|
| Patients | 39 |
| Total drug cost | $1,768 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Orthopedic Surgery |
| Secondary specialties | Sports Medicine |
Medical group
- Gary Chen MD IncLos Angeles, CA · 2 clinicians
Hospital affiliations
- California Hospital Medical Center laLos Angeles, CA
- Martin Luther King, Jr. Community HospitalLos Angeles, CA
Industry payments (Open Payments)
- 2025$164.76 · 4 payments from 3 companies
- 2024$245.43 · 9 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $96.54 | 2 |
| Depuy Synthes Sales Inc. | $35.29 | 1 |
| Orthofix Medical, Inc. | $32.93 | 1 |
What the 2025 payments were for
- Food and Beverage$164.76 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 359 general surgeons in Los Angeles · All general surgeons in California