William Benjamin Farnsworth, M.D.
NPI 1669827028ActiveIndividual· Psychiatry & Neurology, Neurology· Carlsbad, CA
Psychiatry & Neurology, Neurology (M.D.) with North County Neurology Associates Medical Group, practicing in Carlsbad, California. Their prescriptions cost Medicare Part D more than their services did: $578,829 for 1,678 claims, against $179,841 paid for services in 2024. Abbvie Inc. was the largest of 23 companies reporting payments in 2025, $3,221 in all, mostly food and beverage. Lists Palomar Health Downtown Campus and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1669827028 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 4, 2016 |
| Last updated in NPPES | May 14, 2026 |
| Certified by provider | May 14, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | A172324 | 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 - Neurology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 558 |
|---|---|
| Services billed | 13,689 across 30 procedure codes |
| Paid by Medicare | $179,841 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,678 · 2,990 30-day fills |
|---|---|
| Patients | 370 |
| Total drug cost | $578,829 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- North County Neurology Associates Medical GroupCarlsbad, CA · 47 clinicians
Hospital affiliations
- Palomar Health Downtown CampusEscondido, CA
- Palomar Medical Center PowayPoway, CA
- Scripps Memorial Hospital - EncinitasEncinitas, CA
- Tri-City Medical CenterOceanside, CA
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
Other facilities
- Tri-City Medical CenterInpatient rehabilitation facility · Oceanside, CA
Industry payments (Open Payments)
- 2025$3,221 · 157 payments from 23 companies
- 2024$2,180 · 110 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $924.58 | 32 |
| Ucb, Inc. | $268.24 | 14 |
| Lundbeck LLC | $244.90 | 15 |
| Sk Life Science, Inc. | $231.11 | 16 |
| Neurocrine Biosciences, Inc. | $207.41 | 11 |
What the 2025 payments were for
- Food and Beverage$3,221 · 157 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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