Richard Williamson Jr., MD
NPI 1609040609ActiveIndividual· Neurological Surgery· Chandler, AZ
Neurological Surgery (MD) in Chandler, Arizona, trained at University of Pittsburgh School of Medicine (class of 2009). 281 Medicare patients in 2024, $118,101 paid; nearly all of their 164 Part D prescriptions were generic (93%). Depuy Synthes Sales Inc. was the largest of 9 companies reporting payments in 2025, $2,349 in all, mostly food and beverage.
Overview
| NPI | 1609040609 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 22, 2008 |
| Last updated in NPPES | May 8, 2025 |
| Certified by provider | May 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | 47644 | AZ |
| Neurological Surgery | 207T00000X | MD457377 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurosurgery (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 281 |
|---|---|
| Services billed | 549 across 70 procedure codes |
| Paid by Medicare | $118,101 |
Part D prescriptions in 2024
| Prescriptions (claims) | 164 · 200 30-day fills |
|---|---|
| Patients | 61 |
| Total drug cost | $6,477 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical group
- Neurosurgical Associates LtdChandler, AZ · 74 clinicians
Hospital affiliations
- Chandler Regional Medical CenterChandler, AZ
- Honorhealth Scottsdale Osborn Medical CenterScottsdale, AZ
- Mercy Gilbert Medical CenterGilbert, AZ
- St Josephs Hospital and Medical CenterPhoenix, AZ
- Summit Healthcare Regional Medical CenterShow Low, AZ
Industry payments (Open Payments)
- 2025$2,349 · 34 payments from 9 companies
- 2024$8,293 · 25 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Depuy Synthes Sales Inc. | $746.18 | 13 |
| Medical Device Business Services, Inc. | $660.20 | 2 |
| Penumbra, Inc. | $263.63 | 2 |
| Balt USA, LLC | $244.42 | 2 |
| Medtronic, Inc. | $232.02 | 5 |
What the 2025 payments were for
- Food and Beverage$1,849 · 33 payments
- Consulting Fee$500.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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