Aaron Clark, MD, PHD
NPI 1518295815ActiveIndividual· Neurological Surgery· San Francisco, CA
Neurological Surgery (MD, PHD) in San Francisco, California, trained at Virginia Commonwealth University, School of Medicine (class of 2008). 447 Medicare patients in 2024, $543,209 paid; all of their 91 Part D prescriptions were generic. Carlsmed, Inc. was the largest of 6 companies reporting payments in 2025, $46,973 in all, mostly consulting fees.
Overview
| NPI | 1518295815 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | Yes |
| NPI issued | Nov 24, 2009 |
| Last updated in NPPES | Feb 26, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | A112222 | 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 - Neurosurgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 447 |
|---|---|
| Services billed | 1,825 across 76 procedure codes |
| Paid by Medicare | $543,209 |
Part D prescriptions in 2024
| Prescriptions (claims) | 91 · 96 30-day fills |
|---|---|
| Patients | 39 |
| Total drug cost | $2,196 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Virginia Commonwealth University, School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical group
- UCSF Medical Group Business ServicesSan Francisco, CA · 1,598 clinicians
Hospital affiliations
- Sonoma Valley HospitalSonoma, CA
- Stanford Health CareStanford, CA
- UCSF Medical CenterSan Francisco, CA
Other facilities
- Amedisys Home Health CareHome health agency · Burlingame, CA
- Healthflex Home Health ServicesHome health agency · Oakland, CA
- Opo Health, LLCHome health agency · San Mateo, CA
Industry payments (Open Payments)
- 2025$46,973 · 61 payments from 6 companies
- 2024$27,025 · 46 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Carlsmed, Inc. | $21,776 | 16 |
| Alphatec Spine, Inc | $18,360 | 2 |
| Icotec Medical Inc. | $4,209 | 13 |
| Medtronic, Inc. | $2,520 | 28 |
| Si-Bone, Inc. | $71.08 | 1 |
What the 2025 payments were for
- Consulting Fee$22,900 · 10 payments
- Royalty or License$18,360 · 2 payments
- Travel and Lodging$3,135 · 14 payments
- Food and Beverage$2,577 · 35 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other neurosurgeons in San Francisco
- 1053638320
- 1184636425
- 1184681009
- 1194106526
- 1235519935
- 1265485155
- 1295056802
- 1316236912
- 1336441229
- 1407059066
- 1407960099
- 1497287791
All 84 neurosurgeons in San Francisco · All neurosurgeons in California