Surgery in San Ramon, CA
6 verified surgery doctors in San Ramon.
General surgeons perform operations across the abdomen, digestive tract, skin, and soft tissue.
NPPES tenure ≠ clinical experience. "Years on NPPES" is time since the physician first registered a National Provider Identifier, not time practicing medicine. Verify current license status with the state medical board.
Dr. William Hamstra, DO
Surgery
CMS Open Payments· No payments in 2023
Industry Payments
No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.
Dr. Michael Wynn, MD
Surgery
CMS Open Payments· No payments in 2023
Industry Payments
No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.
Dr. Barry Gardiner, MD
Surgery
CMS Open Payments· $1,806 (2023)
Industry Payments (2023)
Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.
$1,806
Total received
2
Transactions
1
Paying companies
Top paying companies
Among the 39,537 surgery doctors we've analyzed, about 52% received any industry payment (median $305 among those who did). This doctor's total ranks around the 88th percentile of that group.
Benchmark reflects doctors we've analyzed, not all US surgery doctors.
Payments to Barry Gardiner do not imply any wrongdoing. Many are meals, education, or research support.
Dr. Ron Cooper, MD
Surgery
CMS Open Payments· No payments in 2023
Industry Payments
No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.
Dr. Jing Zhou, MD
Surgery
CMS Open Payments· $1,177 (2023)
Industry Payments (2023)
Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.
$1,177
Total received
6
Transactions
3
Paying companies
Top paying companies
Among the 39,537 surgery doctors we've analyzed, about 52% received any industry payment (median $305 among those who did). This doctor's total ranks around the 85th percentile of that group.
Benchmark reflects doctors we've analyzed, not all US surgery doctors.
Payments to Jing Zhou do not imply any wrongdoing. Many are meals, education, or research support.
Dr. Aileen Murphy, DO
Surgery
CMS Open Payments· $11,931 (2023)
Industry Payments (2023)
Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.
$11,931
Total received
40
Transactions
11
Paying companies
Top paying companies
Among the 39,537 surgery doctors we've analyzed, about 52% received any industry payment (median $305 among those who did). This doctor's total is higher than 96% of that group — among the highest recipients.
Benchmark reflects doctors we've analyzed, not all US surgery doctors.
Payments to Aileen Murphy do not imply any wrongdoing. Many are meals, education, or research support.