John Victor Gahagan, M.D.
NPI 1558629493ActiveIndividual· Surgery· Pleasanton, CA
Surgery (M.D.) with Stanford Health Care, practicing in Pleasanton, California. Mostly services rather than prescriptions: Medicare paid $83,823 for 211 patients in 2024, with only 46 Part D claims. Intuitive Surgical, Inc. reported $37.39 in payments in 2024, mostly food and beverage. Lists Stanford Health Care and 1 other hospital as hospital affiliations.
Overview
| NPI | 1558629493 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 29, 2012 |
| Last updated in NPPES | Jun 11, 2024 |
| Certified by provider | Jun 11, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A126753 | 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 - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 211 |
|---|---|
| Services billed | 485 across 60 procedure codes |
| Paid by Medicare | $83,823 |
Part D prescriptions in 2024
| Prescriptions (claims) | 46 · 46 30-day fills |
|---|---|
| Patients | 37 |
| Total drug cost | $1,588 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliations
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2024$37.39 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $37.39 | 1 |
What the 2024 payments were for
- Food and Beverage$37.39 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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