Gonzalo Platon Obnial, M.D.
NPI 1497909931ActiveIndividual· Surgery, Vascular Surgery· Walnut Creek, CA
Surgery, Vascular Surgery (M.D.) with Bass Medical Group, practicing in Walnut Creek, California. In 2024 Medicare paid $471,232 for 543 patients, and Part D covered 360 of their prescriptions, 88% of them generic. Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $584.57 in all, mostly food and beverage. Lists Alta Bates Summit Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1497909931 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 11, 2008 |
| Last updated in NPPES | Feb 28, 2025 |
| Certified by provider | Feb 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | A112342 | CA |
| Surgery | 208600000X | 4301091346 | MI |
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 - Vascular Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 543 |
|---|---|
| Services billed | 2,777 across 75 procedure codes |
| Paid by Medicare | $471,232 |
Part D prescriptions in 2024
| Prescriptions (claims) | 360 · 790 30-day fills |
|---|---|
| Patients | 129 |
| Total drug cost | $41,834 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Vascular Surgery |
| Telehealth | Offers telehealth |
Medical group
- Bass Medical GroupChico, CA · 291 clinicians
Hospital affiliations
- Alta Bates Summit Medical CenterOakland, CA
- Contra Costa Regional Medical CenterMartinez, CA
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Sutter Delta Medical CenterAntioch, CA
Industry payments (Open Payments)
- 2025$584.57 · 11 payments from 2 companies
- 2024$3,160 · 41 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $412.86 | 7 |
| Philips North America LLC | $171.71 | 4 |
What the 2025 payments were for
- Food and Beverage$584.57 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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