Allison K. Duffy, M.D.
NPI 1548484835ActiveIndividual· Anesthesiology· San Ramon, CA
Anesthesiology (M.D.) in San Ramon, California, trained at University of Wisconsin School of Medicine (class of 2005). Medicare paid $29,614 for services to 240 patients in 2024. Janssen Biotech, Inc. reported $38.21 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1548484835 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 11, 2007 |
| Last updated in NPPES | Mar 29, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | A98122 | 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 - Anesthesiology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 240 |
|---|---|
| Services billed | 242 across 13 procedure codes |
| Paid by Medicare | $29,614 |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Anesthesiology |
Medical group
- G2 Anesthesia PCSan Jose, CA · 107 clinicians
Industry payments (Open Payments)
- 2025$38.21 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $38.21 | 1 |
What the 2025 payments were for
- Food and Beverage$38.21 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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