Gaia Mohr-Tonachini, MMSC
NPI 1407542442ActiveIndividual· Physician Assistant· Walnut Creek, CA
Physician Assistant (MMSC) in Walnut Creek, California, trained at Yale University School of Medicine (class of 2022). 72 Medicare patients in 2024, $5,447 paid; nearly all of their 345 Part D prescriptions were generic (98%). Si-Bone, Inc. reported $167.44 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1407542442 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MMSC |
| Sole proprietor | No |
| NPI issued | Apr 13, 2023 |
| Last updated in NPPES | Mar 4, 2026 |
| Certified by provider | Mar 4, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA67404 | 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 - Physician Assistant (CA); Practitioner - Physician Assistant (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 72 |
|---|---|
| Services billed | 100 across 7 procedure codes |
| Paid by Medicare | $5,447 |
Part D prescriptions in 2024
| Prescriptions (claims) | 345 · 347 30-day fills |
|---|---|
| Patients | 139 |
| Total drug cost | $3,433 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 2022 |
| Medicare specialty | Physician Assistant |
Medical groups
- Yale UniversityNew Haven, CT · 2,645 clinicians
- Brandon McCutcheon MD PCWalnut Creek, CA · 5 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Lawrence & Memorial HospitalNew London, CT
- Yale-New Haven HospitalNew Haven, CT
Industry payments (Open Payments)
- 2025$167.44 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Si-Bone, Inc. | $167.44 | 1 |
What the 2025 payments were for
- Food and Beverage$167.44 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 95 physician assistants in Walnut Creek · All physician assistants in California