Michael Chaffin, N.P.
NPI 1558640235ActiveIndividual· Nurse Practitioner· Mountain View, CA
Nurse Practitioner (N.P.) with Sutter Bay Medical Foundation, practicing in Mountain View, California. 139 Medicare patients in 2024, $3,392 paid; all of their 107 Part D prescriptions were generic. Boston Scientific Corporation reported $87.22 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1558640235 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | N.P. |
| Sole proprietor | No |
| NPI issued | Aug 11, 2011 |
| Last updated in NPPES | Apr 3, 2024 |
| Certified by provider | Apr 3, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 20962 | 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 - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 139 |
|---|---|
| Services billed | 209 across 6 procedure codes |
| Paid by Medicare | $3,392 |
Part D prescriptions in 2024
| Prescriptions (claims) | 107 · 206 30-day fills |
|---|---|
| Patients | 64 |
| Total drug cost | $4,648 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Industry payments (Open Payments)
- 2025$87.22 · 2 payments from 1 company
- 2024$36.15 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $87.22 | 2 |
What the 2025 payments were for
- Food and Beverage$87.22 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 nurse practitioners in Mountain View · All nurse practitioners in California