Marissa Wat, RN, MSN
NPI 1023411642ActiveIndividual· Nurse Anesthetist, Certified Registered· San Francisco, CA
Nurse Anesthetist, Certified Registered (RN, MSN) with Regents of the Univ of Ca and 5 other groups, practicing in San Francisco, California. Medicare paid $33,995 for services to 302 patients in 2024. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $106.49 in all, mostly food and beverage. Lists Banner Churchill Community Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1023411642 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | RN, MSN |
| Sole proprietor | No |
| NPI issued | Sep 28, 2014 |
| Last updated in NPPES | Nov 5, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | 95000265 | CA |
| Registered Nurse | 163W00000X | 639926 | 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 - Certified Registered Nurse Anesthetist (CRNA) (CA); Practitioner - Certified Registered Nurse Anesthetist (CRNA) (NV); Practitioner - Certified Registered Nurse Anesthetist (CRNA) (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 302 |
|---|---|
| Services billed | 323 across 38 procedure codes |
| Paid by Medicare | $33,995 |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical groups
- Regents of the Univ of CaSacramento, CA · 1,584 clinicians
- Hospitalist Medicine Physicians of Washington - TcsPortland, OR · 194 clinicians
- Gastroenterology Consultants LtdReno, NV · 38 clinicians
- Digestive Health AssociatesReno, NV · 37 clinicians
- Lifelinc Anesthesia Nevada PCFallon, NV · 5 clinicians
- Western Nevada AnesthesiaCarson City, NV · 3 clinicians
Hospital affiliations
- Banner Churchill Community HospitalFallon, NV
- University of California Davis Medical CenterSacramento, CA
Industry payments (Open Payments)
- 2025$106.49 · 5 payments from 4 companies
- 2024$95.91 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $36.05 | 2 |
| Takeda Pharmaceuticals U.S.A., Inc. | $25.18 | 1 |
| Regeneron Healthcare Solutions, Inc. | $24.23 | 1 |
| Braintree Laboratories, Inc. | $21.03 | 1 |
What the 2025 payments were for
- Food and Beverage$106.49 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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