Marissa Wat, RN, MSN
Certified Registered Nurse Anesthetist · San Francisco, CA
Marissa Wat, RN, MSN is a certified registered nurse anesthetist with a practice address in San Francisco, California, and NPI 1023411642, issued on Sep 28, 2014. Check the license (California 95000265, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa Wat
- Credential
- RN, MSN
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License numbers
- 95000265 CA
639926 CA
Self-reported in NPPES; status is on the state search - Practice location
- 505 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 476-9000
- Enumerated
- Sep 28, 2014
- Record last updated
- Nov 5, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210910001323); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 2,943 in California → Look up another NPI →
Also registered at 505 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexander Aabedi, MDStudent in an Organized Health Care Education/Training Program1245971480
- Kathryn Aaronson, RN, CPNPPediatric Nurse Practitioner1992030951
- Sharon AbadaStudent in an Organized Health Care Education/Training Program1003492844
- Abul Abbas, MBBSAnatomic Pathology Physician1881652964
- Jesse Abelson, MDInternal Medicine Physician1083843817
- Rhonald AbitonaAcute Care Nurse Practitioner1164993473
Verify Marissa Wat in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95000265Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 78.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $95.91
4 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 24,076 providers of this specialty with any payment received $135.08 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 4 group practices
- Digestive Health AssociatesReno, NV
- Gastroenterology Consultants LtdReno, NV
- Hospitalist Medicine Physicians OF Washington - TcsPortland, OR
- Western Nevada AnesthesiaCarson City, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Wat among 2,943 certified registered nurse anesthetist records in California
Marissa Wat, RN, MSN is one of 2,943 certified registered nurse anesthetist records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 52% of them.
- NPI issued2014 · 52% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2014 · median 2016 among the 2,089 with a school on file
- Record last updated2015 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Certified Registered Nurse Anesthetist providers in California
There are 2,943 certified registered nurse anesthetist records in California.
All 2,943 in California → Every provider in San Francisco → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Tom Babin, CRNASan Francisco, CA 941431134201643
- Betsy Bartels-Mathews, CRNASan Francisco, CA 941431528082914
- Jay Beebe, PH.D., C.R.N.A.San Francisco, CA 941431063698009
- Diane Cappiccille, CRNASan Francisco, CA 941431689698078
- Ricardo Charles, CRNASan Francisco, CA 941431144386749
- Ann Crowley, RN, CRNASan Francisco, CA 941431326062886
- Christina Dang, CRNASan Francisco, CA 941431467516864
- Amanda Fulton, CRNASan Francisco, CA 941431124189535
Common questions
What is Marissa Wat, RN, MSN's NPI number?
Marissa Wat, RN, MSN's National Provider Identifier (NPI) is 1023411642, issued on Sep 28, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Wat, RN, MSN located?
The NPPES record lists a practice address at 505 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 476-9000. Providers update this record themselves, so call before visiting.
How can I verify Marissa Wat, RN, MSN's license?
NPPES lists California license number 95000265, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is Marissa Wat, RN, MSN's MIPS final score?
The 2023 MIPS final score is 78.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.