NPPES file of Aug 9, 2026

Katie Alyssa Yamanishi, NP

Nurse Practitioner · San Francisco, CA

Katie Alyssa Yamanishi, NP is a nurse practitioner with a practice address in San Francisco, California, and NPI 1992351498, issued on Aug 12, 2019. Check the license (California NP95036423, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1992351498
Name
Katie Alyssa Yamanishi
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License numbers
NP95036423 CA
95198897 CA
Self-reported in NPPES; status is on the state search
Practice location
505 Parnassus Ave, San Francisco, CA 94143
Phone
(415) 353-2161
Enumerated
Aug 12, 2019
Record last updated
Sep 9, 2025
Medicare enrollment
Enrolled (PECOS I20250924002650); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest nurse practitioner records → All 8,223 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.

  1. Alexander Aabedi, MDStudent in an Organized Health Care Education/Training Program1245971480
  2. Kathryn Aaronson, RN, CPNPPediatric Nurse Practitioner1992030951
  3. Sharon AbadaStudent in an Organized Health Care Education/Training Program1003492844
  4. Abul Abbas, MBBSAnatomic Pathology Physician1881652964
  5. Jesse Abelson, MDInternal Medicine Physician1083843817
  6. Rhonald AbitonaAcute Care Nurse Practitioner1164993473

Verify Katie Alyssa Yamanishi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license NP95036423    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through 2 group practices

  1. Providence Medical FoundationPetaluma, CA
  2. Ucsf Dept OF SurgerySan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katie Alyssa Yamanishi among 8,223 nurse practitioner records in California

Katie Alyssa Yamanishi, NP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 61% of them.

  • NPI issued2019 · 61% of these records are older, 34% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated2025 · median 2017 among the 3,425 with a school on file
  • Record last updated2025 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in California

There are 8,223 nurse practitioner records in California.

All 8,223 in California → Every provider in San Francisco → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Rosalie Bravo, RN, NPSan Francisco, CA 941431740224690
  2. Mitchel Erickson, NPSan Francisco, CA 941431851330260
  3. Caroline Farless, NPSan Francisco, CA 941431720034960
  4. Colleen Irwin, NPSan Francisco, CA 941431316984362
  5. Susan Janson, DNSCSan Francisco, CA 941431437197597
  6. Peter Knott, RN, MSNSan Francisco, CA 941431295774602
  7. Geoffrey Latham, RN, NPSan Francisco, CA 941431356395842
  8. Sarah Maclachlan, FNPSan Francisco, CA 941431972540946

Common questions

What is Katie Alyssa Yamanishi, NP's NPI number?

Katie Alyssa Yamanishi, NP's National Provider Identifier (NPI) is 1992351498, issued on Aug 12, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Katie Alyssa Yamanishi, NP located?

The NPPES record lists a practice address at 505 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 353-2161. Providers update this record themselves, so call before visiting.

How can I verify Katie Alyssa Yamanishi, NP's license?

NPPES lists California license number NP95036423, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.