NPPES file of Aug 9, 2026

Grace Sun Daun, NURSE PRACTITIONER

Adult Health Nurse Practitioner · San Jose, CA

Grace Sun Daun, NURSE PRACTITIONER is an adult health nurse practitioner with a practice address in San Jose, California, and NPI 1699839415, issued on Dec 20, 2006. Check the license (California 390394, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1699839415
Name
Grace Sun Daun
Credential
NURSE PRACTITIONER
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
390394 CA
Self-reported in NPPES; status is on the state search
Practice location
270 International Cir, San Jose, CA 95119
Phone
(408) 972-6527
Enumerated
Dec 20, 2006
Record last updated
Sep 11, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest adult health nurse practitioner records → All 1,405 in California → Look up another NPI →

Also registered at 270 International Cir

A shared address usually means a shared clinic or building; it does not show who employs whom.

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  3. Paul Anderson, RRTRegistered Respiratory Therapist1215540869
  4. Stephania Bell, P.T.Orthopedic Physical Therapist1669526463
  5. Aaron BoselPhysical Therapist1043649189
  6. Katherine Casto, PTPhysical Therapist1013064708

Verify Grace Sun Daun 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 390394    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.

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Grace Sun Daun among 1,405 adult health nurse practitioner records in California

Grace Sun Daun, NURSE PRACTITIONER is one of 1,405 adult health nurse practitioner records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 82% newer
  • In a Medicare fileNo · 56% of these records are
  • In the CMS Doctors and Clinicians fileNo · 31% of these records are
  • Record last updated2025 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Health Nurse Practitioner providers in California

There are 1,405 adult health nurse practitioner records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,405 in California → Every provider in San Jose → Adult Health Nurse Practitioner nationwide →

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Anne Bradford, RN, NPSan Jose, CA 951191619998226
  2. Shairstin FierroSan Jose, CA 951181881050425
  3. Jamie Trinh, NPSan Jose, CA 951161710458294
  4. Stephen Boniface, MSN, NP, AGPCNP-BCSan Jose, CA 951231790178317
  5. Melissa Havens, NURSE PRACTITIONERSan Jose, CA 951251811714678
  6. Mary Chiang, AGPCNPSan Jose, CA 951261275927204
  7. Lauren Lym, ANPSan Jose, CA 951261679686554
  8. Joan Moschella, ANPSan Jose, CA 951261669585501

Common questions

What is Grace Sun Daun, NURSE PRACTITIONER's NPI number?

Grace Sun Daun, NURSE PRACTITIONER's National Provider Identifier (NPI) is 1699839415, issued on Dec 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Grace Sun Daun, NURSE PRACTITIONER located?

The NPPES record lists a practice address at 270 International Cir, San Jose, CA, 95119. Phone: (408) 972-6527. Providers update this record themselves, so call before visiting.

How can I verify Grace Sun Daun, NURSE PRACTITIONER's license?

NPPES lists California license number 390394, 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. 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.