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Won I. Kim, NP

Nurse Practitioners (Nurse Practitioner)

300 Pasteur Dr
Stanford, CA 94305

Who else practices at this address →

Santa Clara County includes mental health (13% of residents) shortage areas. About shortage areas

Call (650) 723-1303

  • Medicare participating

At a glance

Years since graduation
8
In the NPI registry since
2019
Medicare patients seen, 2024
247

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2019Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Nurse Practitioner primary
    CA license 95010654

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Nurse Practitioners per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
247
Services billed
678
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 20-29 minutes152126
Established patient office or other outpatient visit, 10-19 minutes6055
Telephone medical discussion with physician, 11-20 minutes4841
Established patient office or other outpatient visit, 30-39 minutes3837
Telephone medical discussion with physician, 21-30 minutes3129
Established patient office or other outpatient visit, 40-54 minutes1212

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 1 companies reported 1 payments worth $69.30 in total to this clinician.

By company
Janssen Biotech, Inc.$69.30
By type
Food and Beverage$69.30

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in California →

Other Nurse Practitioners clinicians in Stanford

Sources

NPI registry (CMS NPPES, November 2026; record last updated March 24, 2023), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1104488089. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.