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Dr. Wei Ding, MD

Hematology (Hematology (Internal Medicine) Physician)

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) 723-4000

At a glance

In the NPI registry since
2006

Licensed in California since 2024, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

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. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

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

  • Hematology (Internal Medicine) Physician primary
    CA license C196520 (first issued 2024; current)
  • Medical Oncology Physician
    CA license C196520 (first issued 2024; current)

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

Map: Hematology per capita by county →

Medicare patients and services

Most frequent Medicare services, 2023
ServiceTimesPatients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes8824
Established patient office or other outpatient visit, 30-39 minutes6958
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes3614
Telephone medical discussion with physician, 21-30 minutes1414

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.

Other Hematology clinicians in Stanford

Sources

NPI registry (CMS NPPES, November 2026; record last updated April 29, 2025), 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 1265454201. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.