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Dr. Daniel Simpson, M.D.

Radiation Oncology (Radiation Oncology Physician)

3855 Health Sciences Dr, #0865
La Jolla, CA 92093

Who else practices at this address →

San Diego County includes primary care (1% of residents) and mental health (1% of residents) shortage areas. About shortage areas

Call (858) 822-6040

  • Medicare participating

At a glance

Years since graduation
16
In the NPI registry since
2010
Medicare patients seen, 2024
167

Licensed in California since 2011, 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. What an NPI is

Education and training

  • 2010Medical school: University of California, San Diego School of Medicine
  • 2010Registered with an NPI (national billing number; not a license date)

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

  • Radiation Oncology Physician primary
    CA license A118377 (first issued 2011; current)

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

Map: Radiation Oncology 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
167
Services billed
724
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Calculation of radiation therapy dose10427
Ct guidance for insertion of radiation therapy fields7830
Design and construction of complex radiation treatment device5525
Complex radiation therapy planning3333
Radiation treatment management, 5 treatment sessions2712
High precision radiation therapy planning2020
Design and construction of radiation treatment device for high precision radiation therapy2020

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 Radiation Oncology clinicians in La Jolla

Sources

NPI registry (CMS NPPES, November 2026; record last updated February 23, 2015), 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 1689974883. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.