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Dr. Adam R. Horn, M.D.

Radiation Oncology (Radiation Oncology Physician)

200 W Arbor Dr
San Diego, CA 92103

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 (800) 926-8273

  • Medicare participating

At a glance

In the NPI registry since
2012
Medicare patients seen, 2024
37

Licensed in California since 2013, 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

  • 2012Registered 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

  • Radiation Oncology Physician primary
    CA license A126697 (first issued 2013; current) · AZ license 61499

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

Map: Radiation Oncology per capita by county →

Medicare patients and services

Medicare patients, 2024
37
Services billed
324
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Calculation of radiation therapy dose10525
Ct guidance for insertion of radiation therapy fields8332
Design and construction of complex radiation treatment device7723
Radiation treatment management, 5 treatment sessions4223
Complex radiation therapy planning2929
New patient office or other outpatient visit, 60-74 minutes2121
3d radiation therapy planning1716
Established patient office or other outpatient visit, 40-54 minutes1513

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

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Mometasone Furoate
Other prescribers in San Diego, CA
30

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

Other Radiation Oncology clinicians in San Diego

Sources

NPI registry (CMS NPPES, November 2026; record last updated December 9, 2024), 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 1982979019. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.