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Dr. Ayan Sen, MD

Critical Care Medicine (Critical Care Medicine (Internal Medicine) Physician)

13400 E Shea Blvd
Scottsdale, AZ 85259

Who else practices at this address →

Maricopa County includes primary care (13% of residents) and dental (0% of residents) and mental health (4% of residents) shortage areas. About shortage areas

Call (480) 301-8000

  • Medicare participating

At a glance

Years since graduation
25
In the NPI registry since
2010
Medicare patients seen, 2024
143

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

  • 2010Registered 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

  • Critical Care Medicine (Internal Medicine) Physician primary
    AZ license 47338
  • Emergency Medicine Physician
    AZ license 47338 · MI license 4301092096

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

Map: Critical Care Medicine 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
143
Services billed
382
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Critical care, first 30-74 minutes305166
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes10671
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes2723
Insertion of non-tunneled central venous tube for infusion (5 years or older)1211

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.

Payments from drug and device companies

In 2025, 1 companies reported 1 payments worth $17.30 in total to this clinician.

By company
Delcath Systems$17.30
By type
Food and Beverage$17.30

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 Arizona →

Other Critical Care Medicine clinicians in Scottsdale

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 8, 2020), 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 1245561653. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.