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Dr. Igor Feinstein, MD, PHD

Anesthesiology (Anesthesiology 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

  • Medicare participating

At a glance

Years since graduation
12
In the NPI registry since
2014
Medicare patients seen, 2024
125

Licensed in California since 2015, 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

  • 2014Registered 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

  • Anesthesiology Physician primary
    CA license A137728 (first issued 2015; current)

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

Map: Anesthesiology 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
125
Services billed
286
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Insertion of artery tube for blood sampling or infusion through skin6360
Ultrasound of heart with color-depicted blood flow, rate and valve function3333
Ultrasound of heart with probe in esophagus, with report3333
Anesthesia for x-ray or radiation therapy3232
Anesthesia for procedure on heart and large blood vessels2626
Ultrasound of heart blood flow, valves and chambers2424
Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older)2423
Insertion of non-tunneled central venous tube for infusion (5 years or older)2323
Insertion of tube in pulmonary artery for monitoring1717
Anesthesia for procedure to correct abnormal heart rhythm1413

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, 2 companies reported 2 payments worth $150 in total to this clinician.

By company
Heron Therapeutics, Inc.$83.62
Vertex Pharmaceuticals Incorporated$66.50
By type
Food and Beverage$150

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 Anesthesiology clinicians in Stanford

Sources

NPI registry (CMS NPPES, November 2026; record last updated April 10, 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 1821417726. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.