Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Kenneth Lyle Flax

Individual provider Anesthesiology Physician · NPI 1215354485

Kenneth Lyle Flax practises Anesthesiology in New York, New York. Graduated from Icahn School of Medicine at Mount Sinai in 2014, 12 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 171-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
12
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
NY
In the registry since
2014
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Practice location Address checks out

1 Gustave L Levy Pl
New York, NY 10029-6504
Phone: (212) 987-3100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 292472 (NY)

Record details

NPI number1215354485
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 25, 2014
Last updated in NPPESAugust 18, 2025
Certification dateAugust 18, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2014 (12 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 171 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients136
Services billed 184 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Icahn School of Medicine at Mount Sinai

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 171 clinicians in the practice; 12 are shown here.

Other providers in New York