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Nathan Alyesh

NPI 1417362856ActiveIndividual· Internal Medicine· Tarzana, CA

Internal Medicine with Cedars-Sinai Medical Care Foundation, practicing in Tarzana, California. 281 Medicare patients in 2024, $86,512 paid; nearly all of their 825 Part D prescriptions were generic (90%). Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $35.39 in payments in 2025, mostly food and beverage. Lists Providence Cedars Sinai Tarzana Medical Center as a hospital affiliation.

Overview

NPI1417362856
StatusActive
Entity typeIndividual
Sole proprietorYes
NPI issuedJun 24, 2014
Last updated in NPPESMay 9, 2022
Certified by providerMay 9, 2022

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XA146154CA

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Internal Medicine (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients281
Services billed936 across 20 procedure codes
Paid by Medicare$86,512

Part D prescriptions in 2024

Prescriptions (claims)825 · 1,048 30-day fills
Patients244
Total drug cost$63,011
Generic share90% of claims

Medicare sources and data years

Education and affiliations

Graduation year2012
Medicare specialtyInternal Medicine

Medical group

Hospital affiliation

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$35.39 · 1 payment from 1 company

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$35.39 · 1 payment

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other internal medicine physicians in Tarzana

All 76 internal medicine physicians in Tarzana · All internal medicine physicians in California