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Michael Arnstein, M.D.

NPI 1821000100ActiveIndividual· Specialist· Torrance, CA

Specialist (M.D.) in Torrance, California, trained at Vanderbilt University School of Medicine (class of 1987). 335 Medicare patients in 2024, $338,361 paid; nearly all of their 123 Part D prescriptions were generic (93%). Polynovo North America LLC was the largest of 7 companies reporting payments in 2025, $2,203 in all, mostly food and beverage.

Overview

NPI1821000100
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedAug 13, 2006
Last updated in NPPESJul 8, 2007

Specialties and licenses

TaxonomyCodeLicenseState
Specialist Primary174400000XG80314CA

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 - Plastic and Reconstructive Surgery (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients335
Services billed1,791 across 87 procedure codes
Paid by Medicare$338,361

Part D prescriptions in 2024

Prescriptions (claims)123 · 127 30-day fills
Patients56
Total drug cost$26,485
Generic share93% of claims

Medicare sources and data years

Education and affiliations

Medical schoolVanderbilt University School of Medicine
Graduation year1987
Medicare specialtyPlastic And Reconstructive Surgery
Secondary specialtiesHand Surgery
TelehealthOffers telehealth

Medical groups

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$2,203 · 25 payments from 7 companies
  • 2024$4,230 · 61 payments from 7 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$2,203 · 25 payments

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

Other Specialist providers in Torrance

All 107 Specialist providers in Torrance · All Specialist providers in California