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Megan Armstrong

NPI 1801401757ActiveIndividual· Orthopaedic Surgery· Fremont, CA

Orthopaedic Surgery with Montrose Memorial Hospital, Inc, practicing in Fremont, California. 1,103 Medicare patients in 2024, $143,713 paid; nearly all of their 1,870 Part D prescriptions were generic (99%). Medical Device Business Services, Inc. was the largest of 3 companies reporting payments in 2025, $438.59 in all, mostly travel and lodging. Lists John Muir Medical Center - Walnut Creek Campus and 2 other hospitals as hospital affiliations.

Overview

NPI1801401757
StatusActive
Entity typeIndividual
Sole proprietorNo
NPI issuedSep 8, 2020
Last updated in NPPESFeb 23, 2023
Certified by providerFeb 23, 2023

Specialties and licenses

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 - Physician Assistant (CO)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients1,103
Services billed2,725 across 28 procedure codes
Paid by Medicare$143,713

Part D prescriptions in 2024

Prescriptions (claims)1,870 · 1,945 30-day fills
Patients724
Total drug cost$28,875
Generic share99% of claims

Medicare sources and data years

Education and affiliations

Graduation year2021
Medicare specialtyPhysician Assistant

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$438.59 · 6 payments from 3 companies
  • 2024$118.28 · 2 payments from 2 companies

Top paying companies in 2025

What the 2025 payments were for

  • Travel and Lodging$219.40 · 1 payment
  • Food and Beverage$219.19 · 5 payments

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

Other orthopedic surgeons in Fremont

All 27 orthopedic surgeons in Fremont · All orthopedic surgeons in California