Surgeon profile

Megan Armstrong

Physician Assistant · Fremont, CA 94538NPI 1801401757

Database refreshed July 2026Live NPPES registry· Industry payments CY2025ⓘ sources

Contactverified live in NPPES · Jul 7, 2026

Active NPI2000 MOWRY AVE, FREMONT, CA 94538☎ 510-818-7200

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Operates atCMS affiliations, refreshed monthly

WASHINGTON HOSPITAL · FREMONT, CAJOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS · WALNUT CREEK, CASTANFORD HEALTH CARE TRI-VALLEY · PLEASANTON, CASTANFORD HEALTH CARE · STANFORD, CA

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Tracked procedure volumes

Latest federal claims release with year-over-year momentum. Orthopedics & cardiology tracked — more specialties coming.

513 Medicare cases/yr

496 patients

3 procedures

Procedure	Cases	Trend	Patients
Total Knee Replacement (TKA) CPT 27447	336	▲ +226%	323
Total Hip Replacement (THA) CPT 27130	160	▲ +220%	157
Partial Knee Replacement CPT 27446	17	new	16

Industry relationships

CMS Open Payments, CY2025 general payments (published June 2026) — who already pays this surgeon.

$439 total received, 2025

6 payments

3 manufacturer relationships on file

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Relationship trajectory, 2019–2025

7-year payment trajectory (who's warming up, who's cooling off on this surgeon) is a paid feature. Unlock

Pulling CY2025 industry payments + 7-year history…