Surgeon profile

Richard Chang, M.D.

Undefined Physician type · Walnut Creek, CA 94597NPI 1275669954

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

Contactverified live in NPPES · Jul 8, 2026

Active NPI1450 TREAT BLVD, WALNUT CREEK, CA 94597☎ 925-937-1770

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Operates atCMS affiliations, refreshed monthly

JOHN MUIR MEDICAL CENTER - CONCORD CAMPUS · CONCORD, CAJOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS · WALNUT CREEK, CASAN RAMON REGIONAL MEDICAL CENTER · SAN RAMON, CACONTRA COSTA REGIONAL MEDICAL CENTER · MARTINEZ, CA

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Tracked procedure volumes

Latest federal claims release with year-over-year momentum. Eight device-heavy specialties tracked — more coming.

179 Medicare cases/yr

175 patients

5 procedures

Procedure	Cases	Trend	Patients
Diagnostic Cardiac Cath (Left Heart) CPT 93458	67	▼ -15%	66
Pacemaker — Dual Chamber CPT 33208	42	▲ +83%	42
Coronary Stent Placement CPT 92928	35	▲ +30%	32
ICD Implant with Leads CPT 33249	19	▲ +73%	19
TAVR — Transfemoral CPT 33361	16	▼ -33%	16

Industry relationships

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

$10,982 total received, 2025

126 payments

15 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…