Dr. David W. Chang, MD

Dr. Chang practices at Vascular Associates Of Northern California in Los Gatos, California.

Dr. Chang's NPI, 1265453724, was assigned on July 21, 2006. Dr. Chang graduated from UCSF School of Medicine in 1990. Dr. Chang's California license number on file is G74257.

Dr. Chang's primary practice is Vascular Associates of Northern California, at 14911 National Ave, Los Gatos, CA 95032. The practice phone is (408) 358-8272.

Dr. Chang's primary practice is Vascular Associates Of Northern California in Los Gatos, California. Dr. Chang is also affiliated with Good Samaritan Hospital. The medical group on file is Vascular Associates of Northern California.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 2 sites in all. Vendor and product names are available with a free account.

Vascular surgery is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Chang is board certified in vascular surgery by the American Board of Surgery. Dr. Chang has a license on file in California.

Dmand AI lists blood vessel access for dialysis, chronic skin ulcer, leg revascularization, peripheral vascular disease and varicose veins among the conditions Dr. Chang treats.

CMS data shows 300 Medicare services from Dr. Chang across 7 procedure codes in 2024, for 105 Medicare patients. Medicare paid $39,744 for them. Every service was in an office.

CMS counts 105 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 46 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.90, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 78, with 42% women.

In 2024, Dr. Chang wrote 70 Medicare Part D claims for 23 patients. 26% of them were for generic drugs. CMS names the drug for 46 of them, across 2 drugs with 11 or more claims each, at $35,922 in total drug cost. In 2023, CMS named 11 claims across 1 drug.

Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of leg revascularization (restoring blood flow) by Dr. Chang, more than 64% of the clinicians it reports for that procedure.

CMS Open Payments shows 56 general payments to Dr. Chang from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 79% of the total. Silk Road Medical, Inc. paid the most, $963.

Dr. Chang graduated from UCSF School of Medicine in 1990.

Dr. Chang is in network with 13 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.