David George Armstrong, DPM, PhD

David Armstrong practices at Keck Hospital of USC in Los Angeles, California, part of University of Southern California.

David Armstrong's NPI, 1427160902, was assigned on August 31, 2006. David Armstrong holds California license E5384.

David Armstrong's primary practice is Keck Hospital of USC, at 1500 San Pablo Street, Los Angeles, CA 90033 in Los Angeles County. The practice phone is (323) 442-8656.

David Armstrong's primary practice is Keck Hospital of USC in Los Angeles, California, part of University of Southern California. David Armstrong is also affiliated with Los Angeles General Medical Center. The medical group on file is USC Care Medical Group. Dmand AI also links David Armstrong to 1 more group practice or clinic, 1 other site and 1 urgent care center, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where David Armstrong practices, 5 sites in all. Vendor and product names are available with a free account.

Podiatrist is David Armstrong's primary specialty in the NPI Registry, under taxonomy code 213E00000X. Dmand AI has David Armstrong's licenses on file in 4 states: California, Arizona, Illinois and Texas.

CMS counts 100 Medicare patients who saw David Armstrong in 2024. The largest group is 65 to 74, with 50 patients. 75% of them have diabetes, and 75% have high blood pressure. 55% are also on Medicaid. Their average risk score is 2.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts David Armstrong's median patient age at 68, with 41% women.

In 2024, David Armstrong wrote 22 Medicare Part D claims. 95% of them were for generic drugs.

David Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 54 procedures of removal or shaving of skin growth by David Armstrong, more than 80% of the clinicians it reports for that procedure.

Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 7 general payments to David Armstrong from 6 drug and device companies in 2025. Consulting fees make up the largest share, 80% of the total. Podimetrics, Inc. paid the most, $50,057.