Dr. Ehrin J. Armstrong, MD

Dr. Armstrong practices at HCA HealthONE Swedish in Englewood, Colorado, part of HCA Healthcare.

Dr. Armstrong's NPI, 1699733634, was assigned on May 1, 2006. Dr. Armstrong graduated from Harvard Medical School in 2004. Dr. Armstrong holds California license A103263.

Dr. Armstrong's primary practice is HCA HealthONE Swedish, at 501 E Hampden Ave, Englewood, CO 80113 in Arapahoe County. The practice phone is (303) 788-5000.

Dr. Armstrong's primary practice is HCA HealthONE Swedish in Englewood, Colorado, part of HCA Healthcare. Dr. Armstrong is also affiliated with HCA HealthONE Aurora. The medical group on file is Aurora Denver Cardiology Associates. Dmand AI also links Dr. Armstrong to 3 more hospitals, 3 medical groups and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstrong practices, 6 sites in all. Vendor and product names are available with a free account.

Cardiovascular disease is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Armstrong is licensed in California.

CMS data shows 2,253 Medicare services from Dr. Armstrong across 23 procedure codes in 2024, for 384 Medicare patients. Medicare paid $157,470 for them.

CMS counts 384 Medicare patients who saw Dr. Armstrong in 2024. The largest group is 65 to 74, with 203 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 17% are also on Medicaid. Their average risk score is 2.11, 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. Armstrong's median patient age at 72, with 47% women.

In 2024, Dr. Armstrong wrote 544 Medicare Part D claims for 177 patients. 75% of them were for generic drugs. CMS names the drug for 426 of them, across 13 drugs with 11 or more claims each, at $86,761 in total drug cost.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 68 out of 100 for Dr. Armstrong for performance year 2024, reported as part of a group. Dr. Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Armstrong as offering telehealth. CMS counts 25 procedures of leg revascularization (restoring blood flow) by Dr. Armstrong, more than 85% of the clinicians it reports for that procedure.

Pacemaker insertion or repair: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 228 papers to Dr. Armstrong, published from 2014 to 2025. 2020 was the busiest year, with 36. The most frequent topics are Peripheral Arterial Disease, Endovascular Procedures and Popliteal Artery. Dr. Armstrong has published most often in J Endovasc Ther. Dr. Armstrong's most frequent co-authors are Stephen W. Waldo, MD, Damianos Kokkinidis, MD and Javier Valle.

CMS Open Payments shows 852 general payments to Dr. Armstrong from 57 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 53% of the total. The Spectranetics Corporation paid the most, $131,380. It also lists 1 research payment totaling $11,000 in 2024.

Dr. Armstrong graduated from Harvard Medical School in 2004.