Dr. Ehrin J. Armstrong, M.D.
Interventional Cardiology (Interventional Cardiology Physician)
499 E Hampden Ave Ste 200
Englewood, CO 80113
Who else practices at this address →
Arapahoe County includes primary care (8% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- Harvard Medical School (2004)
- Years since graduation
- 22
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 384
Licensed in Colorado since 2014, according to the Colorado Department of Regulatory Agencies. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2004Medical school: Harvard Medical School
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Interventional Cardiology Physician primary
CO license DR.0053941 (first issued 2014; active) -
Cardiovascular Disease Physician
CO license DR.0053941 (first issued 2014; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Hca-Healthone DBA Swedish Medical Center Englewood, CO
- The Medical Center of Aurora & South Hospital Aurora, CO
- HCA Healthone Rose Denver, CO
- Keefe Memorial Hospital Cheyenne Wells, CO
- Haxtun Hospital District Haxtun, CO
Medical groups
- Healthone Heart Care LLC (49 clinicians)
- Keefe Memorial Health Service District (21 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 384
- Services billed
- 2,696
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 160 | 75 |
| Ultrasound evaluation of blood vessel with review by radiologist, each additional vessel | 80 | 25 |
| New patient office or other outpatient visit, 45-59 minutes | 57 | 57 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 43 | 38 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 42 | 39 |
| Ultrasound evaluation of blood vessel with review by radiologist, initial vessel | 33 | 26 |
| Removal of skin and tissue, 20.0 sq cm or less | 29 | 15 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 29 | 24 |
| Ultrasonic guidance for blood vessel access | 25 | 14 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 17 | 12 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Clopidogrel (clopidogrel bisulfate) Other prescribers in Englewood, CO | 95 |
| Alprazolam Other prescribers in Englewood, CO | 92 |
| Eliquis (apixaban) Other prescribers in Englewood, CO | 47 |
| Repatha Sureclick (evolocumab) Other prescribers in Englewood, CO | 38 |
| Rosuvastatin Calcium Other prescribers in Englewood, CO | 27 |
| Metoprolol Succinate Other prescribers in Englewood, CO | 23 |
| Carvedilol Other prescribers in Englewood, CO | 20 |
| Atorvastatin Calcium Other prescribers in Englewood, CO | 18 |
| Amiodarone Hcl Other prescribers in Englewood, CO | 16 |
| Isosorbide Mononitrate Er (isosorbide mononitrate) Other prescribers in Englewood, CO | 14 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 20 companies reported 108 payments worth $69,142 in total to this clinician.
| Bard Peripheral Vascular, Inc. | $31,216 |
|---|---|
| Cordis US Corp. | $14,591 |
| Abbott Laboratories | $12,265 |
| Angiodynamics, Inc. | $5,029 |
| Shockwave Medical, Inc | $2,792 |
| Endologix LLC | $1,589 |
| W. L. Gore & Associates, Inc. | $890 |
| Medtronic, Inc. | $253 |
| Consulting Fee | $45,150 |
|---|---|
| Travel and Lodging | $16,062 |
| Food and Beverage | $3,972 |
| Speaking at a medical education program | $2,000 |
| Long term medical supply or device loan | $1,958 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Bard Peripheral Vascular, Inc. Feb 13, 2025 | Consulting Fee | $9,750 |
| Bard Peripheral Vascular, Inc. May 5, 2025 | Consulting Fee | $9,750 |
| Cordis US Corp. Oct 31, 2025 | Travel and Lodging SELUTION SLR PTA · Cardiology/Vascular Diseases · travel to Rome, Italy | $9,424 |
| Bard Peripheral Vascular, Inc. Jan 2, 2025 | Consulting Fee | $5,850 |
| Cordis US Corp. Mar 17, 2025 | Travel and Lodging travel to Atlanta, GA | $4,357 |
| Abbott Laboratories Feb 18, 2025 | Consulting Fee PERCLOSE PROSTYLE · Structural Heart | $3,240 |
| Abbott Laboratories Jan 13, 2025 | Consulting Fee ESPRIT · Vascular | $3,240 |
| Bard Peripheral Vascular, Inc. Dec 5, 2025 | Consulting Fee | $3,150 |
| Bard Peripheral Vascular, Inc. Apr 21, 2025 | Consulting Fee | $2,600 |
| Shockwave Medical, Inc May 29, 2025 | Consulting Fee Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · Cardiology | $2,200 |
All 29 payments other than meals, newest first
| Company | What it was for | Amount |
|---|---|---|
| Endologix LLC Dec 10, 2025 | Consulting Fee ENDOCROSS Device; Torus Stent Graft System · Cardiology/Vascular Diseases Company’s description53254 | $1,000 |
| Bard Peripheral Vascular, Inc. Dec 5, 2025 | Consulting Fee | $3,150 |
| Abbott Laboratories Dec 1, 2025 | Consulting Fee SUPERA · Structural Heart | $540 |
| W. L. Gore & Associates, Inc. Nov 21, 2025 | Consulting Fee Product in Development · Devices | $780 |
| Cordis US Corp. Oct 31, 2025 | Travel and Lodging SELUTION SLR PTA · Cardiology/Vascular Diseases · travel to Rome, Italy | $9,424 |
| Shockwave Medical, Inc Oct 26, 2025 | Consulting Fee Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · Cardiology | $550 |
| Cordis US Corp. Oct 24, 2025 | Travel and Lodging SELUTION SLR PTA · Cardiology/Vascular Diseases · travel to Chicago, IL | $639 |
| Angiodynamics, Inc. Oct 13, 2025 | Long term medical supply or device loan Auryon Laser System 100-120 Vac · CV · in-kind | $1,958 |
| Angiodynamics, Inc. Oct 12, 2025 | Travel and Lodging ANGIOVAC · VIT · travel to PHOENIX, AZ · in-kind | $472 |
| Angiodynamics, Inc. Oct 6, 2025 | Travel and Lodging ALPHAVAC · VIT · travel to PHOENIX, AZ · in-kind | $828 |
| Angiodynamics, Inc. Oct 6, 2025 | Travel and Lodging ALPHAVAC · VIT · travel to PHOENIX, AZ · in-kind | $190 |
| Cordis US Corp. Oct 6, 2025 | Travel and Lodging travel to Boulder, CO | $26.00 |
| Angiodynamics, Inc. Oct 6, 2025 | Travel and Lodging ALPHAVAC · VIT · travel to PHOENIX, AZ · in-kind | $6.99 |
| Cordis US Corp. Sep 25, 2025 | Travel and Lodging travel to Chicago, IL | $8.85 |
| Angiodynamics, Inc. Jul 15, 2025 | Travel and Lodging AURYON LASER SYSTEM 100-120 VAC · PAD · travel to PHOENIX, AZ · in-kind | $78.86 |
| Angiodynamics, Inc. Jul 8, 2025 | Travel and Lodging AURYON LASER SYSTEM 100-120 VAC · PAD · travel to PHOENIX, AZ · in-kind | $23.82 |
| Shockwave Medical, Inc May 29, 2025 | Consulting Fee Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · Cardiology | $2,200 |
| Angiodynamics, Inc. May 8, 2025 | Travel and Lodging AURYON LASER SYSTEM 100-120 VAC · PAD · travel to PHOENIX, AZ · in-kind | $6.99 |
| Bard Peripheral Vascular, Inc. May 5, 2025 | Consulting Fee | $9,750 |
| Bard Peripheral Vascular, Inc. Apr 21, 2025 | Consulting Fee | $2,600 |
| Cordis US Corp. Mar 17, 2025 | Travel and Lodging travel to Atlanta, GA | $4,357 |
| Abbott Laboratories Feb 18, 2025 | Consulting Fee PERCLOSE PROSTYLE · Structural Heart | $3,240 |
| Bard Peripheral Vascular, Inc. Feb 13, 2025 | Consulting Fee | $9,750 |
| Abbott Laboratories Feb 4, 2025 | Speaking at a medical education program JETI PERIPHERAL CATHETER · Vascular | $1,500 |
| Abbott Laboratories Feb 4, 2025 | Consulting Fee JETI PERIPHERAL CATHETER · Vascular | $1,000 |
| Abbott Laboratories Jan 14, 2025 | Consulting Fee ESPRIT · Vascular | $1,500 |
| Abbott Laboratories Jan 14, 2025 | Speaking at a medical education program ESPRIT · Vascular | $500 |
| Abbott Laboratories Jan 13, 2025 | Consulting Fee ESPRIT · Vascular | $3,240 |
| Bard Peripheral Vascular, Inc. Jan 2, 2025 | Consulting Fee | $5,850 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.
Industry-funded research
Named as a principal investigator on 7 industry-funded studies in 2025, from 4 companies. The companies reported $411,435 in research payments for these studies, mostly to the institutions running them.
- AGILITY
Bard Peripheral Vascular, Inc. - VENCLOSE
Bard Peripheral Vascular, Inc. - NCT06656364--Esprit BTK Post-Approval Study
Abbott Laboratories - A Comparison of the GORE VIABAHN VBX Balloon Expandable Endoprosthesis (VBX) to Bare Mental Stenting for Patients with Complex Iliac Occlusive Disease
W. L. Gore & Associates, Inc. - NCT04370691--JETi Lower Extremity Arterial Thrombosis
Abbott Laboratories - Misago® RX Self-expanding Peripheral Stent for Common and/or External Iliac Artery
Terumo Medical Corporation · Completed · NCT02793492 - NCT03507777--ILUMIEN IV: OPTIMAL Percutaneous Coronary Intervention (PCI)
Abbott Laboratories
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.