Quick answers
- Which hospitals does Ehrin J. Armstrong work at?
- Medicare's official clinician data lists Ehrin J. Armstrong at 5 hospitals: Haxtun Hospital District, HCA HealthONE Rose, Hca-Healthone dba Swedish Medical Center, Keefe Memorial Hospital and The Medical Center of Aurora & South Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ehrin J. Armstrong see patients?
- Medicare's clinician data lists 6 practice locations, including Haxtun, CO and Cheyenne Wells, CO. Call before your visit to confirm the address.
- What is Ehrin J. Armstrong's specialty?
- Medicare lists Interventional Cardiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Ehrin J. Armstrong accept Medicare assignment?
- Yes. Medicare's clinician data says Ehrin J. Armstrong accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Ehrin J. Armstrong offer telehealth?
- Medicare's clinician data says Ehrin J. Armstrong offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ehrin J. Armstrong?
- (970) 774-6123, as listed in official Medicare / NPI Registry data.
- What is Ehrin J. Armstrong's NPI number?
- 1699733634. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ehrin J. Armstrong works
Medicare's Facility Affiliation Data lists Ehrin J. Armstrong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Haxtun Hospital DistrictHaxtun, CO · Critical Access Hospital · CCN 061304
- HCA HealthONE RoseDenver, CO · Acute Care Hospital · CCN 060032
- Hca-Healthone dba Swedish Medical CenterEnglewood, CO · Acute Care Hospital · CCN 060034
- Keefe Memorial HospitalCheyenne Wells, CO · Critical Access Hospital · CCN 061343
- The Medical Center of Aurora & South HospitalAurora, CO · Acute Care Hospital · CCN 060100
Practice locations
Addresses where Ehrin J. Armstrong is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 235 W Fletcher StHaxtun, CO 80731 (970) 774‑6123
- 602 N 6th St WCheyenne Wells, CO 80810 (719) 767‑5661
- 602 N 6th St W, Keefe Memorial HospitalCheyenne Wells, CO 80810 (719) 767‑5661
- 615 W 5th St NCheyenne Wells, CO 80810 (719) 767‑5669
- PO BoxCheyenne Wells, CO 80810
Group practices
Medicare enrollment lists Ehrin J. Armstrong as a member of these groups (CMS data updated 2026-10-02).
- HealthONE Heart Care LLC49 clinicians in the group
- Keefe Memorial Health Service District21 clinicians in the group
Specialties
Other interventional cardiologists in Colorado
Clinicians with the same Medicare primary specialty in Colorado — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1699733634 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians