Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Aaron Yosef Lessen

Individual provider Emergency Medicine Physician · NPI 1457535346

Aaron Yosef Lessen is an Emergency Medicine in Englewood, Colorado. Graduated from University of Pittsburgh School of Medicine in 2005, 21 years ago. Practices with Carepoint Emergency Medicine, PLLC, a 158-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona, Colorado and New Mexico.

Years since qualifying
21
Trained at
University of Pittsburgh School of Medicine
Licensed in
AZ, CO, NM
In the registry since
2007
Specialties on file
4
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Practice location Address checks out

501 E Hampden Ave
Englewood, CO 80113-2702
Phone: (303) 788-6911
Fax: (303) 306-7753
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 801 W Maple St, Farmington, NM 87401-5630 — (505) 609-2000

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence DR.0046304 (CO)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 46304 (CO)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MD2025-0938 (NM)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 37825 (AZ)

Record details

NPI number1457535346
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedDecember 27, 2007
Last updated in NPPESNovember 24, 2025
Certification dateNovember 24, 2025
Mailing addressPo Box 173862, Denver, CO 80217-3862

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Carepoint Emergency Medicine, Pllc — 158 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Englewood