Aaron Yosef Lessen
NPI 1457535346ActiveIndividual· Emergency Medicine· Englewood, CO
Emergency Medicine in Englewood, Colorado, trained at University of Pittsburgh School of Medicine (class of 2005). 388 Medicare patients in 2024, $55,068 paid; nearly all of their 176 Part D prescriptions were generic (97%). Ceribell, Inc. reported $110.78 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1457535346 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Dec 27, 2007 |
| Last updated in NPPES | Nov 24, 2025 |
| Certified by provider | Nov 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | DR.0046304 | CO |
| Emergency Medicine | 207P00000X | 46304 | CO |
| Emergency Medicine | 207P00000X | MD2025-0938 | NM |
| Emergency Medicine | 207P00000X | 37825 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (CO); Practitioner - Emergency Medicine (NM) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 388 |
|---|---|
| Services billed | 679 across 32 procedure codes |
| Paid by Medicare | $55,068 |
Part D prescriptions in 2024
| Prescriptions (claims) | 176 · 178 30-day fills |
|---|---|
| Patients | 133 |
| Total drug cost | $1,447 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Emergency Medicine |
Medical groups
- San Juan Regional Medical Center, Inc.Farmington, NM · 241 clinicians
- Carepoint Emergency Medicine, PLLCEnglewood, CO · 161 clinicians
- Gunnison Valley HospitalGunnison, CO · 85 clinicians
Hospital affiliations
- Gunnison Valley HospitalGunnison, CO
- Hca-Healthone DBA Swedish Medical CenterEnglewood, CO
- San Juan Regional Medical Center IncFarmington, NM
Industry payments (Open Payments)
- 2024$110.78 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Ceribell, Inc. | $110.78 | 1 |
What the 2024 payments were for
- Food and Beverage$110.78 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 40 emergency medicine physicians in Englewood · All emergency medicine physicians in Colorado