Mark Thomas Holley, M.D.
NPI 1588673107ActiveIndividual· Emergency Medicine, Emergency Medical Services· Denver, CO
Emergency Medicine, Emergency Medical Services (M.D.) with Usacs Community Emergency Services of Colorado Inc., practicing in Denver, Colorado. 176 Medicare patients in 2024, $20,666 paid; nearly all of their 178 Part D prescriptions were generic (92%). Lists Adventhealth Littleton as a hospital affiliation.
Overview
| NPI | 1588673107 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 5, 2006 |
| Last updated in NPPES | Apr 30, 2021 |
| Certified by provider | Apr 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine, Emergency Medical Services Primary | 207PE0004X | 36330 | CO |
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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 176 |
|---|---|
| Services billed | 218 across 25 procedure codes |
| Paid by Medicare | $20,666 |
Part D prescriptions in 2024
| Prescriptions (claims) | 178 · 180 30-day fills |
|---|---|
| Patients | 145 |
| Total drug cost | $3,799 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical group
- Usacs Community Emergency Services of Colorado Inc.Arvada, CO · 175 clinicians
Hospital affiliation
- Adventhealth LittletonLittleton, CO
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 18 Emergency Medicine, Emergency Medical Services providers in Denver · All Emergency Medicine, Emergency Medical Services providers in Colorado