Mark Willis, M.D.
NPI 1649423617ActiveIndividual· Otolaryngology, Plastic Surgery within the Head & Neck· Highlands Ranch, CO
Otolaryngology, Plastic Surgery within the Head & Neck (M.D.) in Highlands Ranch, Colorado, trained at University of Colorado School of Medicine, Denver (class of 2007). 350 Medicare patients in 2024, $78,334 paid; nearly all of their 314 Part D prescriptions were generic (99%). Aerin Medical Inc. reported $93.17 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1649423617 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 3, 2008 |
| Last updated in NPPES | Dec 23, 2025 |
| Certified by provider | Dec 23, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Otolaryngology, Plastic Surgery within the Head & Neck Primary | 207YX0007X | 51080 | CO |
| Otolaryngology | 207Y00000X | 51080 | 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 - Otolaryngology (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 350 |
|---|---|
| Services billed | 771 across 54 procedure codes |
| Paid by Medicare | $78,334 |
Part D prescriptions in 2024
| Prescriptions (claims) | 314 · 523 30-day fills |
|---|---|
| Patients | 140 |
| Total drug cost | $5,103 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | University of Colorado School of Medicine, Denver |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Otolaryngology |
Medical group
- University Physicians IncorporatedAurora, CO · 3,215 clinicians
Hospital affiliations
- Uchealth Highlands Ranch HospitalHighlands Ranch, CO
- University of Colorado Hospital AuthorityAurora, CO
Industry payments (Open Payments)
- 2025$93.17 · 1 payment from 1 company
- 2024$42.76 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aerin Medical Inc. | $93.17 | 1 |
What the 2025 payments were for
- Food and Beverage$93.17 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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