Quick answers
- Which hospitals does Mark W. Willis work at?
- Medicare's official clinician data lists Mark W. Willis at 2 hospitals: UCHealth Highlands Ranch Hospital and University of Colorado Hospital Authority. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark W. Willis see patients?
- Medicare's clinician data lists 3 practice locations, including Aurora, CO and Highlands Ranch, CO. Call before your visit to confirm the address.
- What is Mark W. Willis's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Mark W. Willis accept Medicare assignment?
- Yes. Medicare's clinician data says Mark W. Willis 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.
- What is the phone number for Mark W. Willis?
- (720) 848-0000, as listed in official Medicare / NPI Registry data.
- What is Mark W. Willis's NPI number?
- 1649423617. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark W. Willis works
Medicare's Facility Affiliation Data lists Mark W. Willis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UCHealth Highlands Ranch HospitalHighlands Ranch, CO · Acute Care Hospital · CCN 060132
- University of Colorado Hospital AuthorityAurora, CO · Acute Care Hospital · CCN 060024
Practice locations
Addresses where Mark W. Willis is enrolled with Medicare (CMS data updated 2026-10-02).
- 12605 E 16th Ave, Uchealth Anschutz Medical CampusAurora, CO 80045 (720) 848‑0000
- 13123 E 16th AveAurora, CO 80045 (720) 777‑1234
- 1500 Park Central DrHighlands Ranch, CO 80129 (720) 516‑1100
Group practices
Medicare enrollment lists Mark W. Willis as a member of this group (CMS data updated 2026-10-02).
- University Physicians Incorporated3,215 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Aurora
Clinicians with the same Medicare primary specialty in Aurora, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Denver |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649423617 |
| 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