Quick answers
- Which hospitals does William D. Clark work at?
- Medicare's official clinician data lists William D. Clark at 1 hospital: University of Iowa Hospital & Clinics. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William D. Clark see patients?
- Medicare's clinician data lists 3 practice locations, including Mason City, IA and Coralville, IA. Call before your visit to confirm the address.
- What is William D. Clark's specialty?
- Medicare lists Hospice/Palliative Care as the primary specialty, and also Family Practice.
- Does William D. Clark accept Medicare assignment?
- Medicare's clinician data says William D. Clark may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is William D. Clark's NPI number?
- 1083639140. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William D. Clark works
Medicare's Facility Affiliation Data lists William D. Clark at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- University of Iowa Hospital & ClinicsIowa City, IA · Acute Care Hospital · CCN 160058
Practice locations
Addresses where William D. Clark is enrolled with Medicare (CMS data updated 2026-10-02).
- 101 S Taylor Ave, PCMason City, IA 50401
- 3281 Ridgeway DrCoralville, IA 52241
- 621 S Illinois Ave, Suite 103Mason City, IA 50401
Specialties
- Hospice/Palliative Careprimary
- Family Practicealso
Other palliative care doctors in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1083639140 |
| 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