Quick answers
- Which hospitals does William K. Barnhill work at?
- Medicare's official clinician data lists William K. Barnhill at 5 hospitals: Cass County Memorial Hospital, Decatur County Hospital, Greene County Medical Center, Grundy County Memorial Hospital and Story County Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William K. Barnhill see patients?
- Medicare's clinician data lists 1 practice location in Atlantic, IA. Call before your visit to confirm the address.
- What is William K. Barnhill's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does William K. Barnhill accept Medicare assignment?
- Yes. Medicare's clinician data says William K. Barnhill 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 William K. Barnhill?
- (712) 243-3250, as listed in official Medicare / NPI Registry data.
- What is William K. Barnhill's NPI number?
- 1710962519. 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 K. Barnhill works
Medicare's Facility Affiliation Data lists William K. Barnhill at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cass County Memorial HospitalAtlantic, IA · Critical Access Hospital · CCN 161376
- Decatur County HospitalLeon, IA · Critical Access Hospital · CCN 161340
- Greene County Medical CenterJefferson, IA · Critical Access Hospital · CCN 161325
- Grundy County Memorial HospitalGrundy Center, IA · Critical Access Hospital · CCN 161303
- Story County HospitalNevada, IA · Critical Access Hospital · CCN 161333
Practice locations
Addresses where William K. Barnhill is enrolled with Medicare (CMS data updated 2026-10-02).
- 1501 E 10th StAtlantic, IA 50022 (712) 243‑3250
Group practices
Medicare enrollment lists William K. Barnhill as a member of this group (CMS data updated 2026-10-02).
- Cass County Memorial Hospital68 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Iowa →
Other nurse anesthetists in Atlantic
Clinicians with the same Medicare primary specialty in Atlantic, IA — not a recommendation.
Clinician information
| Graduation year | 1991 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1710962519 |
| 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