Quick answers
- Which hospitals does Jonathan W. Willoughby work at?
- Medicare's official clinician data lists Jonathan W. Willoughby at 1 hospital: Mercy Medical Center - Cedar Rapids. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan W. Willoughby see patients?
- Medicare's clinician data lists 3 practice locations, including Cedar Rapids, IA and Iowa City, IA. Call before your visit to confirm the address.
- What is Jonathan W. Willoughby's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Jonathan W. Willoughby accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan W. Willoughby 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 Jonathan W. Willoughby?
- (319) 247-3010, as listed in official Medicare / NPI Registry data.
- What is Jonathan W. Willoughby's NPI number?
- 1841973443. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan W. Willoughby works
Medicare's Facility Affiliation Data lists Jonathan W. Willoughby at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Medical Center - Cedar RapidsCedar Rapids, IA · Acute Care Hospital · CCN 160079
Practice locations
Addresses where Jonathan W. Willoughby is enrolled with Medicare (CMS data updated 2026-10-02).
- 202 10th St SECedar Rapids, IA 52403 (319) 247‑3010
- 275 10th St SECedar Rapids, IA 52403 (319) 247‑3010
- 500 E Market StIowa City, IA 52245 (319) 339‑0300
Group practices
Medicare enrollment lists Jonathan W. Willoughby as a member of these groups (CMS data updated 2026-10-02).
- Physicians Clinic of Iowa PC135 clinicians in the group
- Johnson County Emergency Medicine PLC30 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Cedar Rapids
Clinicians with the same Medicare primary specialty in Cedar Rapids, IA — not a recommendation.
Clinician information
| Graduation year | 2025 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841973443 |
| 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