Quick answers
- Which hospitals does Derrick Alger work at?
- Medicare's official clinician data lists Derrick Alger at 1 hospital: Mercy Medical Center - Cedar Rapids. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Derrick Alger see patients?
- Medicare's clinician data lists 2 practice locations, including Mason City, IA and Cedar Rapids, IA. Call before your visit to confirm the address.
- What is Derrick Alger's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Derrick Alger accept Medicare assignment?
- Yes. Medicare's clinician data says Derrick Alger 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 Derrick Alger?
- (641) 428-6615, as listed in official Medicare / NPI Registry data.
- What is Derrick Alger's NPI number?
- 1477082915. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Derrick Alger works
Medicare's Facility Affiliation Data lists Derrick Alger 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 Derrick Alger is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 4th St SWMason City, IA 50401 (641) 428‑6615
- 701 10th St SECedar Rapids, IA 52403 (319) 861‑7803
Group practices
Medicare enrollment lists Derrick Alger as a member of this group (CMS data updated 2026-10-02).
- Cogent Healthcare of Iowa PC61 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Mason City
Clinicians with the same Medicare primary specialty in Mason City, IA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477082915 |
| 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