Quick answers
- Which hospitals does Ronald B. Collins Jr. work at?
- Medicare's official clinician data lists Ronald B. Collins Jr. at 2 hospitals: Grinnell Regional Medical Center and Mahaska Health Partnership. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ronald B. Collins Jr. see patients?
- Medicare's clinician data lists 3 practice locations, including Oskaloosa, IA and Grinnell, IA. Call before your visit to confirm the address.
- What is Ronald B. Collins Jr.'s specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Ronald B. Collins Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Ronald B. Collins Jr. 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 Ronald B. Collins Jr.?
- (641) 672-3100, as listed in official Medicare / NPI Registry data.
- What is Ronald B. Collins Jr.'s NPI number?
- 1851592018. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ronald B. Collins Jr. works
Medicare's Facility Affiliation Data lists Ronald B. Collins Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grinnell Regional Medical CenterGrinnell, IA · Acute Care Hospital · CCN 160147
- Mahaska Health PartnershipOskaloosa, IA · Critical Access Hospital · CCN 161379
Practice locations
Addresses where Ronald B. Collins Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 1229 C Ave E, Mahaska HealthOskaloosa, IA 52577 (641) 672‑3100
- 202 4th Ave, Fl 2Grinnell, IA 50112 (641) 236‑2925
- 210 4th AveGrinnell, IA 50112 (641) 236‑7511
Group practices
Medicare enrollment lists Ronald B. Collins Jr. as a member of these groups (CMS data updated 2026-10-02).
- Mahaska County Hospital128 clinicians in the group
- Grinnell Regional Medical Center105 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Oskaloosa
Clinicians with the same Medicare primary specialty in Oskaloosa, IA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851592018 |
| 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