SAINT ALPHONSUS MEDICAL CENTER- ONTARIO INC
NPI 1275852337
Emergency Medicine in Ontario, OR
About Saint Alphonsus Medical Center- Ontario Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SAINT ALPHONSUS MEDICAL CENTER- ONTARIO INC (NPI 1275852337), doing business as Trinity Rosary Medical Center, is a healthcare organization registered as an emergency medicine in Ontario, Oregon and active in the NPI registry since May 2010. The organization lists Marcie Harper, Cfo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Saint Alphonsus Medical Center- Ontario Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
49Medicare enrollment records show 49 clinicians reassign Medicare billing to Saint Alphonsus Medical Center- Ontario Inc, which bills Medicare for the services they deliver. Of these, 4 practice at this address and 20 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 13
Nearest to this location (20)
See all 49Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Saint Alphonsus Medical Center- Ontario Inc's NPI number?
The NPI number for Saint Alphonsus Medical Center- Ontario Inc is 1275852337. It was assigned to this organization in the NPPES registry on May 27, 2010. The provider was formerly known as Trinity Rosary Medical Center.
Where is Saint Alphonsus Medical Center- Ontario Inc located?
Saint Alphonsus Medical Center- Ontario Inc is located at 351 SW 9th St, Ontario, OR 97914. The listed phone number is (541) 881-7000.
What is Saint Alphonsus Medical Center- Ontario Inc's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Saint Alphonsus Medical Center- Ontario Inc enrolled in Medicare?
Yes. Saint Alphonsus Medical Center- Ontario Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Saint Alphonsus Medical Center- Ontario Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 49 clinicians in 13 Medicare specialties reassign their Medicare billing to Saint Alphonsus Medical Center- Ontario Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (11), Obstetrics/Gynecology (9) and General Surgery (7). Of these, 4 practice at this address and 20 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Saint Alphonsus Medical Center- Ontario Inc was last updated on September 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 60 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.