SAINT ALPHONSUS MEDICAL CENTER- ONTARIO INC
NPI 1275852337
Emergency Medicine in Ontario, OR

Active since May 27, 2010
351 SW 9TH ST, ONTARIO, OR 97914(541) 881-7000(541) 881-7186 Get Directions Write a Review

NPPES record last updated: September 8, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 8, 2026, Jan 24, 2023, Feb 12, 2022 and 2 more (5 updates tracked since 2018).

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

NPI1275852337
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameSAINT ALPHONSUS MEDICAL CENTER- ONTARIO INC
Location Address351 SW 9TH STOntario, OR 97914-2639
Mailing Address351 Sw 9th StOntario, OR 97914-2639 · (541) 881-7000 · Fax (541) 881-7186
Fax(541) 881-7186
Organization SubpartNo
Authorized OfficialMarcie HarperCfo · (208) 367-7192
Enumeration DateMay 27, 2010
Last NPPES UpdateSeptember 8, 20265 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2026
✔ NPI 1275852337 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
351 SW 9TH ST, Ontario, OR 97914

Other Names 1

Former Legal Business NameTrinity Rosary Medical Center

Other Identifiers 2

Medicaid134311OR
Medicaid00346600ID

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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

49

Medicare 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

Nurse Practitioner11
Obstetrics/Gynecology9
General Surgery7
Pediatric Medicine6
Family Practice4
Orthopedic Surgery3
Emergency Medicine2
Podiatry2
5 other specialties5

Nearest to this location (20)

See all 49
Pathology
NPI 1659319549
351 SW 9TH ST
Ontario, OR 97914
(541) 881-5331
✔ PECOSSame address
Obstetrics/Gynecology
NPI 1124001862
1050 SW 3RD AVE STE 3200
Ontario, OR 97914
(541) 881-2325
✔ PECOS✔ Accepts MedicareSame address
Otolaryngology
NPI 1538144225
1050 SW 3RD AVE STE 1200
Ontario, OR 97914
(541) 881-7451
✔ PECOS✔ Accepts MedicareSame address
General Surgery
NPI 1801892104
1050 SW 3RD AVE STE 2600
Ontario, OR 97914
(541) 881-2330
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1235198995
1077 SW 3RD AVE
Ontario, OR 97914
(541) 889-0771
✔ PECOS✔ Accepts Medicare0.1 mi
General Surgery
NPI 1437240009
351 SW 9TH ST
Ontario, OR 97914
(541) 881-7184
✔ PECOS✔ Accepts Medicare0.1 mi
Obstetrics/Gynecology
NPI 1639328412
351 SW 9TH ST
Ontario, OR 97914
(541) 881-7184
✔ PECOS✔ Accepts Medicare0.1 mi
Family Practice
NPI 1295718096
1050 SW 3RD AVE STE 2600
Ontario, OR 97914
(208) 302-2080
✔ PECOS✔ Accepts Medicare0.1 mi
General Surgery
NPI 1508083635
1050 SW 3RD AVE STE 2600
Ontario, OR 97914
(541) 881-2330
✔ PECOS✔ Accepts Medicare0.1 mi
Nurse Practitioner
NPI 1477015378
1050 SW 3RD AVE STE 2600
Ontario, OR 97914
(208) 302-2080
✔ PECOS✔ Accepts Medicare0.1 mi
Nurse Practitioner
NPI 1346767563
1050 SW 3RD AVE STE 1800
Ontario, OR 97914
(208) 302-0000
✔ PECOS✔ Accepts Medicare0.1 mi
Obstetrics/Gynecology
NPI 1316064512
1050 SW 3RD AVE STE 3200
Ontario, OR 97914
(541) 881-2325
✔ PECOS✔ Accepts Medicare0.1 mi
General Surgery
NPI 1831713924
1050 SW 3RD AVE STE 3201
Ontario, OR 97914
(541) 881-2330
✔ PECOS✔ Accepts Medicare0.1 mi
Orthopedic Surgery
NPI 1922041961
910 NW 16TH ST STE 205
Fruitland, ID 83619
(208) 452-8100
✔ PECOS✔ Accepts Medicare2.6 mi
Podiatry
NPI 1508387028
910 NW 16TH ST STE 102
Fruitland, ID 83619
(208) 452-8150
✔ PECOS✔ Accepts Medicare2.6 mi
Internal Medicine
NPI 1699883447
910 NW 16TH ST STE 102
Fruitland, ID 83619
(208) 452-8015
✔ PECOS✔ Accepts Medicare2.6 mi
Orthopedic Surgery
NPI 1811383524
910 NW 16TH ST STE 205
Fruitland, ID 83619
(208) 452-8100
✔ PECOS✔ Accepts Medicare2.6 mi
Orthopedic Surgery
NPI 1154310597
910 NW 16TH STREET STE 205
Fruitland, ID 83619
(208) 452-3111
✔ PECOS✔ Accepts Medicare2.6 mi
Nurse Practitioner
NPI 1982174199
910 NW 16TH ST STE 101
Fruitland, ID 83619
(208) 452-8000
✔ PECOS✔ Accepts Medicare2.6 mi
Family Practice
NPI 1780078857
910 NW 16TH SUITE 101
Fruitland, ID 83619
(208) 452-8000
✔ PECOS✔ Accepts Medicare2.6 mi
See all 49 clinicians

Source: 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.