Sunnyside Community Hospital Association
NPI 1912305905 · Rural Health Clinic/Center · Prosser, WA
Enrolled with Medicare as Part a Provider - Rural Health Clinic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sunnyside Community Hospital Association is a Rural Health Clinic/Center organization in Prosser, WA (NPI 1912305905).
Provider details
- NPI number
- 1912305905
- Entity type
- Organization
- Primary specialty
- Rural Health Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Mathew Mathiesen, Cfo(509) 837-1379
Specialties & taxonomies
Ambulatory Health Care Facilities
- Internal Medicine Physician207R00000X
Allopathic & Osteopathic Physicians
- Cardiovascular Disease Physician207RC0000X
Allopathic & Osteopathic Physicians
- Family Medicine Physician207Q00000X
Allopathic & Osteopathic Physicians
- Medical Oncology Physician207RX0202X
Allopathic & Osteopathic Physicians
- Hematology & Oncology Physician207RH0003X
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Other name
- Astria Urgent Care Center
Registry dates
- Enumerated
- 2014-12-08
- Last updated
- 2024-10-10
- Certified
- 2024-10-10
Frequently asked questions
- What is Sunnyside Community Hospital Association's NPI number?
- Sunnyside Community Hospital Association's National Provider Identifier (NPI) is 1912305905, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sunnyside Community Hospital Association?
- Sunnyside Community Hospital Association is classified in the NPPES registry as Rural Health Clinic/Center (Ambulatory Health Care Facilities).
- Where is Sunnyside Community Hospital Association located?
- Sunnyside Community Hospital Association's practice location on file with NPPES is 355 Chardonnay Ave, Prosser, WA 99350-9521.
- What is Sunnyside Community Hospital Association's phone number?
- The practice phone number listed in the NPPES registry for Sunnyside Community Hospital Association is (509) 781-6366.
- Does Sunnyside Community Hospital Association accept Medicare?
- Sunnyside Community Hospital Association is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Sunnyside Community Hospital Association?
- The authorized official listed on Sunnyside Community Hospital Association's NPPES record is Mathew Mathiesen, Cfo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sunnyside Community Hospital Association's NPI active?
- Yes — Sunnyside Community Hospital Association's NPI (1912305905) is active in the NPPES registry as of the last update on 2024-10-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.