RUTHIE MAY UY CHUA M.D.
NPI 1215208970
Internal Medicine - Rheumatology in Mount Vernon, WA
About Ruthie May Uy Chua M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUTHIE MAY UY CHUA M.D. (NPI 1215208970) is an individual rheumatology provider in Mount Vernon, Washington, licensed in Washington (MD61154719) and active in the NPI registry since January 2012. She is enrolled in Medicare PECOS, is affiliated with Skagit Valley Hospital, and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ruthie May Uy Chua M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Ruthie May Chua reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Mount Vernon, WA 98273
- Reassigned Medicare billing, Washington enrollment
- 463 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Skagit Valley Hospital
Acute Care Hospitals · Mount Vernon, WAIsland Hospital
Acute Care Hospitals · Anacortes, WACascade Valley Hospital
Acute Care Hospitals · Arlington, WAPeacehealth Peace Island Medical Center
Critical Access Hospitals · Friday Harbor, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98273 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MOUNT VERNON, WA 98273
MOUNT VERNON, WA 98273
MOUNT VERNON, WA 98273
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 Ruthie May Chua's NPI number?
The NPI number for Ruthie May Chua is 1215208970. It was assigned to this individual provider in the NPPES registry on January 25, 2012.
Where is Ruthie May Chua located?
Ruthie May Chua practices at 2320 Freeway Dr, Mount Vernon, WA 98273. The listed phone number is (360) 428-2550.
What is Ruthie May Chua's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Ruthie May Chua enrolled in Medicare?
Yes. Ruthie May Chua is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Ruthie May Chua's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruthie May Chua reassigns Medicare benefits to Public Hospital Dist No 1 Skagit (Mount Vernon, WA). The 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 Ruthie May Chua's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ruthie May Chua accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Ruthie May Chua as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ruthie May Chua affiliated with any hospitals?
According to CMS data, Ruthie May Chua is affiliated with Skagit Valley Hospital, Island Hospital, Cascade Valley Hospital and Peacehealth Peace Island Medical Center.
When was this NPI record last updated?
The NPPES record for Ruthie May Chua was last updated on September 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.
# Ruthie May Uy Chua, M.D. · NPI 1215208970
Rheumatology physician in Mount Vernon, Washington. Individual provider, active in the CMS NPPES registry since January 25, 2012.
## Identity
- **NPI:** 1215208970 (Entity type: Individual)
- **Enumerated:** January 25, 2012
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** MD61154719 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 2320 FREEWAY DR, Mount Vernon, WA 98273-5445
- **Phone:** (360) 428-2550 · **Fax:** (360) 428-6402
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Public Hospital Dist No 1 Skagit (NPI 1811460652, Mount Vernon, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** September 21, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1215208970) · Data from the CMS NPPES public registry.