ARNOLD CHA M.D.
NPI 1811320179
Family Medicine in Vancouver, WA
About Arnold Cha M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ARNOLD CHA M.D. (NPI 1811320179) is an individual family medicine provider in Vancouver, Washington, licensed in Oregon (MD190062) and active in the NPI registry since August 2013. He is enrolled in Medicare PECOS, is affiliated with Island Hospital, and maintains a secondary practice location in Delray Beach.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Arnold Cha 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 Reassignments
8Medicare enrollment records show Arnold Cha reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Vancouver, WA 98664
- Reassigned Medicare billing, Washington enrollment
- 915 clinicians in this Medicare group
Gresham, OR 97030
- Reassigned Medicare billing, Oregon and Washington enrollments
- Medicare enrollment name: Kaiser Foundation Health Plan Of The Northwest
- Also billed through NPI 1871848457 (Washington)
- 3,207 clinicians in this Medicare group
Portland, OR 97210
- Reassigned Medicare billing, Washington enrollment
- 69 clinicians in this Medicare group
Milwaukie, OR 97222
- Reassigned Medicare billing, Oregon enrollment
- 229 clinicians in this Medicare group
Oregon City, OR 97045
- Reassigned Medicare billing, Oregon enrollment
- 206 clinicians in this Medicare group
Sublimity, OR 97385
- Reassigned Medicare billing, Oregon enrollment
- 152 clinicians in this Medicare group
Arlington, WA 98223
- Reassigned Medicare billing, Washington enrollment
- 519 clinicians in this Medicare group
Sedro Woolley, WA 98284
- Reassigned Medicare billing, Washington enrollment
- 139 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 3
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Island Hospital
Acute Care Hospitals · Anacortes, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98683 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 8
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
VANCOUVER, WA 98683
VANCOUVER, WA 98683
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 Arnold Cha's NPI number?
The NPI number for Arnold Cha is 1811320179. It was assigned to this individual provider in the NPPES registry on August 9, 2013.
Where is Arnold Cha located?
Arnold Cha practices at 16811 SE Mcgillivray Blvd, Vancouver, WA 98683. The listed phone number is (360) 696-5223.
What is Arnold Cha's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Arnold Cha enrolled in Medicare?
Yes. Arnold Cha 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 organizations bill Medicare for Arnold Cha's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Arnold Cha reassigns Medicare benefits to 8 organizations: South Sound Inpatient Physicians PLLC (Vancouver, WA), Sapphire At Gresham Rehab, LLC (Gresham, OR), Legacy Clinics LLC (Portland, OR), Providence Health & Services Oregon (Milwaukie, OR), Providence Health & Services - Oregon (Oregon City, OR) and 3 more organizations, listed in the Medicare section above. Each 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 Arnold Cha's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Arnold Cha accept?
Health plans from Ambetter Health, Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Arnold Cha 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 Arnold Cha affiliated with any hospitals?
According to CMS data, Arnold Cha is affiliated with Island Hospital.
When was this NPI record last updated?
The NPPES record for Arnold Cha was last updated on September 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Arnold Cha, M.D. · NPI 1811320179
Family Medicine physician in Vancouver, Washington. Individual provider, active in the CMS NPPES registry since August 9, 2013.
## Identity
- **NPI:** 1811320179 (Entity type: Individual)
- **Enumerated:** August 9, 2013
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MD190062 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 16811 SE MCGILLIVRAY BLVD, Vancouver, WA 98683-3404
- **Phone:** (360) 696-5223 · **Fax:** (360) 696-5228
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): South Sound Inpatient Physicians PLLC (NPI 1023285756, Vancouver, WA); Sapphire At Gresham Rehab, LLC (NPI 1033740899, Gresham, OR); Legacy Clinics LLC (NPI 1902827272, Portland, OR); Providence Health & Services Oregon (NPI 1366536963, Milwaukie, OR); Providence Health & Services - Oregon (NPI 1003368911, Oregon City, OR); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** September 9, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1811320179) · Data from the CMS NPPES public registry.