DR. RUBY HOANG DO
NPI 1770976623
Emergency Medicine - Medical Toxicology in Portland, OR
About Dr. Ruby Hoang Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RUBY HOANG DO (NPI 1770976623) is an individual medical toxicology provider in Portland, Oregon, licensed in Oregon (DO205096) and active in the NPI registry since March 2015. She is enrolled in Medicare PECOS, is affiliated with Kaiser Sunnyside Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Locations 2
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
Dr. Ruby Hoang Do 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
2Medicare enrollment records show Ruby Hoang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, OR 97239
- Reassigned Medicare billing, Oregon enrollment
- 2,212 clinicians in this Medicare group
Portland, OR 97209
- Reassigned Medicare billing, Oregon and Washington enrollments
- Also billed through NPI 1871848457 (Washington)
- 3,207 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 2
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Kaiser Sunnyside Medical Center
Acute Care Hospitals · Clackamas, ORKaiser Foundation Hospital Westside
Acute Care Hospitals · Hillsboro, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97239 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.
PORTLAND, OR 97239
PORTLAND, OR 97239
PORTLAND, OR 97239
PORTLAND, OR 97239
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 Ruby Hoang's NPI number?
The NPI number for Ruby Hoang is 1770976623. It was assigned to this individual provider in the NPPES registry on March 16, 2015. The provider is also known as Hang Hoang.
Where is Ruby Hoang located?
Ruby Hoang practices at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. The listed phone number is (503) 494-8600.
What is Ruby Hoang's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Medical Toxicology, with taxonomy code 207PT0002X.
Is Ruby Hoang enrolled in Medicare?
Yes. Ruby Hoang 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 Ruby Hoang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruby Hoang reassigns Medicare benefits to 2 organizations: University Professional Services (Portland, OR) and Kaiser Foundation Health Plan Of The Northwest (Portland, OR). 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 Ruby Hoang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ruby Hoang affiliated with any hospitals?
According to CMS data, Ruby Hoang is affiliated with Kaiser Sunnyside Medical Center and Kaiser Foundation Hospital Westside.
When was this NPI record last updated?
The NPPES record for Ruby Hoang was last updated on June 3, 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.
# Dr. Ruby Hoang, DO · NPI 1770976623
Medical Toxicology physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since March 16, 2015.
## Identity
- **NPI:** 1770976623 (Entity type: Individual)
- **Enumerated:** March 16, 2015
- **Primary specialty:** Emergency Medicine - Medical Toxicology · taxonomy 207PT0002X
- **State license:** DO205096 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 3181 SW SAM JACKSON PARK RD, Portland, OR 97239-3011
- **Phone:** (503) 494-8600 · **Fax:** (503) 494-4997
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Professional Services (NPI 1073767588, Portland, OR); Kaiser Foundation Health Plan Of The Northwest (NPI 1649722034, Portland, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** June 3, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1770976623) · Data from the CMS NPPES public registry.