DR. BILLY HOON CHANG MD, PHD
NPI 1710921739
Pediatrics - Pediatric Hematology-Oncology in Portland, OR
About Dr. Billy Hoon Chang Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BILLY HOON CHANG MD, PHD (NPI 1710921739) is an individual pediatric hematology-oncology provider in Portland, Oregon, licensed in Oregon (MD24667) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Ohio State University College Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses 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. Billy Hoon Chang Md, Phd 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 Billy Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Portland, OR 97239
- Reassigned Medicare billing, Oregon enrollment
- 2,212 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 4
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.
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 Billy Chang's NPI number?
The NPI number for Billy Chang is 1710921739. It was assigned to this individual provider in the NPPES registry on June 16, 2006.
Where is Billy Chang located?
Billy Chang practices at 3181 SW Sam Jackson Park Rd Mailcode Cdrcp, Doernbecher Childrens Hospital, Portland, OR 97239. The listed phone number is (503) 494-1543.
What is Billy Chang's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Billy Chang enrolled in Medicare?
Yes. Billy Chang 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 Billy Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Billy Chang reassigns Medicare benefits to University Professional Services (Portland, OR). 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 Billy Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Billy Chang was last updated on December 19, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Billy Hoon Chang, MD, PHD · NPI 1710921739
Pediatric Hematology-Oncology physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since June 16, 2006.
## Identity
- **NPI:** 1710921739 (Entity type: Individual)
- **Enumerated:** June 16, 2006
- **Primary specialty:** Pediatrics - Pediatric Hematology-Oncology · taxonomy 2080P0207X
- **State license:** MD24667 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 3181 SW SAM JACKSON PARK RD, MAILCODE CDRCP, DOERNBECHER CHILDRENS HOSPITAL, Portland, OR 97239-3098
- **Phone:** (503) 494-1543 · **Fax:** (503) 494-0714
## 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:** University Professional Services (NPI 1376709535, Portland, OR), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio State University College Of Medicine, class of 2000
## Record status
- **NPPES last updated:** December 19, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1710921739) · Data from the CMS NPPES public registry.