DR. MATTHEW AARON FELLIN M.D.
NPI 1740625300
Emergency Medicine in Clackamas, OR
About Dr. Matthew Aaron Fellin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MATTHEW AARON FELLIN M.D. (NPI 1740625300) is an individual emergency medicine provider in Clackamas, Oregon, licensed in Oregon (MD182304) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS and maintains a secondary practice location in Washington.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Matthew Aaron Fellin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Matthew Fellin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Clackamas, OR 97015
- 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97015 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.
CLACKAMAS, OR 97015
CLACKAMAS, OR 97015
CLACKAMAS, OR 97015
CLACKAMAS, OR 97015
CLACKAMAS, OR 97015
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 Matthew Fellin's NPI number?
The NPI number for Matthew Fellin is 1740625300. It was assigned to this individual provider in the NPPES registry on May 8, 2013.
Where is Matthew Fellin located?
Matthew Fellin practices at 10180 SE Sunnyside Rd, Clackamas, OR 97015. The listed phone number is (800) 813-2000.
What is Matthew Fellin's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Matthew Fellin enrolled in Medicare?
Yes. Matthew Fellin is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Matthew Fellin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Fellin reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Northwest (Clackamas, 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 Matthew Fellin'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 Matthew Fellin was last updated on December 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.