AARON CHAMBERS MD
NPI 1215513999
Family Medicine in Portland, OR
About Aaron Chambers Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AARON CHAMBERS MD (NPI 1215513999) is an individual family medicine provider in Portland, Oregon, licensed in Oregon (MD219142) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS, is affiliated with Ohsu Hospital And Clinics, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
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
Aaron Chambers Md 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
3Medicare enrollment records show Aaron Chambers reassigns Medicare billing to 3 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 enrollment
- 3,207 clinicians in this Medicare group
Hillsboro, OR 97123
- Reassigned Medicare billing, Oregon enrollment
- 691 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
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.
Ohsu Hospital And Clinics
Acute Care Hospitals · Portland, ORHillsboro Medical Center
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 Aaron Chambers's NPI number?
The NPI number for Aaron Chambers is 1215513999. It was assigned to this individual provider in the NPPES registry on March 22, 2021.
Where is Aaron Chambers located?
Aaron Chambers practices at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. The listed phone number is (503) 494-8211.
What is Aaron Chambers's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Aaron Chambers enrolled in Medicare?
Yes. Aaron Chambers 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 Aaron Chambers's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Chambers reassigns Medicare benefits to 3 organizations: University Professional Services (Portland, OR), Kaiser Foundation Health Plan Of The Northwest (Portland, OR) and Tuality Medical Group LLC (Hillsboro, 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 Aaron Chambers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Aaron Chambers accept?
Health plans from Moda Health Plan, Inc., PacificSource Health Plans and Providence Health Plan list Aaron Chambers 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 Aaron Chambers affiliated with any hospitals?
According to CMS data, Aaron Chambers is affiliated with Ohsu Hospital And Clinics and Hillsboro Medical Center.
When was this NPI record last updated?
The NPPES record for Aaron Chambers was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 days 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.
# Aaron Chambers, MD · NPI 1215513999
Family Medicine physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since March 22, 2021.
## Identity
- **NPI:** 1215513999 (Entity type: Individual)
- **Enumerated:** March 22, 2021
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MD219142 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 3181 SW SAM JACKSON PARK RD, Portland, OR 97239-3098
- **Phone:** (503) 494-8211
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): University Professional Services (NPI 1376709535, Portland, OR); Kaiser Foundation Health Plan Of The Northwest (NPI 1649722034, Portland, OR); Tuality Medical Group LLC (NPI 1639690704, Hillsboro, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** October 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1215513999) · Data from the CMS NPPES public registry.