DR. EMMA KRYSTYNA LARSON MD
NPI 1477013894
Pediatrics in Portland, OR
About Dr. Emma Krystyna Larson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. EMMA KRYSTYNA LARSON MD (NPI 1477013894) is an individual pediatrics provider in Portland, Oregon, licensed in Washington (MD61305688) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Emma Krystyna Larson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Emma Larson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- Medicare enrollment name: The Association Of Chrmc And University Physicians
- 1,443 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 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 97227 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 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
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 Emma Larson's NPI number?
The NPI number for Emma Larson is 1477013894. It was assigned to this individual provider in the NPPES registry on March 21, 2019.
Where is Emma Larson located?
Emma Larson practices at 3550 N Interstate Ave, Portland, OR 97227. The listed phone number is (503) 813-2000.
What is Emma Larson's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Emma Larson enrolled in Medicare?
Yes. Emma Larson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Emma Larson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Emma Larson reassigns Medicare benefits to 2 organizations: Association Of Chmc And University Physicians (Seattle, WA) and The Association Of University Physicians (Seattle, WA). 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 Emma Larson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Emma Larson accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Emma Larson 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.
When was this NPI record last updated?
The NPPES record for Emma Larson was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 60 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.
# Dr. Emma Krystyna Larson, MD · NPI 1477013894
Pediatrics physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since March 21, 2019.
## Identity
- **NPI:** 1477013894 (Entity type: Individual)
- **Enumerated:** March 21, 2019
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** MD61305688 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 3550 N INTERSTATE AVE, Portland, OR 97227-1196
- **Phone:** (503) 813-2000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Association Of Chmc And University Physicians (NPI 1215153671, Seattle, WA); The Association Of University Physicians (NPI 1023041159, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 16, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1477013894) · Data from the CMS NPPES public registry.