SOPHANA KARNCHANASORN MD
NPI 1710165303
Hospitalist in Portland, OR
About Sophana Karnchanasorn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SOPHANA KARNCHANASORN MD (NPI 1710165303) is an individual hospitalist provider in Portland, Oregon, licensed in Oregon (MD178284) and active in the NPI registry since February 2008. She is enrolled in Medicare PECOS, is affiliated with Mckenzie-willamette Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 3
Other Identifiers 1
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
Sophana Karnchanasorn 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
16Medicare enrollment records show Sophana Karnchanasorn reassigns Medicare billing to 16 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 97210
- Reassigned Medicare billing, Oregon enrollment
- 1,248 clinicians in this Medicare group
Portland, OR 97213
- Reassigned Medicare billing, Oregon enrollment
- 676 clinicians in this Medicare group
Portland, OR 97225
- Reassigned Medicare billing, Oregon enrollment
- 753 clinicians in this Medicare group
Vancouver, WA 98664
- Reassigned Medicare billing, Washington and Oregon enrollments
- Also billed through NPI 1053578237 (Oregon)
- 915 clinicians in this Medicare group
Hillsboro, OR 97123
- Reassigned Medicare billing, Oregon enrollment
- 691 clinicians in this Medicare group
Hillsboro, OR 97123
- Reassigned Medicare billing, Oregon enrollment
- 185 clinicians in this Medicare group
Medford, OR 97504
- Reassigned Medicare billing, Oregon enrollment
- 311 clinicians in this Medicare group
Klamath Falls, OR 97601
- Reassigned Medicare billing, Oregon enrollment
- 355 clinicians in this Medicare group
Mansfield, TX 76063
- Reassigned Medicare billing, Texas enrollment
- 994 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 4
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.
Mckenzie-Willamette Medical Center
Acute Care Hospitals · Springfield, ORHarrison Medical Center
Acute Care Hospitals · Bremerton, WAPhysician 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.
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.
Reported Quality Measures
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 Sophana Karnchanasorn's NPI number?
The NPI number for Sophana Karnchanasorn is 1710165303. It was assigned to this individual provider in the NPPES registry on February 5, 2008.
Where is Sophana Karnchanasorn located?
Sophana Karnchanasorn practices at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. The listed phone number is (503) 494-1164.
What is Sophana Karnchanasorn's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Sophana Karnchanasorn enrolled in Medicare?
Yes. Sophana Karnchanasorn 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 Sophana Karnchanasorn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sophana Karnchanasorn reassigns Medicare benefits to 16 organizations: University Professional Services (Portland, OR), Legacy Clinics LLC (Portland, OR), Providence Health & Services - Oregon (Portland, OR), Providence Health & Services - Oregon (Portland, OR), South Sound Inpatient Physicians PLLC (Vancouver, WA) and 11 more organizations, listed in the Medicare section above. 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 Sophana Karnchanasorn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sophana Karnchanasorn accept?
Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, CareSource, Moda Health Plan, Inc. and Providence Health Plan list Sophana Karnchanasorn 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 Sophana Karnchanasorn affiliated with any hospitals?
According to CMS data, Sophana Karnchanasorn is affiliated with Mckenzie-Willamette Medical Center and Harrison Medical Center.
When was this NPI record last updated?
The NPPES record for Sophana Karnchanasorn was last updated on January 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Sophana Karnchanasorn, MD · NPI 1710165303
Hospitalist physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since February 5, 2008.
## Identity
- **NPI:** 1710165303 (Entity type: Individual)
- **Enumerated:** February 5, 2008
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** MD178284 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 3181 SW SAM JACKSON PARK RD, Portland, OR 97239-3011
- **Phone:** (503) 494-1164 · **Fax:** (503) 494-5502
## 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:** 16 organizations under Medicare reassignment (form CMS-855R): University Professional Services (NPI 1376709535, Portland, OR); Legacy Clinics LLC (NPI 1902827272, Portland, OR); Providence Health & Services - Oregon (NPI 1003991845, Portland, OR); Providence Health & Services - Oregon (NPI 1114015971, Portland, OR); South Sound Inpatient Physicians PLLC (NPI 1023285756, Vancouver, WA); and 11 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** January 22, 2026
- **Other identifiers:** Medicaid 500606452 (OR)
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Source: [NPI Profile](https://npiprofile.com/npi/1710165303) · Data from the CMS NPPES public registry.