DR. CHRISTINE RYU MD
NPI 1821615808
Ophthalmology in Lake Oswego, OR
About Dr. Christine Ryu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTINE RYU MD (NPI 1821615808) is an individual ophthalmology provider in Lake Oswego, Oregon, licensed in Oregon (MD229531) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and maintains a secondary practice location in Portland.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Dr. Christine Ryu 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
2Medicare enrollment records show Christine Ryu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Des Peres, MO 63131
- Reassigned Medicare billing, Missouri enrollment
- 7 clinicians in this Medicare group
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 105 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Barnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97035 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Christine Ryu's NPI number?
The NPI number for Christine Ryu is 1821615808. It was assigned to this individual provider in the NPPES registry on June 25, 2020.
Where is Christine Ryu located?
Christine Ryu practices at 9 Monroe Pkwy Ste 160, Lake Oswego, OR 97035. The listed phone number is (503) 636-2551.
What is Christine Ryu's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Christine Ryu enrolled in Medicare?
Yes. Christine Ryu 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 Christine Ryu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christine Ryu reassigns Medicare benefits to 2 organizations: Ophthalmic Plastic & Cosmetic Surgery, Inc. (Des Peres, MO) and Washington University (Saint Louis, MO). 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 Christine Ryu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christine Ryu accept?
Health plans from Anthem Blue Cross and Blue Shield and Providence Health Plan list Christine Ryu 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 Christine Ryu affiliated with any hospitals?
According to CMS data, Christine Ryu is affiliated with Barnes Jewish Hospital.
When was this NPI record last updated?
The NPPES record for Christine Ryu was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Christine Ryu, MD · NPI 1821615808
Ophthalmology physician in Lake Oswego, Oregon. Individual provider, active in the CMS NPPES registry since June 25, 2020.
## Identity
- **NPI:** 1821615808 (Entity type: Individual)
- **Enumerated:** June 25, 2020
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** MD229531 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 9 MONROE PKWY STE 160, Lake Oswego, OR 97035-8863
- **Phone:** (503) 636-2551 · **Fax:** (503) 363-3055
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Ophthalmic Plastic & Cosmetic Surgery, Inc. (NPI 1942497805, Des Peres, MO); Washington University (NPI 1841221116, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Southern California Keck School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** August 12, 2026
- **Other identifiers:** Medicaid 200142568 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1821615808) · Data from the CMS NPPES public registry.