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ANDREA LOPEZ CHEN M.D.
NPI 1184773434
Pediatrics in Clackamas, OR

Active since January 09, 2007PECOS Enrolled
9800 SE SUNNYSIDE RD, CLACKAMAS, OR 97015(503) 652-2880 Get Directions Write a Review

NPPES record last updated: January 9, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 9, 2023, Feb 10, 2022, Jun 19, 2017 and 2 more (5 updates tracked since 2016).

About Andrea Lopez Chen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ANDREA LOPEZ CHEN M.D. (NPI 1184773434) is an individual pediatrics provider in Clackamas, Oregon, licensed in Oregon (MD181098) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184773434
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameANDREA LOPEZ CHENCredential: M.D.
Location Address9800 SE SUNNYSIDE RDClackamas, OR 97015-9750
Mailing Address7201 N Interstate AvePortland, OR 97217-5523 · (503) 286-6839
Phone(503) 652-2880
Sole ProprietorNo
Enumeration DateJanuary 9, 2007
Last NPPES UpdateJanuary 9, 20235 updates tracked since enumeration
NPPES CertifiedJanuary 9, 2023
✔ NPI 1184773434 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in OR · MD181098✔ Licensed in WA · MD60721872✔ Licensed in SC · 30731✔ Licensed in TX · Q6767✔ Licensed in FL · TRN9227
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
9800 SE SUNNYSIDE RD, Clackamas, OR 97015
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Other Identifiers 2

Medicaid357042601TX
Medicaid357042602TX

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Andrea Lopez Chen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Andrea Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kaiser Foundation Health Plan Of The Northwest
0.1 mi
Sleep Disorder Diagnostic
9717 SE SUNNYSIDE RD, 3RD FLOOR
Clackamas, OR 97015
  • Reassigned Medicare billing, Oregon and Washington enrollments
  • Also billed through NPI 1871848457 (Washington)
  • 3,207 clinicians in this Medicare group
NPI 1174851505 (503) 659-2454

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.

New Patient
$90.51 typical visit price
range $58.99 – $176.88
Typical copayment $22.62 (range $14.74 – $44.22)
Most-billed visit code 99203
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

ASHLEY R JORDAN
Nurse Practitioner (Family)
9800 SE SUNNYSIDE RD
CLACKAMAS, OR 97015
Clackamas County (800) 813-2000
MICHAEL HOLLENBACK P.A.-C.
Physician Assistant (Surgical)
9800 SE SUNNYSIDE RD
CLACKAMAS, OR 97015
Clackamas County (503) 653-6440
DR. CALVERT JOHN SHIPLEY M.D.
Family Medicine
9800 SE SUNNYSIDE RD
CLACKAMAS, OR 97015
Clackamas County (503) 653-6440
JAY JOO M.D.
Pediatrics
9800 SE SUNNYSIDE RD
CLACKAMAS, OR 97015
Clackamas County (503) 813-2000
TRISHA ZANDER
Student in an Organized Health Care Education/Training Program
9800 SE SUNNYSIDE RD
CLACKAMAS, OR 97015
Clackamas County (503) 813-1319
NATASHA WARIKOO PHD
Student in an Organized Health Care Education/Training Program
9800 SE SUNNYSIDE RD
CLACKAMAS, OR 97015
Clackamas County (800) 813-2000
THANH VAN HOANG PHARMD
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
9800 SE SUNNYSIDE RD
CLACKAMAS, OR 97015
Clackamas County (503) 571-8879
HANNAH LARSEN
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
9800 SE SUNNYSIDE RD
CLACKAMAS, OR 97015
Clackamas County (503) 571-8879

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 Andrea Chen's NPI number?

The NPI number for Andrea Chen is 1184773434. It was assigned to this individual provider in the NPPES registry on January 9, 2007.

Where is Andrea Chen located?

Andrea Chen practices at 9800 SE Sunnyside Rd, Clackamas, OR 97015. The listed phone number is (503) 652-2880.

What is Andrea Chen's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Andrea Chen enrolled in Medicare?

Yes. Andrea Chen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Andrea Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrea Chen 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 Andrea Chen'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 Andrea Chen was last updated on January 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.