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ARIEL M PIERRON AGNP
NPI 1154081974
Nurse Practitioner - Adult Health in Clackamas, OR

Active since December 20, 2021PECOS EnrolledAccepts Medicare Assignment
9800 SE SUNNYSIDE RD, CLACKAMAS, OR 97015(800) 813-2000 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 7, 2026, Jun 13, 2024, Feb 7, 2023 and 1 more (4 updates tracked since 2021).

About Ariel M Pierron Agnp NPPES

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

ARIEL M PIERRON AGNP (NPI 1154081974) is an individual adult health provider in Clackamas, Oregon, licensed in Oregon (10005468) and active in the NPI registry since December 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1154081974
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameARIEL M PIERRONCredential: AGNP
Location Address9800 SE SUNNYSIDE RDClackamas, OR 97015-9750
Mailing Address500 Ne Multnomah St Ste 100Portland, OR 97232-2099 · (800) 813-2000
Phone(800) 813-2000
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateDecember 20, 2021
Last NPPES UpdateMay 7, 20264 updates tracked since enumeration
NPPES CertifiedMay 7, 2026
✔ NPI 1154081974 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License✔ Licensed in OR · 10005468
9800 SE SUNNYSIDE RD, Clackamas, OR 97015
Open in Google Maps ↗

Other Names 1

Former Name (1)Ariel Davis

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Kaiser Permanente.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

Ariel M Pierron Agnp 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.

PECOS PAC ID3173980141
PECOS Enrollment IDI20230606003263, I20230815003387
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 Ariel Pierron 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 Ariel Pierron's NPI number?

The NPI number for Ariel Pierron is 1154081974. It was assigned to this individual provider in the NPPES registry on December 20, 2021. The provider is also known as Ariel Davis.

Where is Ariel Pierron located?

Ariel Pierron practices at 9800 SE Sunnyside Rd, Clackamas, OR 97015. The listed phone number is (800) 813-2000.

What is Ariel Pierron's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Is Ariel Pierron enrolled in Medicare?

Yes. Ariel Pierron 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 organization bills Medicare for Ariel Pierron's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ariel Pierron 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 Ariel Pierron's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ariel Pierron accept?

Health plans from Kaiser Permanente list Ariel Pierron 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 Ariel Pierron was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.