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MS. LARISSA CHRISTINE IENNA FNP
NPI 1679766224
Nurse Practitioner - Family in Saint Helens, OR

Active since August 27, 2007PECOS Enrolled
500 N COLUMBIA RIVER HWY, SAINT HELENS, OR 97051(503) 397-0471(503) 366-5519 Get Directions Write a Review

NPPES record last updated: February 21, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ms. Larissa Christine Ienna Fnp NPPES

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

MS. LARISSA CHRISTINE IENNA FNP (NPI 1679766224) is an individual family provider in Saint Helens, Oregon, licensed in Oregon (200850116) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679766224
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMS. LARISSA CHRISTINE IENNACredential: FNP
Location Address500 N COLUMBIA RIVER HWYSaint Helens, OR 97051-1299
Mailing Address1040 Nw 22nd Ave #520Portland, OR 97210 · (503) 413-7557
Phone(503) 397-0471
Fax(503) 366-5519
Sole ProprietorNo
Enumeration DateAugust 27, 2007
Last NPPES UpdateFebruary 21, 2017
✔ NPI 1679766224 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in OR · 200850116
Also ListedRegistered NurseTaxonomy 163W00000X · License 200340678 (OR)
500 N COLUMBIA RIVER HWY, Saint Helens, OR 97051
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Larissa Christine Ienna Fnp 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 Reassignments

2

Medicare enrollment records show Larissa Ienna reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Legacy Emanuel Hospital & Health Center
0.7 mi
Rural Health
475 S COLUMBIA RIVER HWY STE 100
Saint Helens, OR 97051
  • Reassigned Medicare billing, Oregon enrollment
  • 719 clinicians in this Medicare group
NPI 1316129232 (503) 397-0471
Legacy Good Samaritan Hospital And Medical Center
24 mi
Clinic/Center
1200 NW 23RD AVE
Portland, OR 97210
  • Reassigned Medicare billing, Oregon enrollment
  • 387 clinicians in this Medicare group
NPI 1679597108 (503) 413-7074

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 97051 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
$84.82 typical visit price
range $54.96 – $166.64
Typical copayment $21.20 (range $13.74 – $41.66)
Most-billed visit code 99203
Established Patient
$97.16 typical visit price
range $17.68 – $136.19
Typical copayment $24.29 (range $4.42 – $34.04)
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 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANDREA STROBEL GEPNER RN, FNP
Nurse Practitioner (Family)
500 N COLUMBIA RIVER HWY, SUITE 6
SAINT HELENS, OR 97051
Columbia County (503) 366-5101
DR. MIKEANNE MINTER M.D.
Internal Medicine
500 N COLUMBIA RIVER HWY, STE 6
SAINT HELENS, OR 97051
Columbia County (503) 397-0471
PAMELA BETTY PASTORE N.P.
Nurse Practitioner (Family)
500 N COLUMBIA RIVER HWY
SAINT HELENS, OR 97051
Columbia County (503) 397-0471
DR. GREGORIO A SICARD JR. M.D.
Internal Medicine
500 N COLUMBIA RIVER HWY
SAINT HELENS, OR 97051
Columbia County (503) 397-0471
MS. LISA MARGARET JONES PA
Physician Assistant (Medical)
500 N COLUMBIA RIVER HWY, SUITE 6
SAINT HELENS, OR 97051
Columbia County (503) 397-0471
ELIZABETH PRESTON
Massage Therapist
500 N COLUMBIA RIVER HWY, STE 410
SAINT HELENS, OR 97051
Columbia County (503) 410-5623
DR. HEATHER LOUISE DRYDEN M.D.
Internal Medicine
500 N COLUMBIA RIVER HWY
SAINT HELENS, OR 97051
Columbia County (503) 397-0471
WILLIAM P.E. MOORE, DMD, LLC
Clinic/Center (Dental)
500 N COLUMBIA RIVER HWY, SUITE 505
SAINT HELENS, OR 97051
Columbia County (503) 396-4750

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 Larissa Ienna's NPI number?

The NPI number for Larissa Ienna is 1679766224. It was assigned to this individual provider in the NPPES registry on August 27, 2007.

Where is Larissa Ienna located?

Larissa Ienna practices at 500 N Columbia River Hwy, Saint Helens, OR 97051. The listed phone number is (503) 397-0471.

What is Larissa Ienna's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Larissa Ienna enrolled in Medicare?

Yes. Larissa Ienna is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Larissa Ienna's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Larissa Ienna reassigns Medicare benefits to 2 organizations: Legacy Emanuel Hospital & Health Center (Saint Helens, OR) and Legacy Good Samaritan Hospital And Medical Center (Portland, OR). 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 Larissa Ienna'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 Larissa Ienna was last updated on February 21, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.