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MISS SONJA HALVORSON PA-C
NPI 1154879351
Physician Assistant in Eugene, OR

Active since September 15, 2016PECOS Enrolled
1255 HILYARD ST, EUGENE, OR 97401(541) 344-8757 Get Directions Write a Review

NPPES record last updated: September 10, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 10, 2025, Oct 17, 2018, Sep 15, 2016 (3 updates tracked since 2016).

About Miss Sonja Halvorson Pa-c NPPES

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

MISS SONJA HALVORSON PA-C (NPI 1154879351) is an individual physician assistant in Eugene, Oregon, licensed in Oregon (189587) and active in the NPI registry since September 2016. She is enrolled in Medicare PECOS and maintains a secondary practice location in Cottage Grove.

NPPES Registry Identity

NPI1154879351
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameMISS SONJA HALVORSONCredential: PA-C
Location Address1255 HILYARD STEugene, OR 97401-3718
Mailing Address1515 Village DrCottage Grove, OR 97424-9700 · (541) 767-5222
Phone(541) 344-8757
Sole ProprietorYes
Enumeration DateSeptember 15, 2016
Last NPPES UpdateSeptember 10, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 10, 2025
✔ NPI 1154879351 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Licenses✔ Licensed in OR · 189587✔ Licensed in OR · PA189587
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
1255 HILYARD ST, Eugene, OR 97401
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Secondary Practice Location 1

Location 11515 Village DrCottage Grove, OR 97424-9700 · Phone (417) 675-5222

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Miss Sonja Halvorson Pa-c 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.

Areas of Expertise CMS Part B claims 3

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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
79 services76 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
39 services38 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97401 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
$68.64 typical visit price
range $17.68 – $136.19
Typical copayment $17.16 (range $4.42 – $34.04)
Most-billed visit code 99213
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.

LINDSEY NICOLE BANGERT DPT, PT
Physical Therapist
1255 HILYARD ST
EUGENE, OR 97401
Lane County (541) 222-6060
DR. WILLIAM MILLER M.D.
Emergency Medicine
1255 HILYARD ST
EUGENE, OR 97401
Lane County (503) 686-7300
THOMAS SEDDON M.D.
Emergency Medicine
1255 HILYARD ST
EUGENE, OR 97401
Lane County (503) 686-7300
DR. ERNEST FUNG PSY.D.
Clinical Neuropsychologist
1255 HILYARD ST, SACRED HEART MEDICAL CENTER
EUGENE, OR 97401
Lane County (541) 686-7085
CATHRYN CHICOLA MD
Radiology (Diagnostic Radiology)
1255 HILYARD ST
EUGENE, OR 97401
Lane County (541) 687-7134
MICHAEL KING P.T.
Physical Therapist
1255 HILYARD ST, SACRED HEART MEDICAL CENTER
EUGENE, OR 97401
Lane County (541) 686-3640
MS. MOIRA COLLEEN MACNAIR RN
Registered Nurse (Medical-Surgical)
1255 HILYARD ST
EUGENE, OR 97401
Lane County (541) 686-7087
DR. JENNIFER SUZANNE INGLE PHARM D
Pharmacist
1255 HILYARD ST
EUGENE, OR 97401
Lane County (541) 686-6345

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 Sonja Halvorson's NPI number?

The NPI number for Sonja Halvorson is 1154879351. It was assigned to this individual provider in the NPPES registry on September 15, 2016.

Where is Sonja Halvorson located?

Sonja Halvorson practices at 1255 Hilyard St, Eugene, OR 97401. The listed phone number is (541) 344-8757.

What is Sonja Halvorson's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Sonja Halvorson enrolled in Medicare?

Yes. Sonja Halvorson is registered in the Medicare PECOS enrollment system.

What insurance does Sonja Halvorson accept?

Health plans from Providence Health Plan list Sonja Halvorson 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 Sonja Halvorson was last updated on September 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.