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SPENCER JOSEPH MARSDEN PA-C
NPI 1881165470
Physician Assistant in Nyssa, OR

Active since December 08, 2018PECOS EnrolledAccepts Medicare Assignment

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 14, 2026, Jan 5, 2019, Dec 8, 2018 (3 updates tracked since 2018).

About Spencer Joseph Marsden Pa-c NPPES

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

SPENCER JOSEPH MARSDEN PA-C (NPI 1881165470) is an individual physician assistant in Nyssa, Oregon, licensed in Oregon (PA191063) and active in the NPI registry since December 2018. He is enrolled in Medicare PECOS, is affiliated with St Luke's Regional Medical Center, and is a graduate of Des Moines University Of Osteopathic Medicine And Health Sciences (2018).

NPPES Registry Identity

NPI1881165470
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameSPENCER JOSEPH MARSDENCredential: PA-C
Location Address17 N 6TH STNyssa, OR 97913-3477
Mailing Address1441 Ne 10th AvePayette, ID 83661-5420 · (208) 642-9376 · Fax (208) 642-9279
Phone(541) 372-2606
Sole ProprietorNo
Medical School CMSDes Moines University Of Osteopathic Medicine And Health SciencesGraduated 2018
Enumeration DateDecember 8, 2018
Last NPPES UpdateJanuary 14, 20263 updates tracked since enumeration
NPPES CertifiedJanuary 14, 2026
✔ NPI 1881165470 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 · PA191063✔ Licensed in ID · PA1692
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.
17 N 6TH ST, Nyssa, OR 97913
Open in Google Maps ↗

Other Identifiers 1

Medicaid500756900OR

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Spencer Joseph Marsden Pa-c 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 ID9436499704
PECOS Enrollment IDI20250728001944
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.

Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
65 services35 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
48 services42 patients
Blood glucose (sugar) level 82947
A blood glucose level test measures the amount of sugar in your blood. It's often used to monitor and manage conditions like diabetes. High or low levels can indicate a health issue. The test is usually done by pricking your finger for a small blood sample.
32 services22 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St Luke's Regional Medical Center

Acute Care Hospitals · Boise, ID
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number130006
Location190 East Bannock StreetBoise, ID 83712 · Ada County
Emergency services Birthing friendly

Saint Alphonsus Regional Medical Center

Acute Care Hospitals · Boise, ID
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number130007
Location1055 North Curtis RoadBoise, ID 83706 · Ada County
Emergency services Birthing friendly

Saint Alphonsus Medical Center - Ontario

Acute Care Hospitals · Ontario, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number380052
Location351 SW 9th StreetOntario, OR 97914 · Malheur County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97913 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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
1 supplier13 claims26 services$6.57 avg. paid by Medicare
Nebulizer, with compressor E0570
DME-Other DME · category DE000N
1 supplier17 claims17 services$5.94 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

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

DR. PAUL A. CONCIDINE DDS
Dentist
17 N 6TH ST
NYSSA, OR 97913
Malheur County (541) 372-2606
VALLEY FAMILY HEALTH CARE, INC
Clinic/Center (Federally Qualified Health Center (FQHC))
17 N 6TH ST
NYSSA, OR 97913
Malheur County (541) 372-2606

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 Spencer Marsden's NPI number?

The NPI number for Spencer Marsden is 1881165470. It was assigned to this individual provider in the NPPES registry on December 8, 2018.

Where is Spencer Marsden located?

Spencer Marsden practices at 17 N 6th St, Nyssa, OR 97913. The listed phone number is (541) 372-2606.

What is Spencer Marsden's specialty?

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

Is Spencer Marsden enrolled in Medicare?

Yes. Spencer Marsden 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.

What insurance does Spencer Marsden accept?

Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans, Regence BlueCross BlueShield of Oregon and Select Health list Spencer Marsden 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 Spencer Marsden affiliated with any hospitals?

According to CMS data, Spencer Marsden is affiliated with St Luke's Regional Medical Center, Saint Alphonsus Regional Medical Center and Saint Alphonsus Medical Center - Ontario.

When was this NPI record last updated?

The NPPES record for Spencer Marsden was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.