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DR. ADAM A NELSON PHD
NPI 1295933968
Clinical Neuropsychologist in Clackamas, OR

Active since July 04, 2007PECOS Enrolled
9800 SE SUNNYSIDE RD, CLACKAMAS, OR 97015(503) 813-2000 Get Directions Write a Review

NPPES record last updated: December 28, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Adam A Nelson Phd NPPES

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

DR. ADAM A NELSON PHD (NPI 1295933968) is an individual clinical neuropsychologist in Clackamas, Oregon, licensed in Washington (60081984) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295933968
Entity TypeIndividualMale
Primary Taxonomy103G00000X
Provider Legal NameDR. ADAM A NELSONCredential: PHD
Location Address9800 SE SUNNYSIDE RDClackamas, OR 97015-9750
Mailing Address9800 Se Sunnyside RdClackamas, OR 97015-9750 · (503) 813-2000
Phone(503) 813-2000
Sole ProprietorYes
Enumeration DateJuly 4, 2007
Last NPPES UpdateDecember 28, 2021
NPPES CertifiedDecember 28, 2021
✔ NPI 1295933968 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers
Taxonomy Code103G00000X
Licenses✔ Licensed in WA · 60081984✔ Licensed in CA · 21569
Definition
A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.
9800 SE SUNNYSIDE RD, Clackamas, OR 97015
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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 (PECOS)

Dr. Adam A Nelson Phd 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 Adam Nelson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kaiser Foundation Health Plan Of The Northwest
0.2 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.

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 Adam Nelson's NPI number?

The NPI number for Adam Nelson is 1295933968. It was assigned to this individual provider in the NPPES registry on July 4, 2007.

Where is Adam Nelson located?

Adam Nelson practices at 9800 SE Sunnyside Rd, Clackamas, OR 97015. The listed phone number is (503) 813-2000.

What is Adam Nelson's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

Is Adam Nelson enrolled in Medicare?

Yes. Adam Nelson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Adam Nelson's services?

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

What insurance does Adam Nelson accept?

Health plans from Kaiser Permanente list Adam Nelson 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 Adam Nelson was last updated on December 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.