DR. JOHN ALLAN ERNST PHD
NPI 1063624104
Clinical Neuropsychologist in Tacoma, WA
About Dr. John Allan Ernst Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN ALLAN ERNST PHD (NPI 1063624104) is an individual clinical neuropsychologist in Tacoma, Washington, licensed in Washington (953) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John Allan Ernst Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Ernst reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tacoma, WA 98406
- Reassigned Medicare billing, Washington enrollment
- 2 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
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.
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 John Ernst's NPI number?
The NPI number for John Ernst is 1063624104. It was assigned to this individual provider in the NPPES registry on May 3, 2007.
Where is John Ernst located?
John Ernst practices at 1717 S J St # Ms 02-12 St Joseph Medical Center, Tacoma, WA 98405. The listed phone number is (253) 426-6762.
What is John Ernst's specialty?
The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.
Is John Ernst enrolled in Medicare?
Yes. John Ernst is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Ernst's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Ernst reassigns Medicare benefits to Tacoma Psychology, PLLC (Tacoma, WA). 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 John Ernst'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 John Ernst was last updated on March 1, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. John Allan Ernst, PHD · NPI 1063624104
Clinical Neuropsychologist provider in Tacoma, Washington. Individual provider, active in the CMS NPPES registry since May 3, 2007.
## Identity
- **NPI:** 1063624104 (Entity type: Individual)
- **Enumerated:** May 3, 2007
- **Primary specialty:** Clinical Neuropsychologist · taxonomy 103G00000X
- **State license:** 953 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1717 S J ST # MS 02-12, ST JOSEPH MEDICAL CENTER, Tacoma, WA 98405-4933
- **Phone:** (253) 426-6762 · **Fax:** (253) 426-6224
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for durable medical equipment
- **Bills Medicare through:** Tacoma Psychology, PLLC (NPI 1568422277, Tacoma, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 1, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1063624104) · Data from the CMS NPPES public registry.