DIANE DEMETER KNIGHT PHD, CPNP, APRN-RX
NPI 1851535470
Nurse Practitioner - Pediatrics in Walla Walla, WA

Q: What is Diane Knight's NPI number?

The NPI number for Diane Knight is 1851535470. It was assigned to this individual provider in the NPPES registry on April 27, 2009.

Q: What is Diane Knight's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Q: When was this NPI record last updated?

The NPPES record for Diane Knight was last updated on July 21, 2022. 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.

Active since April 27, 2009PECOS Enrolled

55 W TIETAN ST, WALLA WALLA, WA 99362(509) 525-3720(509) 522-1593 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2022, Mar 17, 2018, Aug 25, 2017 and 1 more (4 updates tracked since 2016).

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About Diane Demeter Knight Phd, Cpnp, Aprn-rx NPPES

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

DIANE DEMETER KNIGHT PHD, CPNP, APRN-RX (NPI 1851535470) is an individual pediatrics provider in Walla Walla, Washington, licensed in Washington (AP60673491) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS and maintains a secondary practice location in Walla Walla.

NPPES Registry Identity

NPI1851535470

Entity TypeIndividualFemale

Primary Taxonomy363LP0200X

Provider Legal NameDIANE DEMETER KNIGHTCredential: PHD, CPNP, APRN-RX

Location Address55 W TIETAN STWalla Walla, WA 99362-4445

Mailing Address55 W Tietan StWalla Walla, WA 99362-4445 · (509) 525-3720 · Fax (509) 522-1593

Phone(509) 525-3720

Fax(509) 522-1593

Sole ProprietorNo

Enumeration DateApril 27, 2009

Last NPPES UpdateJuly 21, 20224 updates tracked since enumeration

✔ NPI 1851535470 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0200X

Licenses✔ Licensed in WA · AP60673491✔ Licensed in HI · APRN 301 APRN RX 51

55 W TIETAN ST, Walla Walla, WA 99362

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Secondary Practice Location 1

Location 11111 S 2nd AveWalla Walla, WA 99362-4118 · Phone (509) 527-8152

Other Identifiers 1

Medicaid2067291WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diane Demeter Knight Phd, Cpnp, Aprn-rx 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 Diane Knight reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Privia Medical Group Washington, PLLC

Same address

Clinic/Center

55 W TIETAN ST
Walla Walla, WA 99362

Reassigned Medicare billing, Washington enrollment
76 clinicians in this Medicare group

NPI 1780658419 (509) 525-3720

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 99362 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

$88.29 typical visit price

range $57.27 – $172.80

Typical copayment $22.07 (range $14.31 – $43.20)

Most-billed visit code 99203

Established Patient

$100.78 typical visit price

range $18.56 – $141.11

Typical copayment $25.19 (range $4.64 – $35.27)

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 20

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

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