LANDON JAMES WILLIAMSON DNAP
NPI 1326830043
Nurse Anesthetist, Certified Registered in Prosser, WA

Q: What is Landon Williamson's NPI number?

The NPI number for Landon Williamson is 1326830043. It was assigned to this individual provider in the NPPES registry on May 19, 2025.

Q: What is Landon Williamson's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Q: When was this NPI record last updated?

The NPPES record for Landon Williamson was last updated on May 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.

Active since May 19, 2025Accepts Medicare Assignment

200 PROSSER HEALTH DR, PROSSER, WA 99350(509) 786-2222 Get Directions Write a Review

NPPES record last updated: May 26, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 26, 2025, May 19, 2025 (2 updates tracked since 2025).

On this page

About Landon James Williamson Dnap NPPES

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

LANDON JAMES WILLIAMSON DNAP (NPI 1326830043) is an individual nurse anesthetist, certified registered in Prosser, Washington, licensed in Washington (AP61682957) and active in the NPI registry since May 2025. He is affiliated with Prosser Memorial Hospital and is a graduate of Other (2025).

NPPES Registry Identity

NPI1326830043

Entity TypeIndividualMale

Primary Taxonomy367500000X

Provider Legal NameLANDON JAMES WILLIAMSONCredential: DNAP

Location Address200 PROSSER HEALTH DRProsser, WA 99350-7832

Mailing Address2812 Sunshine Ridge RdRichland, WA 99352-9301 · (360) 852-6640

Phone(509) 786-2222

Sole ProprietorYes

Medical School CMSOtherGraduated 2025

Enumeration DateMay 19, 2025

Last NPPES UpdateMay 26, 20252 updates tracked since enumeration

NPPES CertifiedMay 26, 2025

✔ NPI 1326830043 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367500000X

License✔ Licensed in WA · AP61682957

Definition

(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.

Also ListedClinical Nurse SpecialistTaxonomy 364S00000X · License AP61682957 (WA)

200 PROSSER HEALTH DR, Prosser, WA 99350

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Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Landon James Williamson Dnap 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 ID7315458015

PECOS Enrollment IDI20250618004076

Medicare Billing Reassignment

Medicare enrollment records show Landon Williamson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Prosser Public Hospital District Of Benton County

Same address

Critical Access

200 PROSSER HEALTH DR
Prosser, WA 99350

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

NPI 1013956259 (509) 786-2222

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

Prosser Memorial Hospital

Critical Access Hospitals · Prosser, WA

OwnershipGovernment - Hospital District or Authority

CMS Certification Number501312

Location723 Memorial StreetProsser, WA 99350 · Benton County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 99350 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

$130.99 typical visit price

range $57.27 – $172.80

Typical copayment $32.74 (range $14.31 – $43.20)

Most-billed visit code 99204

Established Patient

$71.29 typical visit price

range $18.56 – $141.11

Typical copayment $17.82 (range $4.64 – $35.27)

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 11

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

PROSSER PUBLIC HOSPITAL DISTRICT OF BENTON COUNTY

General Acute Care Hospital (Critical Access)