KRISTEN M RIEGERT MD
NPI 1164658209
Radiology - Radiation Oncology in Walla Walla, WA

Q: What is Kristen Riegert's NPI number?

The NPI number for Kristen Riegert is 1164658209. It was assigned to this individual provider in the NPPES registry on June 3, 2009. The provider is also known as Kristen M O'donnell MD.

Q: What is Kristen Riegert's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for Kristen Riegert was last updated on July 30, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 June 03, 2009PECOS EnrolledAccepts Medicare Assignment

401 W POPLAR ST, WALLA WALLA, WA 99362(509) 897-5700(509) 897-5705 Get Directions Write a Review

NPPES record last updated: July 30, 2018. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Kristen M Riegert Md NPPES

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

KRISTEN M RIEGERT MD (NPI 1164658209) is an individual radiation oncology provider in Walla Walla, Washington, licensed in Washington (MD60444423) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in Portland, and is a graduate of Oregon Health Sciences University School Of Medicine (2009).

NPPES Registry Identity

NPI1164658209

Entity TypeIndividualFemale

Primary Taxonomy2085R0001X

Provider Legal NameKRISTEN M RIEGERTCredential: MD

Location Address401 W POPLAR STWalla Walla, WA 99362

Mailing AddressPo Box 3158Portland, OR 97208-3158

Phone(509) 897-5700

Fax(509) 897-5705

Sole ProprietorNo

Medical School CMSOregon Health Sciences University School Of MedicineGraduated 2009

Enumeration DateJune 3, 2009

Last NPPES UpdateJuly 30, 2018

✔ NPI 1164658209 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in WA · MD60444423

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

Also ListedInternal MedicineTaxonomy 207R00000X · License LL18588 (OR)

401 W POPLAR ST, Walla Walla, WA 99362

Open in Google Maps ↗

Other Names 1

Former Name (1)Kristen M O'donnell Md

Secondary Practice Location 1

Location 15050 NE Hoyt St, Suite 540Portland, OR 97213-2991 · Phone (503) 215-6600

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan, Select 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

Kristen M Riegert Md 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 ID6608091707

PECOS Enrollment IDI20240801003494

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 Reassignments

Medicare enrollment records show Kristen Riegert reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Providence Health & Services - Washington

Same address

Diagnostic Radiology

401 W POPLAR STREET, PMG SE WA IMAGING
Walla Walla, WA 99362

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

NPI 1306097126 (509) 522-5850

Intermountain Medical Group Grand Junction, LLC

665 mi

Medical Specialty

785 RUSSELL ST
Craig, CO 81625

Reassigned Medicare billing, Colorado enrollment
438 clinicians in this Medicare group

NPI 1245843481 (970) 298-3188

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 15

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.

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

272 services31 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

134 services37 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

88 services73 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

87 services39 patients

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

83 services31 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

56 services53 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

36 services34 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

30 services30 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

25 services24 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

25 services24 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

25 services21 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

22 services20 patients

Special radiation treatment 77470

Special radiation treatment is a medical procedure that uses high-energy rays to destroy or damage cancer cells. It's a targeted approach that aims to minimize harm to healthy tissues. The treatment duration varies based on individual health conditions.

17 services16 patients

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

15 services15 patients

3d radiation therapy planning 77295

3D radiation therapy planning is a procedure that uses computer imaging to map out the area needing treatment. This ensures the radiation targets the disease precisely, while minimizing exposure to surrounding healthy tissues. It's a key step in preparing for effective radiation therapy.

14 services13 patients

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

$172.80 typical visit price

range $57.27 – $172.80

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

Most-billed visit code 99205

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 20

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

PATRICK R SMART ARNP

Nurse Practitioner

401 W POPLAR ST, SLEEP MEDICINE CENTER
WALLA WALLA, WA 99362

Walla Walla County (509) 522-5946

JENNIFER SIMPSON

Registered Nurse

401 W POPLAR ST
WALLA WALLA, WA 99362

Walla Walla County (817) 933-1868

JAMES WILLIAM ROSSMAN MD

Anesthesiology

401 W POPLAR ST
WALLA WALLA, WA 99362

Walla Walla County (509) 897-2002

DR. ROBERT JOHN BRAWDERS PHARMD

Pharmacist

401 W POPLAR ST
WALLA WALLA, WA 99362

Walla Walla County (509) 897-2055

KRISTA NEUENDORFF OTR/L

Occupational Therapist

401 W POPLAR ST
WALLA WALLA, WA 99362

Walla Walla County (509) 897-5022

NORA KEOUGH COTA/L

Occupational Therapy Assistant

401 W POPLAR ST, REBAB SERVICE
WALLA WALLA, WA 99362

Walla Walla County (509) 897-2100

JULIA THERESE CARTER MD

Physical Medicine & Rehabilitation

401 W POPLAR ST
WALLA WALLA, WA 99362

Walla Walla County (509) 897-2390

DR. PHILIP A GREEN MD

Emergency Medicine

401 W POPLAR ST, PSMMC ER
WALLA WALLA, WA 99362

Walla Walla County (509) 522-5802

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 Kristen Riegert's NPI number?

The NPI number for Kristen Riegert is 1164658209. It was assigned to this individual provider in the NPPES registry on June 3, 2009. The provider is also known as Kristen M O'donnell MD.

Where is Kristen Riegert located?

Kristen Riegert practices at 401 W Poplar St, Walla Walla, WA 99362. The listed phone number is (509) 897-5700.

What is Kristen Riegert's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Kristen Riegert enrolled in Medicare?

Yes. Kristen Riegert 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.

Which organizations bill Medicare for Kristen Riegert's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kristen Riegert reassigns Medicare benefits to 2 organizations: Providence Health & Services - Washington (Walla Walla, WA) and Intermountain Medical Group Grand Junction, LLC (Craig, CO). Each 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 Kristen Riegert's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kristen Riegert accept?

Health plans from Providence Health Plan and Select Health list Kristen Riegert 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 Kristen Riegert was last updated on July 30, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.