GARY WALKER M.D., M.P.H., M.S.
NPI 1154667467
Radiology - Radiation Oncology in Gilbert, AZ

Q: What is Gary Walker's NPI number?

The NPI number for Gary Walker is 1154667467. It was assigned to this individual provider in the NPPES registry on December 14, 2012.

Q: What is Gary Walker'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 Gary Walker was last updated on January 28, 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 December 14, 2012PECOS EnrolledAccepts Medicare Assignment

89.33/100

CMS Quality Rating

2946 E BANNER GATEWAY DR, GILBERT, AZ 85234(480) 256-4500 Get Directions Write a Review

NPPES record last updated: January 28, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 28, 2022, Nov 24, 2021, Nov 18, 2021 (3 updates tracked since 2021).

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About Gary Walker M.d., M.p.h., M.s. NPPES

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

GARY WALKER M.D., M.P.H., M.S. (NPI 1154667467) is an individual radiation oncology provider in Gilbert, Arizona, licensed in Texas (P3482) and active in the NPI registry since December 2012. He is enrolled in Medicare PECOS and is a graduate of Baylor College Of Medicine (2010).

NPPES Registry Identity

NPI1154667467

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameGARY WALKERCredential: M.D., M.P.H., M.S.

Location Address2946 E BANNER GATEWAY DRGilbert, AZ 85234-2165

Mailing Address2946 E Banner Gateway DrGilbert, AZ 85234-2165 · (480) 256-4500

Phone(480) 256-4500

Sole ProprietorNo

Medical School CMSBaylor College Of MedicineGraduated 2010

Enumeration DateDecember 14, 2012

Last NPPES UpdateJanuary 28, 20223 updates tracked since enumeration

NPPES CertifiedJanuary 28, 2022

✔ NPI 1154667467 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in TX · P3482

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.

2946 E BANNER GATEWAY DR, Gilbert, AZ 85234

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Blue Cross Blue Shield of Arizona 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 and accepts Medicare assignment

Gary Walker M.d., M.p.h., M.s. 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 ID5294040713

PECOS Enrollment IDI20150812009105

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 Gary Walker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Banner Cancer Center Specialists LLC

21 mi

Oncology

2901 N CENTRAL AVE STE 160
Phoenix, AZ 85012

Reassigned Medicare billing, Arizona enrollment
470 clinicians in this Medicare group

NPI 1518253152 (602) 747-4000

Banner Hospital Based Physicians Colorado LLC

609 mi

Multi-Specialty

2000 BOISE AVE
Loveland, CO 80538

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

NPI 1093127276 (970) 669-4640

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.

467 services68 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.

151 services55 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.

111 services51 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.

84 services31 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.

49 services46 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

46 services35 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.

42 services37 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.

28 services25 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.

26 services21 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.

24 services23 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.

24 services23 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.

21 services21 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.

20 services17 patients

Diagnostic exam of voice box using a flexible endoscope 31575

This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.

15 services11 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85234 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

$168.60 typical visit price

range $55.44 – $168.60

Typical copayment $42.15 (range $13.86 – $42.15)

Most-billed visit code 99205

Established Patient

$69.24 typical visit price

range $17.72 – $137.41

Typical copayment $17.31 (range $4.43 – $34.35)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

89.33/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Promoting Interoperability

Improvement Activities

Cost

61.89

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Respiratory suction pump, home model, portable or stationary, electric E0600

DME-Other DME · category DE000N

2 suppliers14 claims14 services$34.94 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

SOYOUNG PARK MD

Internal Medicine (Hematology & Oncology)

2946 E BANNER GATEWAY DR
GILBERT, AZ 85234

Maricopa County (480) 256-6444

MY HUONG THI LE

Physician Assistant

2946 E BANNER GATEWAY DR
GILBERT, AZ 85234

Maricopa County (480) 256-6444

DR. AKSHAAR BRAHMBHATT MD

Radiology (Vascular & Interventional Radiology)

2946 E BANNER GATEWAY DR
GILBERT, AZ 85234

Maricopa County (480) 256-6444

THERESA ONG LIU DUMLAO MD

Internal Medicine (Hematology & Oncology)

2946 E BANNER GATEWAY DR, SUITE 450
GILBERT, AZ 85234

Maricopa County (480) 256-6444

DR. ZACHARY PHILLIP YEUNG MD

Internal Medicine (Medical Oncology)

2946 E BANNER GATEWAY DR
GILBERT, AZ 85234

Maricopa County (480) 245-6444

MICHAEL J POGGE AGACNP-BC

Nurse Practitioner (Acute Care)

2946 E BANNER GATEWAY DR
GILBERT, AZ 85234

Maricopa County (480) 256-6444

RICHARD D SUE MD

Internal Medicine (Pulmonary Disease)

2946 E BANNER GATEWAY DR
GILBERT, AZ 85234

Maricopa County (480) 256-6444

MRS. ALEXANDRIA NICOLE BARNES PA-C

Physician Assistant (Medical)

2946 E BANNER GATEWAY DR
GILBERT, AZ 85234

Maricopa County (480) 256-6444

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 Gary Walker's NPI number?

The NPI number for Gary Walker is 1154667467. It was assigned to this individual provider in the NPPES registry on December 14, 2012.

Where is Gary Walker located?

Gary Walker practices at 2946 E Banner Gateway Dr, Gilbert, AZ 85234. The listed phone number is (480) 256-4500.

What is Gary Walker's specialty?

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

Is Gary Walker enrolled in Medicare?

Yes. Gary Walker 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 Gary Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Walker reassigns Medicare benefits to 2 organizations: Banner Cancer Center Specialists LLC (Phoenix, AZ) and Banner Hospital Based Physicians Colorado LLC (Loveland, 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 Gary Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gary Walker accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, Oscar Health Plan, Inc. and UnitedHealthcare list Gary Walker 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 Gary Walker was last updated on January 28, 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.