WILLIAM ALAN MAXWELL-WALKER APRN
NPI 1215454178
Nurse Practitioner - Family in Russellville, AR

Q: What is William Maxwell-walker's NPI number?

The NPI number for William Maxwell-walker is 1215454178. It was assigned to this individual provider in the NPPES registry on August 23, 2017. The provider is also known as William Alan Walker Aprn.

Q: What is William Maxwell-walker's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Active since August 23, 2017PECOS EnrolledAccepts Medicare Assignment

511 W MAIN ST, RUSSELLVILLE, AR 72801(479) 223-5130(479) 567-5342 Get Directions Write a Review

NPPES record last updated: March 28, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 28, 2025, Aug 30, 2017, Aug 23, 2017 (3 updates tracked since 2017).

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About William Alan Maxwell-walker Aprn NPPES

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

WILLIAM ALAN MAXWELL-WALKER APRN (NPI 1215454178) is an individual family provider in Russellville, Arkansas, licensed in Arkansas (A005334) and active in the NPI registry since August 2017. He is enrolled in Medicare PECOS, maintains a secondary practice location in Russellville, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1215454178

Entity TypeIndividualMale

Primary Taxonomy363LF0000X

Provider Legal NameWILLIAM ALAN MAXWELL-WALKERCredential: APRN

Location Address511 W MAIN STRussellville, AR 72801-3601

Mailing Address1601 N. ChurchAtkins, AR 72823 · (479) 641-2255 · Fax (479) 641-1889

Phone(479) 223-5130

Fax(479) 567-5342

Sole ProprietorNo

Medical School CMSOtherGraduated 2017

Enumeration DateAugust 23, 2017

Last NPPES UpdateMarch 28, 20253 updates tracked since enumeration

NPPES CertifiedMarch 28, 2025

✔ NPI 1215454178 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

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

Taxonomy Code363LF0000X

License✔ Licensed in AR · A005334

511 W MAIN ST, Russellville, AR 72801

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Other Names 1

Former Name (1)William Alan Walker Aprn

Secondary Practice Location 1

Location 1232 Rachel CirRussellville, AR 72802-8683 · Phone (479) 970-7423 · Fax (404) 585-2688

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Arkansas Blue Cross and Blue Shield, Health Advantage, Octave.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

William Alan Maxwell-walker Aprn 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 ID9739446113

PECOS Enrollment IDI20171121001087

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 William Maxwell-walker reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Westside Family Clinic LLC

1.9 mi

Family

3812 W MAIN ST
Russellville, AR 72801

Reassigned Medicare billing, Arkansas enrollment
10 clinicians in this Medicare group

NPI 1801587779 (479) 968-1245

The Kirkland Family Medical Center, PA

3.8 mi

Preferred Provider Organization

1652 STATE HIGHWAY 22 W
Dardanelle, AR 72834

Reassigned Medicare billing, Arkansas enrollment
6 clinicians in this Medicare group

NPI 1316145022 (479) 229-8000

Urgent Team Of Arkansas Physicians, LLC

80 mi

Rural Health

610 SHEPHERD DR
Searcy, AR 72143

Reassigned Medicare billing, Arkansas enrollment
208 clinicians in this Medicare group

NPI 1992041370 (501) 268-6831

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 13

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.

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

302 services70 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

272 services68 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

156 services76 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

128 services93 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.

118 services101 patients

Injection, ceftriaxone sodium, per 250 mg J0696

Ceftriaxone sodium is an antibiotic injection used to treat a variety of bacterial infections. Each injection contains 250 mg of the medicine. It works by stopping the growth of bacteria in your body.

96 services22 patients

Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) 87811

This is a test to detect COVID-19, the virus causing severe respiratory illness. It uses a method called immunoassay, which identifies the virus by its unique proteins. The test is directly observed for accuracy. It helps determine if you're currently infected.

89 services87 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.

84 services84 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

78 services78 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.

74 services62 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

54 services51 patients

Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) 87880

A detection test by immunoassay for Group A Strep is a quick procedure to identify a bacterial infection in your throat. It involves taking a throat swab and applying it to a test strip, which changes color if Strep bacteria are present.

28 services28 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

20 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 72801 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

$79.72 typical visit price

range $51.36 – $157.74

Typical copayment $19.93 (range $12.84 – $39.43)

Most-billed visit code 99203

Established Patient

$91.63 typical visit price

range $16.16 – $128.77

Typical copayment $22.90 (range $4.04 – $32.19)

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.

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.

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

1 supplier13 claims1,560 services$0.02 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 2

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

MEDEXPRESS URGENT CARE ARKANSAS, P.A.

Clinic/Center (Urgent Care)

511 W MAIN ST
RUSSELLVILLE, AR 72801

Pope County (479) 880-1019

JENNIFER WILLIAMSON APRN

Nurse Practitioner (Family)

511 W MAIN ST
RUSSELLVILLE, AR 72801

Pope County (479) 223-5130

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 William Maxwell-walker's NPI number?

The NPI number for William Maxwell-walker is 1215454178. It was assigned to this individual provider in the NPPES registry on August 23, 2017. The provider is also known as William Alan Walker Aprn.

Where is William Maxwell-walker located?

William Maxwell-walker practices at 511 W Main St, Russellville, AR 72801. The listed phone number is (479) 223-5130.

What is William Maxwell-walker's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is William Maxwell-walker enrolled in Medicare?

Yes. William Maxwell-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 William Maxwell-walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Maxwell-walker reassigns Medicare benefits to 3 organizations: Westside Family Clinic LLC (Russellville, AR), The Kirkland Family Medical Center, PA (Dardanelle, AR) and Urgent Team Of Arkansas Physicians, LLC (Searcy, AR). 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 William Maxwell-walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Maxwell-walker accept?

Health plans from Arkansas Blue Cross and Blue Shield, Health Advantage and Octave list William Maxwell-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 William Maxwell-walker was last updated on March 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.