MARIA JEFFERSON-WALKER APRN
NPI 1831522630
Nurse Practitioner - Family in Phoenix, AZ

Q: What is Maria Jefferson-walker's NPI number?

The NPI number for Maria Jefferson-walker is 1831522630. It was assigned to this individual provider in the NPPES registry on August 15, 2013.

Q: What is Maria Jefferson-walker's specialty?

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

Active since August 15, 2013PECOS EnrolledAccepts Medicare Assignment

4244 N 19TH AVE, PHOENIX, AZ 85015(602) 661-0666(877) 869-9199 Get Directions Write a Review

NPPES record last updated: March 30, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 30, 2026, Mar 17, 2018, Oct 19, 2017 (3 updates tracked since 2017).

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About Maria Jefferson-walker Aprn NPPES

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

MARIA JEFFERSON-WALKER APRN (NPI 1831522630) is an individual family provider in Phoenix, Arizona, licensed in Arizona (272166) and active in the NPI registry since August 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1831522630

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameMARIA JEFFERSON-WALKERCredential: APRN

Location Address4244 N 19TH AVEPhoenix, AZ 85015-5108

Mailing AddressDept 394 Po Box 1000Memphis, TN 38148 · (941) 300-4440 · Fax (941) 404-1760

Phone(602) 661-0666

Fax(877) 869-9199

Sole ProprietorNo

Medical School CMSOtherGraduated 2013

Enumeration DateAugust 15, 2013

Last NPPES UpdateMarch 30, 20263 updates tracked since enumeration

NPPES CertifiedMarch 30, 2026

✔ NPI 1831522630 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 AZ · 272166

4244 N 19TH AVE, Phoenix, AZ 85015

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona, Oscar Health Maintenance Organization of Florida, Oscar Health Plan, Inc. 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

Maria Jefferson-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 ID648576082

PECOS Enrollment IDI20240918003840

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 Maria Jefferson-walker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Carelon Medical Partners Of Arizona, P.C.

114 mi

Family Medicine

7091 E SPEEDWAY BLVD
Tucson, AZ 85710

Reassigned Medicare billing, Arizona enrollment
Medicare enrollment name: Carelon Medical Partners Of Arizona PC
39 clinicians in this Medicare group

NPI 1972879773 (520) 721-5777

Can Community Health, Inc.

1,810 mi

Infectious Disease

1231 N TUTTLE AVE
Sarasota, FL 34237

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

NPI 1104829274 (941) 366-0134

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 85015 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

$85.89 typical visit price

range $55.44 – $168.60

Typical copayment $21.47 (range $13.86 – $42.15)

Most-billed visit code 99203

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

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 5

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

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