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

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: July 26, 2026.

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

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
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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

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.

Dentist
4244 N 19TH AVE
PHOENIX, AZ 85015
Dentist (Pediatric Dentistry)
4244 N 19TH AVE
PHOENIX, AZ 85015
Dentist (General Practice)
4244 N 19TH AVE
PHOENIX, AZ 85015
Internal Medicine (Infectious Disease)
4244 N 19TH AVE
PHOENIX, AZ 85015
Pharmacy (Community/Retail Pharmacy)
4244 N 19TH AVE
PHOENIX, AZ 85015

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 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.

Where is Maria Jefferson-walker located?

Maria Jefferson-walker practices at 4244 N 19th Ave, Phoenix, AZ 85015. The listed phone number is (602) 661-0666.

What is Maria Jefferson-walker's specialty?

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

Is Maria Jefferson-walker enrolled in Medicare?

Yes. Maria Jefferson-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.

When was this NPI record last updated?

The NPPES record for Maria Jefferson-walker was last updated on March 30, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.