Maria Jefferson-Walker, APRN
Family Nurse Practitioner · Phoenix, AZ
Maria Jefferson-Walker, APRN is a family nurse practitioner with a practice address in Phoenix, Arizona, and NPI 1831522630, issued on Aug 15, 2013. Check the license (Arizona 272166, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maria Jefferson-Walker
- Credential
- APRN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 272166 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 4244 N 19TH Ave, Phoenix, AZ 85015
- Phone
- (602) 661-0666
- Enumerated
- Aug 15, 2013
- Record last updated
- Mar 30, 2026
- Fax
- (877) 869-9199
- Medicare enrollment
- Enrolled (PECOS I20240918003840); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,933 in Arizona → Look up another NPI →
Verify Maria Jefferson-Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 272166Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average family nurse practitioner in 2024
255 Medicare Part D claims for 28 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Citalopram Hbr29 claims
- Amlodipine Besylate17 claims
- Quetiapine Fumarate17 claims
- Losartan Potassium13 claims
- Simvastatin11 claims
- Zenpep11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Can Community Health IncPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria Jefferson-Walker among 5,933 family nurse practitioner records in Arizona
Maria Jefferson-Walker, APRN is one of 5,933 family nurse practitioner records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 23% of them.
- NPI issued2013 · 23% of these records are older, 73% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2013 · median 2019 among the 3,510 with a school on file
- Record last updated2026 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,242 family nurse practitioner records list a practice address in Phoenix
They are 1,242 of the 31,399 NPPES records with a practice address in Phoenix, and 5,933 family nurse practitioner records in Arizona.
All 5,933 in Arizona → Every provider in Phoenix → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Nancy AlvaradoPhoenix, AZ 850151295131514
- Judith Bergman, MSN, FNPPhoenix, AZ 850151184617128
- Amy Boatright, FNPPhoenix, AZ 850151205146537
- Karen Hannah, FNPPhoenix, AZ 850151043465206
- Susan Hesketh, FNPPhoenix, AZ 850151679993794
- Kathleen Ivers, FNP-CPhoenix, AZ 850151891178513
- Kevin Kerchansky, DC, FNP-C, DACRBPhoenix, AZ 850151407988785
- Hong Li, NPPhoenix, AZ 850151548537608
Common questions
What is Maria Jefferson-Walker, APRN's NPI number?
Maria Jefferson-Walker, APRN's National Provider Identifier (NPI) is 1831522630, issued on Aug 15, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Maria Jefferson-Walker, APRN located?
The NPPES record lists a practice address at 4244 N 19TH Ave, Phoenix, AZ, 85015. Phone: (602) 661-0666. Providers update this record themselves, so call before visiting.
How can I verify Maria Jefferson-Walker, APRN's license?
NPPES lists Arizona license number 272166, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Maria Jefferson-Walker, APRN prescribe under Medicare Part D?
In 2024, Maria Jefferson-Walker, APRN had 255 Medicare Part D claims for 28 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.