Mary L. Walker, FNP
Family Nurse Practitioner · Florence, AZ
Mary L. Walker, FNP is a family nurse practitioner with a practice address in Florence, Arizona, and NPI 1174288773, issued on Nov 8, 2021. Check the license (Arizona 266654, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary L. Walker
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 266654 AZ
209022899 IL
Self-reported in NPPES; status is on the state search - Practice location
- 174 W Highway 287, Florence, AZ 85132
- Phone
- (520) 868-5811
- Enumerated
- Nov 8, 2021
- Record last updated
- May 13, 2025
- Fax
- (520) 868-1223
- Medicare enrollment
- Enrolled (PECOS I20220707000439); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,933 in Arizona → Look up another NPI →
Also registered at 174 W Highway 287
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shannon Gray, FNP-BCFamily Nurse Practitioner1770186538
- Betty Hahn, FNPFamily Nurse Practitioner1740594522
- Susan Packer, FNP-CFamily Nurse Practitioner1922644533
- Amy Peacock, FNP-CFamily Nurse Practitioner1548609530
Verify Mary L. 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 266654Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.2 times the Medicare Part D claims of the average family nurse practitioner in 2024
9,344 Medicare Part D claims for 685 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 127 claims were for opioids.
Most prescribed
- Atorvastatin Calcium600 claims
- Levothyroxine Sodium461 claims
- Lisinopril449 claims
- Amlodipine Besylate330 claims
- Losartan Potassium304 claims
- Metformin Hcl220 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.
Industry payments in 2024: $20.62
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sun Life Family Health Center IncFlorence, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary L. Walker among 5,933 family nurse practitioner records in Arizona
Mary L. Walker, FNP 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 2021, is newer than 66% of them.
- NPI issued2021 · 66% of these records are older, 27% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2010 · median 2019 among the 3,510 with a school on file
- Record last updated2025 · 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).
16 family nurse practitioner records list a practice address in Florence
They are 16 of the 157 NPPES records with a practice address in Florence, and 5,933 family nurse practitioner records in Arizona.
All 5,933 in Arizona → Every provider in Florence → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Jorge Barboza, FNPFlorence, AZ 851321861122384
- Gregory Gauna, FNPFlorence, AZ 851321346752136
- Shannon Gray, FNP-BCFlorence, AZ 851321770186538
- Betty Hahn, FNPFlorence, AZ 851321740594522
- Lee Holliday, FNPFlorence, AZ 851321043275324
- Shiny Job, DNP FNPFlorence, AZ 851321831460526
- Arlene McKamey, FNP-CFlorence, AZ 851321649482225
- Monica MorrisFlorence, AZ 851321649610411
Common questions
What is Mary L. Walker, FNP's NPI number?
Mary L. Walker, FNP's National Provider Identifier (NPI) is 1174288773, issued on Nov 8, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mary L. Walker, FNP located?
The NPPES record lists a practice address at 174 W Highway 287, Florence, AZ, 85132. Phone: (520) 868-5811. Providers update this record themselves, so call before visiting.
How can I verify Mary L. Walker, FNP's license?
NPPES lists Arizona license number 266654, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Mary L. Walker, FNP prescribe under Medicare Part D?
In 2024, Mary L. Walker, FNP had 9,344 Medicare Part D claims for 685 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.