NPPES file of Aug 9, 2026

Kay Lynn Southwell, PMHNP-BC,NPC

Psychiatric/Mental Health Nurse Practitioner · Mesa, AZ

Kay Lynn Southwell, PMHNP-BC,NPC is a psychiatric/mental health nurse practitioner with a practice address in Mesa, Arizona, and NPI 1730320623, issued on Mar 23, 2009. Check the license (Arizona AP8742, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1730320623
Name
Kay Lynn Southwell
Credential
PMHNP-BC,NPC
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License numbers
AP8742 AZ
4704216251 MI
Self-reported in NPPES; status is on the state search
Practice location
1910 S Stapley Dr Ste 217, Mesa, AZ 85204
Phone
(602) 888-0370
Enumerated
Mar 23, 2009
Record last updated
Sep 30, 2024
Medicare enrollment
Enrolled (PECOS I20160914002452); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Kay Lynn Southwell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license AP8742
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Arizona license search

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3.2 times the Medicare Part D claims of the average psychiatric/mental health nurse practitioner in 2024

2,883 Medicare Part D claims for 315 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. 27 claims were for opioids.

  1. Kay Southwell2,883
  2. Specialty average906

Most prescribed

  1. Levothyroxine Sodium290 claims
  2. Rosuvastatin Calcium152 claims
  3. Pravastatin Sodium147 claims
  4. Atorvastatin Calcium132 claims
  5. Losartan Potassium110 claims
  6. Amlodipine Besylate109 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: $974.35

62 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kay Southwell$974.35
  2. Specialty average$1,027.77

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

  1. Bhsm Rehabilitation LLCMesa, AZ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kay Lynn Southwell among 1,887 psychiatric/mental health nurse practitioner records in Arizona

Kay Lynn Southwell, PMHNP-BC,NPC is one of 1,887 psychiatric/mental health nurse practitioner records with a practice address in Arizona. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 12% of them.

  • NPI issued2009 · 12% of these records are older, 86% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2008 · median 2020 among the 1,079 with a school on file
  • Record last updated2024 · 23% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

154 psychiatric/mental health nurse practitioner records list a practice address in Mesa

They are 154 of the 9,151 NPPES records with a practice address in Mesa, and 1,887 psychiatric/mental health nurse practitioner records in Arizona.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Margarita Arvizu, PMHNPMesa, AZ 852041558058636
  2. Humberto Beltran, DNP, PMHNP-BC, RNMesa, AZ 852041821513565
  3. Kelly Black, PMHNP-BCMesa, AZ 852041912653536
  4. Nikkita Dinnella, PMHNPMesa, AZ 852041306618590
  5. Lia Doh, NPMesa, AZ 852041962034215
  6. Alisha Holben, PMHNP-BCMesa, AZ 852041003516006
  7. Dorothy IgweMesa, AZ 852041073038824
  8. Nirva Jean-Baptiste, A.M.H.N.PMesa, AZ 852041407279771

Common questions

What is Kay Lynn Southwell, PMHNP-BC,NPC's NPI number?

Kay Lynn Southwell, PMHNP-BC,NPC's National Provider Identifier (NPI) is 1730320623, issued on Mar 23, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Kay Lynn Southwell, PMHNP-BC,NPC located?

The NPPES record lists a practice address at 1910 S Stapley Dr Ste 217, Mesa, AZ, 85204. Phone: (602) 888-0370. Providers update this record themselves, so call before visiting.

How can I verify Kay Lynn Southwell, PMHNP-BC,NPC's license?

NPPES lists Arizona license number AP8742, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Kay Lynn Southwell, PMHNP-BC,NPC prescribe under Medicare Part D?

In 2024, Kay Lynn Southwell, PMHNP-BC,NPC had 2,883 Medicare Part D claims for 315 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.