NPPES file of Aug 9, 2026

Alwin A. Diaz, N.P.

Nurse Practitioner · Kenosha, WI

Alwin A. Diaz, N.P. is a nurse practitioner with a practice address in Kenosha, Wisconsin, and NPI 1245610658, issued on Jun 2, 2015. Check the license (Wisconsin 6367-33, as entered in NPPES) with the Wisconsin 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
1245610658
Name
Alwin A. Diaz
Credential
N.P.
Primary taxonomy
Nurse Practitioner 363L00000X
License number
6367-33 WI
Self-reported in NPPES; status is on the state search
Practice location
7201 Green Bay RD, Kenosha, WI 53142
Phone
(262) 432-2352
Enumerated
Jun 2, 2015
Record last updated
Jan 7, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(262) 697-5616
Medicare enrollment
Enrolled (PECOS I20150617000572); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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Also registered at 7201 Green Bay RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Pamela Hileman, PTAPhysical Therapy Assistant1295984151
  2. William Letsom, PTPhysical Therapist1356330609
  3. Giuseppe Miceli, DPMFoot Surgery Podiatrist1619943354
  4. Kim Parrett, PTAPhysical Therapy Assistant1679585145
  5. Shelley Rogers, P.T.A.Physical Therapy Assistant1548369283
  6. Karen Tenuta, BS,PTPhysical Therapist1407959711

Verify Alwin A. Diaz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 6367-33
    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 Wisconsin license search

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3.4 times the Medicare Part D claims of the average nurse practitioner in 2024

3,754 Medicare Part D claims for 141 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 13 claims were for opioids.

  1. Alwin Diaz3,754
  2. Specialty average1,109

Most prescribed

  1. Quetiapine Fumarate312 claims
  2. Alprazolam252 claims
  3. Clonazepam171 claims
  4. Dextroamphetamine-Amphetamine171 claims
  5. Trazodone Hcl156 claims
  6. Vraylar143 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: $14.34

1 payment: food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alwin Diaz$14.34
  2. Specialty average$791.64

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. Horizon Healthcare, IncMilwaukee, WI

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

76 nurse practitioner records list a practice address in Kenosha

They are 76 of the 1,852 NPPES records with a practice address in Kenosha, and 3,995 nurse practitioner records in Wisconsin.

Other nurse practitioner records in Wisconsin

  1. Caroline Aaberg, APNPMadison, WI1881384394
  2. Joyce Abbott, APNPOshkosh, WI1003824665
  3. Mohamed Abdelazim, APNPAppleton, WI1760266696
  4. Jacklyn Abel, AGACNP-BCMauston, WI1104631506
  5. Henrietta Abili, APNPGermantown, WI1174859524
  6. Jade Abts, NPGreen Bay, WI1992293708
  7. Karalyn Adam, DNP, RNMarshfield, WI1780933051
  8. Carol Adamczyk, MSNWauwatosa, WI1457502395
  9. Amanda Adams, NPMadison, WI1023366598
  10. Bernadette Adams, FNPWestby, WI1427047620

Common questions

What is Alwin A. Diaz, N.P.'s NPI number?

Alwin A. Diaz, N.P.'s National Provider Identifier (NPI) is 1245610658, issued on Jun 2, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Alwin A. Diaz, N.P. located?

The NPPES record lists a practice address at 7201 Green Bay RD, Kenosha, WI, 53142. Phone: (262) 432-2352. Providers update this record themselves, so call before visiting.

How can I verify Alwin A. Diaz, N.P.'s license?

NPPES lists Wisconsin license number 6367-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Alwin A. Diaz, N.P. prescribe under Medicare Part D?

In 2024, Alwin A. Diaz, N.P. had 3,754 Medicare Part D claims for 141 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.