NPPES file of Aug 9, 2026

Ruth A. Diaz De Leon, NP

Nurse Practitioner · Madison, WI

Ruth A. Diaz De Leon, NP is a nurse practitioner with a practice address in Madison, Wisconsin, and NPI 1730157116, issued on Mar 10, 2006. Check the license (Wisconsin 876, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1730157116
Name
Ruth A. Diaz De Leon
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
876 WI
Self-reported in NPPES; status is on the state search
Practice location
25 Jaarsma CT, Madison, WI 53716
Phone
(608) 263-5010
Enumerated
Mar 10, 2006
Record last updated
Aug 22, 2024
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Ruth A. Diaz De Leon 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 876
    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
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90% fewer Medicare Part D claims than the average nurse practitioner in 2024

106 Medicare Part D claims for 36 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 63% of claims.

  1. Ruth Diaz De Leon106
  2. Specialty average1,109

Most prescribed

  1. Lantus Solostar17 claims
  2. Nano 2nd Gen Pen Needle14 claims
  3. Insulin Degludec Pen (U-100)11 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 77.4 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score81.8
  2. Costout of 100 · 30%62.1
  3. Promoting interoperabilityout of 100 · 25%77.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

516 nurse practitioner records list a practice address in Madison

They are 516 of the 15,014 NPPES records with a practice address in Madison, 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 Ruth A. Diaz De Leon, NP's NPI number?

Ruth A. Diaz De Leon, NP's National Provider Identifier (NPI) is 1730157116, issued on Mar 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ruth A. Diaz De Leon, NP located?

The NPPES record lists a practice address at 25 Jaarsma CT, Madison, WI, 53716. Phone: (608) 263-5010. Providers update this record themselves, so call before visiting.

How can I verify Ruth A. Diaz De Leon, NP's license?

NPPES lists Wisconsin license number 876, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Ruth A. Diaz De Leon, NP prescribe under Medicare Part D?

In 2024, Ruth A. Diaz De Leon, NP had 106 Medicare Part D claims for 36 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.

What is Ruth A. Diaz De Leon, NP's MIPS final score?

The 2023 MIPS final score is 77.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.