NPPES file of Aug 9, 2026

Madeleine Matilde Ayllon, MSN, FNP-C

Family Nurse Practitioner · El Monte, CA

Madeleine Matilde Ayllon, MSN, FNP-C is a family nurse practitioner with a practice address in El Monte, California, and NPI 1811401557, issued on Nov 16, 2017. Check the license (California 95006873, as entered in NPPES) with the California 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
1811401557
Name
Madeleine Matilde Ayllon
Credential
MSN, FNP-C
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95006873 CA
Self-reported in NPPES; status is on the state search
Practice location
10418 Valley Blvd, El Monte, CA 91731
Phone
(626) 582-1439
Enumerated
Nov 16, 2017
Record last updated
Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20201118002838); 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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Also registered at 10418 Valley Blvd

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

  1. Karla AmayaAdministrator Registered Nurse1578913091
  2. Mylen BenitezFamily Nurse Practitioner1487021036
  3. Salvador Castillo, RDNRegistered Dietitian1679037477
  4. Maria ChanNurse's Aide1306188404
  5. Amber ChavezNurse's Aide1811239494
  6. Sandar Chen, MDInternal Medicine Physician1255747069

Verify Madeleine Matilde Ayllon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95006873
    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 California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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73% fewer Medicare Part D claims than the average family nurse practitioner in 2024

349 Medicare Part D claims for 197 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.

  1. Madeleine Matilde Ayllon349
  2. Specialty average1,305

Most prescribed

  1. Fluticasone Propionate26 claims
  2. Diclofenac Sodium20 claims
  3. Naproxen17 claims
  4. Omeprazole14 claims
  5. Cephalexin12 claims
  6. Gabapentin11 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

  1. Southern California Permanente Medical GroupPanorama City, CA

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

Madeleine Matilde Ayllon among 16,966 family nurse practitioner records in California

Madeleine Matilde Ayllon, MSN, FNP-C is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 40% of them.

  • NPI issued2017 · 40% of these records are older, 55% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2017 · median 2019 among the 6,793 with a school on file
  • Record last updated2021 · 42% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

28 family nurse practitioner records list a practice address in El Monte

They are 28 of the 1,528 NPPES records with a practice address in El Monte, and 16,966 family nurse practitioner records in California.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Marirose Adlao, NPEl Monte, CA 917311639508112
  2. Mylen BenitezEl Monte, CA 917311487021036
  3. Mary Borja, RNPEl Monte, CA 917311952506982
  4. Norma Collie, FNP-CEl Monte, CA 917311588061832
  5. Joann Han, DNP, FNPEl Monte, CA 917311760802656
  6. Sylvia Heiser, MSN, RN, FNP-CEl Monte, CA 917311508395229
  7. Laura NicaEl Monte, CA 917311750585105
  8. Sarah Park, NPEl Monte, CA 917311629413844

Common questions

What is Madeleine Matilde Ayllon, MSN, FNP-C's NPI number?

Madeleine Matilde Ayllon, MSN, FNP-C's National Provider Identifier (NPI) is 1811401557, issued on Nov 16, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Madeleine Matilde Ayllon, MSN, FNP-C located?

The NPPES record lists a practice address at 10418 Valley Blvd, El Monte, CA, 91731. Phone: (626) 582-1439. Providers update this record themselves, so call before visiting.

How can I verify Madeleine Matilde Ayllon, MSN, FNP-C's license?

NPPES lists California license number 95006873, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Madeleine Matilde Ayllon, MSN, FNP-C prescribe under Medicare Part D?

In 2024, Madeleine Matilde Ayllon, MSN, FNP-C had 349 Medicare Part D claims for 197 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.