NPPES file of Aug 9, 2026

Marilyn Oyan Lapaix

Family Nurse Practitioner · Lake Elsinore, CA

Marilyn Oyan Lapaix is a family nurse practitioner with a practice address in Lake Elsinore, California, and NPI 1861275927, issued on Aug 14, 2023. Check the license (California 95026469, 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
1861275927
Name
Marilyn Oyan Lapaix
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95026469 CA
Self-reported in NPPES; status is on the state search
Practice location
34220 Sundew CT, Lake Elsinore, CA 92532
Phone
(747) 252-6241
Enumerated
Aug 14, 2023
Record last updated
Aug 15, 2023
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 Marilyn Oyan Lapaix 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 95026469
    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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2.3 times the Medicare Part D claims of the average family nurse practitioner in 2024

2,941 Medicare Part D claims for 207 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 77 claims were for opioids.

  1. Marilyn Lapaix2,941
  2. Specialty average1,305

Most prescribed

  1. Atorvastatin Calcium169 claims
  2. Gabapentin133 claims
  3. Losartan Potassium104 claims
  4. Metformin Hcl96 claims
  5. Furosemide84 claims
  6. Icosapent Ethyl80 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: $28.50

1 payment: food and beverage; the largest payer was Neurocrine Biosciences, Inc. 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.

  1. Marilyn Lapaix$28.50
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

12 family nurse practitioner records list a practice address in Lake Elsinore

They are 12 of the 818 NPPES records with a practice address in Lake Elsinore, and 16,966 family nurse practitioner records in California.

Other family nurse practitioner records in California

  1. Danielle Aaroe, FAMILY NURSE PRACTITOroville, CA1750767083
  2. Joshua AaronMission Hills, CA1477291805
  3. Orly Aaron, NPSan Francisco, CA1376912451
  4. Paris Gilbert Russ AaronSacramento, CA1871079111
  5. Tiffanne Aaronsen, FNPIndio, CA1568191807
  6. Alvin Joseph Abad, FNP-CSan Francisco, CA1154919306
  7. Frances Abad, FNPLos Angeles, CA1053504514
  8. Nnenna AbaezeLong Beach, CA1457820763
  9. Raymond Abagat, FNPTorrance, CA1306685821
  10. Ashley AbalCastaic, CA1740140698

Common questions

What is Marilyn Oyan Lapaix's NPI number?

Marilyn Oyan Lapaix's National Provider Identifier (NPI) is 1861275927, issued on Aug 14, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Marilyn Oyan Lapaix located?

The NPPES record lists a practice address at 34220 Sundew CT, Lake Elsinore, CA, 92532. Phone: (747) 252-6241. Providers update this record themselves, so call before visiting.

How can I verify Marilyn Oyan Lapaix's license?

NPPES lists California license number 95026469, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Marilyn Oyan Lapaix prescribe under Medicare Part D?

In 2024, Marilyn Oyan Lapaix had 2,941 Medicare Part D claims for 207 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.