NPPES file of Aug 9, 2026

Erin Allyson Kopp, NP

Nurse Practitioner · Duarte, CA

Erin Allyson Kopp, NP is a nurse practitioner with a practice address in Duarte, California, and NPI 1629381827, issued on Jul 16, 2010. Check the license (California 18559, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629381827
Name
Erin Allyson Kopp
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
18559 CA
Self-reported in NPPES; status is on the state search
Practice location
1500 Duarte RD, Duarte, CA 91010
Phone
(626) 256-4673
Enumerated
Jul 16, 2010
Record last updated
Nov 10, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20140630000950); 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 1500 Duarte RD

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

  1. Chelsea Abad, CRNP, AGPCNP - BCGerontology Nurse Practitioner1952848137
  2. Wajidah Abdul-KhabirHospitalist Physician1215323522
  3. Farah Abdulla, MDDermatology Physician1093934390
  4. Megan Abel, PA-CPhysician Assistant1104100619
  5. Michelle Afkhami, M.D.Hematology (Pathology) Physician1326230228
  6. Vaibhav Agrawal, M.D.Hematology & Oncology Physician1538402565

Verify Erin Allyson Kopp 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 18559
    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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95% fewer Medicare Part D claims than the average nurse practitioner in 2024

57 Medicare Part D claims, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.

  1. Erin Kopp57
  2. Specialty average1,109

Most prescribed

  1. Imbruvica13 claims
  2. Potassium Chloride11 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): 99.1 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 score85.2
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  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).

Industry payments in 2024: $17,053.71

59 payments; by number, the most common kind was food and beverage; the largest payer was Incyte Corporation. 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. Erin Kopp$17,054
  2. Specialty average$792

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. City OF Hope Medical FoundationDuarte, CA

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

Erin Allyson Kopp among 8,223 nurse practitioner records in California

Erin Allyson Kopp, NP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 32% of them.

  • NPI issued2010 · 32% of these records are older, 66% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated2008 · median 2017 among the 3,425 with a school on file
  • Record last updated2020 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

25 nurse practitioner records list a practice address in Duarte

They are 25 of the 1,287 NPPES records with a practice address in Duarte, and 8,223 nurse practitioner records in California.

The 8 nurse practitioner records with the nearest ZIP codes

  1. Jennifer Aquino-Bautista, FNPDuarte, CA 910101932529047
  2. Laura Bourdeanu, NPDuarte, CA 910101528182508
  3. Erica Chin, RN, NP, MSDuarte, CA 910101013140219
  4. Carrie Christiansen, NURSE PRACTITIONERDuarte, CA 910101245342336
  5. Cynthia Kelly, NPDuarte, CA 910101528278462
  6. Abigail Martin, CNPDuarte, CA 910101548412455
  7. Carmen Sedgeman, NPDuarte, CA 910101154579290
  8. Duveen Sturgeon, MSN, ACNP-BCDuarte, CA 910101922426543

Common questions

What is Erin Allyson Kopp, NP's NPI number?

Erin Allyson Kopp, NP's National Provider Identifier (NPI) is 1629381827, issued on Jul 16, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Erin Allyson Kopp, NP located?

The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (626) 256-4673. Providers update this record themselves, so call before visiting.

How can I verify Erin Allyson Kopp, NP's license?

NPPES lists California license number 18559, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Erin Allyson Kopp, NP prescribe under Medicare Part D?

In 2024, Erin Allyson Kopp, NP had 57 Medicare Part D claims; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.

What is Erin Allyson Kopp, NP's MIPS final score?

The 2023 MIPS final score is 99.1 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.