NPPES file of Aug 9, 2026

Ariana Neddermann, FNP-C

Family Nurse Practitioner · Downey, CA

Ariana Neddermann, FNP-C is a family nurse practitioner with a practice address in Downey, California, and NPI 1548049471, issued on Sep 28, 2023. Check the license (California NP95024407, 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
1548049471
Name
Ariana Neddermann
Credential
FNP-C
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
NP95024407 CA
Self-reported in NPPES; status is on the state search
Practice location
11525 Brookshire Ave Ste 202, Downey, CA 90241
Phone
(562) 869-1201
Enumerated
Sep 28, 2023
Record last updated
Sep 28, 2023
Medicare enrollment
Enrolled (PECOS I20231020000916); 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 11525 Brookshire Ave Ste 202

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

  1. Lana Naamani, FNPNurse Practitioner1588522460
  2. Elizabeth PhamFamily Nurse Practitioner1366193120

Verify Ariana Neddermann 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 NP95024407
    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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56% fewer Medicare Part D claims than the average family nurse practitioner in 2024

573 Medicare Part D claims for 204 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.

  1. Ariana Neddermann573
  2. Specialty average1,305

Most prescribed

  1. Eliquis38 claims
  2. Orgovyx31 claims
  3. Anastrozole25 claims
  4. Lupron Depot22 claims
  5. Xtandi22 claims
  6. Letrozole21 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: $3,940.91

120 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. 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. Ariana Neddermann$3,940.91
  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.

Bills Medicare through one group practice

  1. The Oncology Institute CA, A Professional CorporationDowney, CA

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

Ariana Neddermann among 16,966 family nurse practitioner records in California

Ariana Neddermann, 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 2023, is newer than 75% of them.

  • NPI issued2023 · 75% of these records are older, 17% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2022 · median 2019 among the 6,793 with a school on file
  • Record last updated2023 · 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).

94 family nurse practitioner records list a practice address in Downey

They are 94 of the 3,607 NPPES records with a practice address in Downey, and 16,966 family nurse practitioner records in California.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Cecilia Ann, NPDowney, CA 902411306212717
  2. Donna Butts, N.P.Downey, CA 902411225189756
  3. Veronica Castaneda, NURSE PRACTITIONERDowney, CA 902411164965596
  4. Roxanne Chavez, FNP-CDowney, CA 902411437579547
  5. Angela CollinsDowney, CA 902411235567538
  6. Janessa Creado, NPDowney, CA 902411306078027
  7. Nkechi Ikejiofor, FNPDowney, CA 902411760813380
  8. Anais Lane, NPDowney, CA 902411811261084

Common questions

What is Ariana Neddermann, FNP-C's NPI number?

Ariana Neddermann, FNP-C's National Provider Identifier (NPI) is 1548049471, issued on Sep 28, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Ariana Neddermann, FNP-C located?

The NPPES record lists a practice address at 11525 Brookshire Ave Ste 202, Downey, CA, 90241. Phone: (562) 869-1201. Providers update this record themselves, so call before visiting.

How can I verify Ariana Neddermann, FNP-C's license?

NPPES lists California license number NP95024407, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Ariana Neddermann, FNP-C prescribe under Medicare Part D?

In 2024, Ariana Neddermann, FNP-C had 573 Medicare Part D claims for 204 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.