NPPES file of Aug 9, 2026

Mary Seiersen, RDE

Registered Dietitian · Los Alamitos, CA

Mary Seiersen, RDE is a registered dietitian with a practice address in Los Alamitos, California, and NPI 1538282983, issued on Apr 9, 2007. Check the license (California 711000, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1538282983
Name
Mary Seiersen
Credential
RDE
Primary taxonomy
Registered Dietitian 133V00000X
License number
711000 CA
Self-reported in NPPES; status is on the state search
Practice location
3851 Katella Ave Ste 275, Los Alamitos, CA 90720
Phone
(562) 296-5528
Enumerated
Apr 9, 2007
Record last updated
Dec 28, 2023
Fax
(562) 296-8506
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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Also registered at 3851 Katella Ave Ste 275

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

  1. Veronica Zoleta, NPFamily Nurse Practitioner1992446868

Verify Mary Seiersen 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 711000    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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Registered Dietitian providers in California

There are 7,148 registered dietitian records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,148 in California → Every provider in Los Alamitos →

Other registered dietitian records in California

  1. Nazanin Abbaspour, PHD, RDN, IFNCPSan Diego, CA1871180695
  2. Michelle AbbeySan Diego, CA1932692878
  3. Emily AbbottTorrance, CA1477064871
  4. Fatima Azzahra Abdelhafeez, RDAnaheim, CA1356003727
  5. Sulaima Abdin-ArafehPomona, CA1366980765
  6. Tamara Abdul Hadi, MSLos Angeles, CA1669356754
  7. Anita Abdul-KarimPasadena, CA1619365970
  8. Ruqaya AbdulkhaliqLong Beach, CA1447124037
  9. Ran Abe, R.D.Long Beach, CA1093186173
  10. Allison Abel, RDN, CNSCLos Angeles, CA1346664414

Common questions

What is Mary Seiersen, RDE's NPI number?

Mary Seiersen, RDE's National Provider Identifier (NPI) is 1538282983, issued on Apr 9, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mary Seiersen, RDE located?

The NPPES record lists a practice address at 3851 Katella Ave Ste 275, Los Alamitos, CA, 90720. Phone: (562) 296-5528. Providers update this record themselves, so call before visiting.

How can I verify Mary Seiersen, RDE's license?

NPPES lists California license number 711000, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.