NPPES file of Aug 9, 2026

Mariah Jeanne Siebers, RPH

Pharmacist · Livermore, CA

Mariah Jeanne Siebers, RPH is a pharmacist with a practice address in Livermore, California, and NPI 1962703744, issued on Nov 9, 2010. Check the license (California RPH30609, 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
1962703744
Name
Mariah Jeanne Siebers
Credential
RPH
Primary taxonomy
Pharmacist 183500000X
License number
RPH30609 CA
Self-reported in NPPES; status is on the state search
Practice location
4495 First St, Livermore, CA 94551
Phone
(925) 455-2522
Enumerated
Nov 9, 2010
Record last updated
Nov 9, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(925) 455-2525
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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8 nearest pharmacist records → All 32,533 in California → Look up another NPI →

Also registered at 4495 First St

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

  1. Kay IhnPharmacist1124304423
  2. Elaine Mac, PHARMDPharmacist1790294411
  3. Karen Maguire, PHARMDPharmacist1922308394
  4. Gordon Ng, PHARM.DPharmacist1225318223
  5. Amanda NgoPharmacist1366952558
  6. Mary Petersen, PHARM DPharmacist1609176163

Verify Mariah Jeanne Siebers 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 RPH30609    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

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Mariah Jeanne Siebers among 32,533 pharmacist records in California

Mariah Jeanne Siebers, RPH is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2010, is newer than 12% of them.

  • NPI issued2010 · 12% of these records are older, 82% newer
  • In a Medicare fileNo · 15% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2010 · 76% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

194 pharmacist records list a practice address in Livermore

They are 194 of the 994 NPPES records with a practice address in Livermore, and 32,533 pharmacist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 32,533 in California → Every provider in Livermore → Pharmacist nationwide →

The 8 pharmacist records with the nearest ZIP codes

  1. Evelyn Chun, PHARM.D.Livermore, CA 945511013116185
  2. Ray Deguia, PHARM.D.Livermore, CA 945511659460616
  3. Daisy Arabelle Evangelista, PHARM.D.Livermore, CA 945511326111758
  4. Emma June, RPHLivermore, CA 945511932311404
  5. Terry LauLivermore, CA 945511386710671
  6. Doris Lew, PHARM.D.Livermore, CA 945511750475737
  7. Masy Miller, PHARM.D.Livermore, CA 945511245313394
  8. James Moore, RPHLivermore, CA 945511164541520

Common questions

What is Mariah Jeanne Siebers, RPH's NPI number?

Mariah Jeanne Siebers, RPH's National Provider Identifier (NPI) is 1962703744, issued on Nov 9, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Mariah Jeanne Siebers, RPH located?

The NPPES record lists a practice address at 4495 First St, Livermore, CA, 94551. Phone: (925) 455-2522. Providers update this record themselves, so call before visiting.

How can I verify Mariah Jeanne Siebers, RPH's license?

NPPES lists California license number RPH30609, 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.