NPPES file of Aug 9, 2026

Karen Shields Mayo, FNP-BC

Family Nurse Practitioner · Mather, CA

Karen Shields Mayo, FNP-BC is a family nurse practitioner with a practice address in Mather, California, and NPI 1144521758, issued on Nov 12, 2010. Check the license (California NP20347, 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
1144521758
Name
Karen Shields Mayo
Credential
FNP-BC
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
NP20347 CA
RN426218 CA
Self-reported in NPPES; status is on the state search
Practice location
10535 Hospital Way, Mather, CA 95655
Phone
(916) 843-7008
Enumerated
Nov 12, 2010
Record last updated
Nov 12, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(916) 843-7088
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 10535 Hospital Way

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

  1. Stephen Aglubat, M.D.Internal Medicine Physician1497070031
  2. Aliya Akbar, M.D.Family Medicine Physician1467454934
  3. Anthony Albanese, M.D.Addiction Medicine (Internal Medicine) Physician1215910187
  4. Sarah AliPharmacist1851871503
  5. Shelby Alley, DPMFoot & Ankle Surgery Podiatrist1588928790
  6. Chibuzo Anyama, APRN PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1841059912

Verify Karen Shields Mayo 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 NP20347    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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12 family nurse practitioner records list a practice address in Mather

They are 12 of the 398 NPPES records with a practice address in Mather, and 16,966 family nurse practitioner records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 12 in Mather → All 16,966 in California → Every provider in Mather →

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 Karen Shields Mayo, FNP-BC's NPI number?

Karen Shields Mayo, FNP-BC's National Provider Identifier (NPI) is 1144521758, issued on Nov 12, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Karen Shields Mayo, FNP-BC located?

The NPPES record lists a practice address at 10535 Hospital Way, Mather, CA, 95655. Phone: (916) 843-7008. Providers update this record themselves, so call before visiting.

How can I verify Karen Shields Mayo, FNP-BC's license?

NPPES lists California license number NP20347, 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.