NPPES file of Aug 9, 2026

Delon Isom, PHD

Counselor · Rialto, CA

Delon Isom, PHD is a counselor with a practice address in Rialto, California, and NPI 1962929448, issued on Aug 25, 2017. Check the license 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
1962929448
Name
Delon Isom
Credential
PHD
Primary taxonomy
Counselor 101Y00000X
Practice location
689 N Beechwood Ave, Rialto, CA 92376
Phone
(909) 990-5438
Enumerated
Aug 25, 2017
Record last updated
Mar 21, 2019 (not updated in 7 years: call before relying on the address or phone)
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 689 N Beechwood Ave

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

  1. Denise MaldonadoMental Health Counselor1982156311
  2. Richard SpicerCounselor1154873412

Verify Delon Isom in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
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30 counselor records list a practice address in Rialto

They are 30 of the 1,044 NPPES records with a practice address in Rialto, and 13,723 counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 30 in Rialto → All 13,723 in California → Every provider in Rialto →

Other counselor records in California

  1. Brandi AagesonSan Diego, CA1316085426
  2. Ted AamesFort Bragg, CA1447500988
  3. Crystal AanderudRichmond, CA1083841761
  4. Cedric Aaron, MSW, ASWEureka, CA1245461268
  5. Regina AbadajosOakland, CA1851856488
  6. Erica AbaraCamarillo, CA1104099282
  7. Jennifer AbarcaOakland, CA1760955926
  8. Marina AbbottPetaluma, CA1669592184
  9. Robert Abbott-Florez, M.A.Petaluma, CA1568617280
  10. Sofia AbbushiSan Carlos, CA1154974301

Common questions

What is Delon Isom, PHD's NPI number?

Delon Isom, PHD's National Provider Identifier (NPI) is 1962929448, issued on Aug 25, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Delon Isom, PHD located?

The NPPES record lists a practice address at 689 N Beechwood Ave, Rialto, CA, 92376. Phone: (909) 990-5438. Providers update this record themselves, so call before visiting.

How can I verify Delon Isom, PHD's license?

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.