NPPES file of Aug 9, 2026

Marcus Marquez

Marriage & Family Therapist · Fontana, CA

Marcus Marquez is a marriage & family therapist with a practice address in Fontana, California, and NPI 1396343711, issued on Oct 16, 2020. Check the license 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1396343711
Name
Marcus Marquez
Primary taxonomy
Marriage & Family Therapist 106H00000X
Practice location
9961 Sierra Ave, Fontana, CA 92335
Phone
(866) 205-3595
Enumerated
Oct 16, 2020
Record last updated
Aug 7, 2026
Medicare enrollment
Enrolled (PECOS I20260216001032); accepts Medicare assignment
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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8 nearest marriage & family therapist records → All 59,889 in California → Look up another NPI →

Also registered at 9961 Sierra Ave

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

  1. Solomon Abila, MDFamily Medicine Physician1871652479
  2. Jenny Abouelsood, M.D.Family Medicine Physician1457638512
  3. Marla Abrolat, MDPediatrics Physician1164593133
  4. Eduardo Acosta, MDPediatrics Physician1497803324
  5. Michael Adair, MDFamily Medicine Physician1780732651
  6. Berneva Adams, MDObstetrics & Gynecology Physician1376602987

Verify Marcus Marquez 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
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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Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupFontana, CA

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

Marcus Marquez among 59,889 marriage & family therapist records in California

Marcus Marquez is one of 59,889 marriage & family therapist records with a practice address in California. 4% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 71% of them.

  • NPI issued2020 · 71% of these records are older, 25% newer
  • In a Medicare fileYes · 4% of these records are
  • In the CMS Doctors and Clinicians fileYes · 8% of these records are
  • Graduated2021 · median 2013 among the 4,574 with a school on file
  • Record last updated2026 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 106H00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

82 marriage & family therapist records list a practice address in Fontana

They are 82 of the 3,012 NPPES records with a practice address in Fontana, and 59,889 marriage & family therapist records in California.

All 59,889 in California → Every provider in Fontana → Marriage & Family Therapist nationwide →

The 8 marriage & family therapist records with the nearest ZIP codes

  1. John Elder, MFTFontana, CA 923351831393974
  2. Teresita GonzalezFontana, CA 923351629296637
  3. Regina Holmes, M.F.T.Fontana, CA 923351609070234
  4. Kathryn Kawecki, MFTFontana, CA 923351528261021
  5. Nicole Lopez, M.S.Fontana, CA 923351255524815
  6. Michelle Martinez, M.S.Fontana, CA 923351124182928
  7. Richard Myatt, LMFTFontana, CA 923351831207489
  8. Brenda OliverFontana, CA 923351467588269

Common questions

What is Marcus Marquez's NPI number?

Marcus Marquez's National Provider Identifier (NPI) is 1396343711, issued on Oct 16, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Marcus Marquez located?

The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (866) 205-3595. Providers update this record themselves, so call before visiting.

How can I verify Marcus Marquez'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. Medicare files from data.cms.gov. 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.