NPPES file of Aug 9, 2026

Arthur Siebesian, MFT

Marriage & Family Therapist · Gardena, CA

Arthur Siebesian, MFT is a marriage & family therapist with a practice address in Gardena, California, and NPI 1861985996, issued on Jun 13, 2018. 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
1861985996
Name
Arthur Siebesian
Credential
MFT
Primary taxonomy
Marriage & Family Therapist 106H00000X
License number
M.2200226 OH
Self-reported in NPPES; status is on the state search
Practice location
1225 W 190TH St Ste 280, Gardena, CA 90248
Phone
(877) 515-8113
Enumerated
Jun 13, 2018
Record last updated
Jul 21, 2026
Medicare enrollment
Enrolled (PECOS I20251125004926); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 1225 W 190TH St Ste 280

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

  1. Ebtessam AbdelbasetDay Training/Habilitation Specialist1407624125
  2. Mahmoud Aborabeh, MDPsychiatry Physician1720439672
  3. Adeshewa Adekunbi, MDChild & Adolescent Psychiatry Physician1083134829
  4. Olajumoke AdeyemiPsychiatric/Mental Health Nurse Practitioner1114323755
  5. Wendy Agyapong, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1164308656
  6. Felix Ahmedov, RNPsychiatric/Mental Health Registered Nurse1083372361

Verify Arthur Siebesian 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. Ehab Yacoub MD IncGardena, CA

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

Arthur Siebesian among 59,889 marriage & family therapist records in California

Arthur Siebesian, MFT 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 2018, is newer than 61% of them.

  • NPI issued2018 · 61% of these records are older, 34% newer
  • In a Medicare fileYes · 4% of these records are
  • In the CMS Doctors and Clinicians fileYes · 8% of these records are
  • Graduated2019 · 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).

160 marriage & family therapist records list a practice address in Gardena

They are 160 of the 4,627 NPPES records with a practice address in Gardena, and 59,889 marriage & family therapist records in California.

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

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

  1. Stan Benoit, M.S.Gardena, CA 902481083783906
  2. Staci Boehle, LMFTGardena, CA 902481649302837
  3. Suzanne BuckleyGardena, CA 902481861522658
  4. Richard Coleman, MFTGardena, CA 902481891825378
  5. Cheryl Garnica, M.A., LMFTGardena, CA 902481184775272
  6. Cesar Gonzalez, MFTIGardena, CA 902481851423677
  7. Georgette Greer-Brewer, LMFTGardena, CA 902481437287331
  8. Efrain Ibarra, M.A. LMFTGardena, CA 902481427193770

Common questions

What is Arthur Siebesian, MFT's NPI number?

Arthur Siebesian, MFT's National Provider Identifier (NPI) is 1861985996, issued on Jun 13, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Arthur Siebesian, MFT located?

The NPPES record lists a practice address at 1225 W 190TH St Ste 280, Gardena, CA, 90248. Phone: (877) 515-8113. Providers update this record themselves, so call before visiting.

How can I verify Arthur Siebesian, MFT'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.