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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ARTHUR SIEBESIAN MFT
NPI 1861985996
Marriage & Family Therapist in Gardena, CA

Active since June 13, 2018PECOS EnrolledAccepts Medicare Assignment
1225 W 190TH ST STE 280, GARDENA, CA 90248(877) 515-8113 Get Directions Write a Review

NPPES record last updated: July 21, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 21, 2026, Sep 7, 2022, Aug 29, 2022 and 1 more (4 updates tracked since 2018).

About Arthur Siebesian Mft NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ARTHUR SIEBESIAN MFT (NPI 1861985996) is an individual marriage & family therapist in Gardena, California, licensed in Ohio (M.2200226) and active in the NPI registry since June 2018. He is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1861985996
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameARTHUR SIEBESIANCredential: MFT
Location Address1225 W 190TH ST STE 280Gardena, CA 90248-4305
Mailing Address700 Childrens DrColumbus, OH 43205-2639 · (614) 722-2000
Phone(877) 515-8113
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateJune 13, 2018
Last NPPES UpdateJuly 21, 20264 updates tracked since enumeration
NPPES CertifiedJuly 21, 2026
✔ NPI 1861985996 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in OH · M.2200226
Definition
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.
1225 W 190TH ST STE 280, Gardena, CA 90248
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Arthur Siebesian Mft is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1456843465
PECOS Enrollment IDI20251125004926
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JUAN CRISTOBAL RONDEAU MD
Psychiatry & Neurology (Psychiatry)
1225 W 190TH ST STE 280
GARDENA, CA 90248
Los Angeles County (877) 515-8113
DR. MANUEL RAMON MOTA-CASTILLO MD
Psychiatry & Neurology (Psychiatry)
1225 W 190TH ST STE 280
GARDENA, CA 90248
Los Angeles County (877) 515-8113
MS. ADALJIZA TAVERA PMHNP, FNP
Nurse Practitioner (Family)
1225 W 190TH ST STE 280
GARDENA, CA 90248
Los Angeles County (310) 515-8113
EVELYN GARCIA
Nurse Practitioner (Psychiatric/Mental Health)
1225 W 190TH ST STE 280
GARDENA, CA 90248
Los Angeles County (877) 515-8113
GLORIA S ORIGEL PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
1225 W 190TH ST STE 280
GARDENA, CA 90248
Los Angeles County (877) 515-8113
MRS. ADESHEWA ADEKUNBI MD
Psychiatry & Neurology (Child & Adolescent Psychiatry)
1225 W 190TH ST STE 280
GARDENA, CA 90248
Los Angeles County (877) 515-8113
FELIX NA AHMEDOV RN
Registered Nurse (Psychiatric/Mental Health)
1225 W 190TH ST STE 280
GARDENA, CA 90248
Los Angeles County (310) 515-8113
MS. NECHELLE LASHAY FREEMAN RN, BSN
Nurse Practitioner (Psychiatric/Mental Health)
1225 W 190TH ST STE 280
GARDENA, CA 90248
Los Angeles County (559) 341-8373

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Arthur Siebesian's NPI number?

The NPI number for Arthur Siebesian is 1861985996. It was assigned to this individual provider in the NPPES registry on June 13, 2018.

Where is Arthur Siebesian located?

Arthur Siebesian practices at 1225 W 190th St Ste 280, Gardena, CA 90248. The listed phone number is (877) 515-8113.

What is Arthur Siebesian's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

Is Arthur Siebesian enrolled in Medicare?

Yes. Arthur Siebesian is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Arthur Siebesian was last updated on July 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.