ALEXANDRA JOY SIDEROFF LMFT, LMHC
NPI 1356599831
Marriage & Family Therapist in Berkeley, CA

Q: What is Alexandra Sideroff's NPI number?

The NPI number for Alexandra Sideroff is 1356599831. It was assigned to this individual provider in the NPPES registry on September 9, 2008.

Q: What is Alexandra Sideroff's specialty?

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

Q: Is Alexandra Sideroff enrolled in Medicare?

No. Alexandra Sideroff has opted out of Medicare through January 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Active since September 09, 2008Opted out of Medicare · through Jan 1, 2028

1918 BONITA AVE STE 200, BERKELEY, CA 94704(415) 944-7685 Get Directions Write a Review

NPPES record last updated: January 11, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 11, 2022, Apr 19, 2021 (2 updates tracked since 2021).

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About Alexandra Joy Sideroff Lmft, Lmhc NPPES

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

ALEXANDRA JOY SIDEROFF LMFT, LMHC (NPI 1356599831) is an individual marriage & family therapist in Berkeley, California and active in the NPI registry since September 2008. She has opted out of Medicare through January 1, 2028.

NPPES Registry Identity

NPI1356599831

Entity TypeIndividualFemale

Primary Taxonomy106H00000X

Provider Legal NameALEXANDRA JOY SIDEROFFCredential: LMFT, LMHC

Location Address1918 BONITA AVE STE 200Berkeley, CA 94704-1014

Mailing Address1918 Bonita Ave Ste 200Berkeley, CA 94704-1014 · (415) 944-7685

Phone(415) 944-7685

Sole ProprietorYes

Enumeration DateSeptember 9, 2008

Last NPPES UpdateJanuary 11, 20222 updates tracked since enumeration

NPPES CertifiedJanuary 11, 2022

✔ NPI 1356599831 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers

Taxonomy Code106H00000X

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.

1918 BONITA AVE STE 200, Berkeley, CA 94704

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

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Opted out of Medicare

Alexandra Joy Sideroff Lmft, Lmhc has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2024 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2024

Opt-Out In Effect ThroughJanuary 1, 2028Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Other Providers at the Same Location NPPES 17

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

PSYCHOSOCIAL THERAPY LICENSED MARRIAGE AND FAMILY THERAPISTS INC.

Marriage & Family Therapist