ANTONIA SIERRA LITTLETON AMFT
NPI 1578425104
Marriage & Family Therapist in San Francisco, CA

Q: What is Antonia Littleton's NPI number?

The NPI number for Antonia Littleton is 1578425104. It was assigned to this individual provider in the NPPES registry on December 2, 2025.

Q: What is Antonia Littleton's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Antonia Littleton was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.

Active since December 02, 2025

221 16TH AVE APT 3, SAN FRANCISCO, CA 94118(510) 965-2072 Get Directions Write a Review

NPPES record last updated: December 2, 2025. Verified against the NPPES registry weekly; last sync: September 06, 2026.

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About Antonia Sierra Littleton Amft NPPES

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

ANTONIA SIERRA LITTLETON AMFT (NPI 1578425104) is an individual marriage & family therapist in San Francisco, California, licensed in California (158729) and active in the NPI registry since December 2025.

NPPES Registry Identity

NPI1578425104

Entity TypeIndividualFemale

Primary Taxonomy106H00000X

Provider Legal NameANTONIA SIERRA LITTLETONCredential: AMFT

Location Address221 16TH AVE APT 3San Francisco, CA 94118-1058

Mailing Address221 16th Ave Apt 3San Francisco, CA 94118-1058 · (510) 965-2072

Phone(510) 965-2072

Sole ProprietorNo

Enumeration DateDecember 2, 2025

NPPES CertifiedDecember 2, 2025

✔ NPI 1578425104 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 CA · 158729

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.

221 16TH AVE APT 3, San Francisco, CA 94118

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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 Antonia Littleton's NPI number?

The NPI number for Antonia Littleton is 1578425104. It was assigned to this individual provider in the NPPES registry on December 2, 2025.

Where is Antonia Littleton located?

Antonia Littleton practices at 221 16th Ave Apt 3, San Francisco, CA 94118. The listed phone number is (510) 965-2072.

What is Antonia Littleton's specialty?

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

When was this NPI record last updated?

The NPPES record for Antonia Littleton was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.