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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.

LOREENA TROTTER JOHNSTON
NPI 1083376933
Marriage & Family Therapist in Oakland, CA

Active since October 07, 2021
3800 COOLIDGE AVE, OAKLAND, CA 94602(510) 482-2244 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 16, 2026, Jul 6, 2026, Nov 15, 2024 and 2 more (5 updates tracked since 2021).

About Loreena Trotter Johnston NPPES

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

LOREENA TROTTER JOHNSTON (NPI 1083376933) is an individual marriage & family therapist in Oakland, California and active in the NPI registry since October 2021.

NPPES Registry Identity

NPI1083376933
Entity TypeIndividualFemale
Primary Taxonomy106H00000X
Provider Legal NameLOREENA TROTTER JOHNSTON
Location Address3800 COOLIDGE AVEOakland, CA 94602-3311
Mailing Address3800 Coolidge AveOakland, CA 94602-3311 · (510) 482-2244
Phone(510) 482-2244
Sole ProprietorNo
Enumeration DateOctober 7, 2021
Last NPPES UpdateJuly 16, 20265 updates tracked since enumeration
NPPES CertifiedJuly 16, 2026
✔ NPI 1083376933 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ 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.
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
3800 COOLIDGE AVE, Oakland, CA 94602
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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.

MARY ELLEN ROJAS
Marriage & Family Therapist
3800 COOLIDGE AVE
OAKLAND, CA 94602
Alameda County (510) 482-2244
KAYLA JOANNE DOUGLAS
Student in an Organized Health Care Education/Training Program
3800 COOLIDGE AVE
OAKLAND, CA 94602
Alameda County (510) 482-2244
MICHAELLA HELENA DEAN
Marriage & Family Therapist
3800 COOLIDGE AVE
OAKLAND, CA 94602
Alameda County (510) 482-2244
FRED FINCH YOUTH & FAMILY SERVICES
Adult Companion
3800 COOLIDGE AVE
OAKLAND, CA 94602
Alameda County (510) 482-2244
MR. ROGER WAYNE DANIELS LCSW
Social Worker (Clinical)
3800 COOLIDGE AVE
OAKLAND, CA 94602
Alameda County (510) 482-2244
MS. ALEXIS V. LOWENSTEIN LMFT
Marriage & Family Therapist
3800 COOLIDGE AVE
OAKLAND, CA 94602
Alameda County (510) 482-2244
KENDRA SUNYUNG STAFFORD ROBINSON LMFT
Marriage & Family Therapist
3800 COOLIDGE AVE
OAKLAND, CA 94602
Alameda County (510) 482-2244
MISS MARY KATHERINE COPE MFT
Counselor (Mental Health)
3800 COOLIDGE AVE
OAKLAND, CA 94602
Alameda County (510) 773-9629

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 Loreena Trotter Johnston's NPI number?

The NPI number for Loreena Trotter Johnston is 1083376933. It was assigned to this individual provider in the NPPES registry on October 7, 2021.

Where is Loreena Trotter Johnston located?

Loreena Trotter Johnston practices at 3800 Coolidge Ave, Oakland, CA 94602. The listed phone number is (510) 482-2244.

What is Loreena Trotter Johnston'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 Loreena Trotter Johnston was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.