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MARISSA TERENVALDIVIA GUERRERO
NPI 1922448190
Marriage & Family Therapist in Fountain Valley, CA

Active since July 02, 2013PECOS EnrolledAccepts Medicare Assignment
18350 MOUNT LANGLEY ST STE 200, FOUNTAIN VALLEY, CA 92708(714) 450-4118 Get Directions Write a Review

NPPES record last updated: December 14, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 14, 2020, Jul 17, 2020, Jul 8, 2020 (3 updates tracked since 2020).

About Marissa Terenvaldivia Guerrero NPPES

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

MARISSA TERENVALDIVIA GUERRERO (NPI 1922448190) is an individual marriage & family therapist in Fountain Valley, California, licensed in California (83676) and active in the NPI registry since July 2013. She is enrolled in Medicare PECOS, maintains a secondary practice location in Riverside, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1922448190
Entity TypeIndividualFemale
Primary Taxonomy106H00000X
Provider Legal NameMARISSA TERENVALDIVIA GUERRERO
Location Address18350 MOUNT LANGLEY ST STE 200Fountain Valley, CA 92708-6912
Mailing Address18350 Mount Langley St Ste 200Fountain Valley, CA 92708-6912 · (714) 450-4118
Phone(714) 450-4118
Sole ProprietorYes
Medical School CMSOtherGraduated 2020
Enumeration DateJuly 2, 2013
Last NPPES UpdateDecember 14, 20203 updates tracked since enumeration
NPPES CertifiedDecember 14, 2020
✔ NPI 1922448190 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 · 83676
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.
18350 MOUNT LANGLEY ST STE 200, Fountain Valley, CA 92708
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Secondary Practice Location 1

Location 119322 Jesse Ln Ste 200Riverside, CA 92508-5072 · Phone (951) 387-4040 · Fax (951) 398-3144

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marissa Terenvaldivia Guerrero 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 ID1052857430
PECOS Enrollment IDI20240722002189
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.

Medicare Billing Reassignment

Medicare enrollment records show Marissa Guerrero reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ocean Psychiatry Inc
350 mi
Psychiatry
39210 STATE ST STE 100
Fremont, CA 94538
  • Reassigned Medicare billing, California enrollment
  • 31 clinicians in this Medicare group
NPI 1396306338 (510) 451-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 8

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

ANA CARINA D'ABREU
Psychologist
18350 MOUNT LANGLEY ST STE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 378-2620
MISS LISSETT CHAVEZ MURILLO
Counselor (Professional)
18350 MOUNT LANGLEY ST STE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 378-2620
MRS. RAMONA IBARRA ESCALERA NERI
Marriage & Family Therapist
18350 MOUNT LANGLEY ST STE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 450-4118
MS. STEPHANY CLARA GUZMAN
Marriage & Family Therapist
18350 MOUNT LANGLEY ST STE 200
FOUNTAIN VALLEY, CA 92708
Orange County (949) 855-1556
CANDIE MENDEZ B.A
Counselor (Mental Health)
18350 MOUNT LANGLEY ST STE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 578-2620
ARVELY DENISSE LOPEZ
Marriage & Family Therapist
18350 MOUNT LANGLEY ST STE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 450-4118
MARTHA VERONICA GARCIA ACSW
Social Worker (Clinical)
18350 MOUNT LANGLEY ST STE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 450-4118
GUADALUPE VIRGINIA GALINDO MARTINEZ MSW, ASW
Social Worker
18350 MOUNT LANGLEY ST STE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 450-4118

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 Marissa Guerrero's NPI number?

The NPI number for Marissa Guerrero is 1922448190. It was assigned to this individual provider in the NPPES registry on July 2, 2013.

Where is Marissa Guerrero located?

Marissa Guerrero practices at 18350 Mount Langley St Ste 200, Fountain Valley, CA 92708. The listed phone number is (714) 450-4118.

What is Marissa Guerrero's specialty?

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

Is Marissa Guerrero enrolled in Medicare?

Yes. Marissa Guerrero 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.

Which organization bills Medicare for Marissa Guerrero's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Guerrero reassigns Medicare benefits to Ocean Psychiatry Inc (Fremont, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marissa Guerrero's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Marissa Guerrero was last updated on December 14, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.