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MS. ELIZABETH KATHERINE MERCER MFT
NPI 1881724243
Marriage & Family Therapist in West Covina, CA

Active since March 06, 2007PECOS Enrolled
1215 W WEST COVINA PKWY, WEST COVINA, CA 91790(626) 974-0770(626) 974-0770 Get Directions Write a Review

NPPES record last updated: March 9, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ms. Elizabeth Katherine Mercer Mft NPPES

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

MS. ELIZABETH KATHERINE MERCER MFT (NPI 1881724243) is an individual marriage & family therapist in West Covina, California, licensed in California (MFT37968) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881724243
Entity TypeIndividualFemale
Primary Taxonomy106H00000X
Provider Legal NameMS. ELIZABETH KATHERINE MERCERCredential: MFT
Location Address1215 W WEST COVINA PKWYWest Covina, CA 91790-2946
Mailing Address1215 W West Covina PkwyWest Covina, CA 91790-2946 · (626) 974-0770 · Fax (626) 974-0774
Phone(626) 974-0770
Fax(626) 974-0770
Sole ProprietorNo
Enumeration DateMarch 6, 2007
Last NPPES UpdateMarch 9, 2021
NPPES CertifiedMarch 9, 2021
✔ NPI 1881724243 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 · MFT37968
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.
1215 W WEST COVINA PKWY, West Covina, CA 91790
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Elizabeth Katherine Mercer Mft is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Elizabeth Mercer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Enki Health Services, Inc.
7.6 mi
Community/Behavioral Health
3208 ROSEMEAD BLVD, SUITE 100
El Monte, CA 91731
  • Reassigned Medicare billing, California enrollment
  • 71 clinicians in this Medicare group
NPI 1487786166 (626) 227-7001

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 20

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

DR. THERESA PORTUGAL D.O.
Psychiatry & Neurology (Psychiatry)
1215 W WEST COVINA PKWY
WEST COVINA, CA 91790
Los Angeles County (626) 227-7001
MS. HOLLY PUTT RDH
Dental Hygienist
1215 W WEST COVINA PKWY
WEST COVINA, CA 91790
Los Angeles County (626) 962-8911
ALYSHA MCCUISTION
Social Worker (Clinical)
1215 W WEST COVINA PKWY, SUITE 200
WEST COVINA, CA 91790
Los Angeles County (626) 338-9200
CRISTINA ANGELICA DIAZ
Marriage & Family Therapist
1215 W WEST COVINA PKWY
WEST COVINA, CA 91790
Los Angeles County (616) 974-0770
ABIGAIL KHAI YUNG CHIN
Marriage & Family Therapist
1215 W WEST COVINA PKWY
WEST COVINA, CA 91790
Los Angeles County (626) 974-0770
LIANN RENEE LLANOS
Marriage & Family Therapist
1215 W WEST COVINA PKWY
WEST COVINA, CA 91790
Los Angeles County (626) 974-0770
ENKI HEALTH SERVICE, INC.
Community/Behavioral Health
1215 W WEST COVINA PKWY
WEST COVINA, CA 91790
Los Angeles County (626) 974-0770
MR. ADAM GOMEZ III
Marriage & Family Therapist
1215 W WEST COVINA PKWY
WEST COVINA, CA 91790
Los Angeles County (626) 974-0770

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 Elizabeth Mercer's NPI number?

The NPI number for Elizabeth Mercer is 1881724243. It was assigned to this individual provider in the NPPES registry on March 6, 2007.

Where is Elizabeth Mercer located?

Elizabeth Mercer practices at 1215 W West Covina Pkwy, West Covina, CA 91790. The listed phone number is (626) 974-0770.

What is Elizabeth Mercer's specialty?

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

Is Elizabeth Mercer enrolled in Medicare?

Yes. Elizabeth Mercer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Elizabeth Mercer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Mercer reassigns Medicare benefits to Enki Health Services, Inc. (El Monte, 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 Elizabeth Mercer'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 Elizabeth Mercer was last updated on March 9, 2021. 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.