MS. KAREN BROWN MACKENZIE MFT
NPI 1861612996
Marriage & Family Therapist in Rancho Cucamonga, CA

Q: What is Karen Mackenzie's NPI number?

The NPI number for Karen Mackenzie is 1861612996. It was assigned to this individual provider in the NPPES registry on April 30, 2007.

Q: What is Karen Mackenzie'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 Karen Mackenzie was last updated on August 31, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since April 30, 2007PECOS Enrolled

8253 WHITE OAK AVENUE, RANCHO CUCAMONGA, CA 91730(909) 987-1997(909) 987-0993 Get Directions Write a Review

NPPES record last updated: August 31, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Ms. Karen Brown Mackenzie Mft NPPES

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

MS. KAREN BROWN MACKENZIE MFT (NPI 1861612996) is an individual marriage & family therapist in Rancho Cucamonga, California, licensed in California (MFC25656) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1861612996

Entity TypeIndividualFemale

Primary Taxonomy106H00000X

Provider Legal NameMS. KAREN BROWN MACKENZIECredential: MFT

Location Address8253 WHITE OAK AVENUERancho Cucamonga, CA 91730

Mailing Address2145 Woodbriar CourtFullerton, CA 92831 · (714) 441-0998 · Fax (909) 987-0993

Phone(909) 987-1997

Fax(909) 987-0993

Sole ProprietorNo

Enumeration DateApril 30, 2007

Last NPPES UpdateAugust 31, 2018

✔ NPI 1861612996 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 · MFC25656

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.

8253 WHITE OAK AVENUE, Rancho Cucamonga, CA 91730

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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. Karen Brown Mackenzie 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 Karen Mackenzie reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Foothills Psychological Services, Inc.

5.8 mi

Psychologist

954 W FOOTHILL BLVD STE A
Upland, CA 91786

Reassigned Medicare billing, California enrollment
82 clinicians in this Medicare group

NPI 1336121888 (909) 946-4222

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

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 Karen Mackenzie's NPI number?

The NPI number for Karen Mackenzie is 1861612996. It was assigned to this individual provider in the NPPES registry on April 30, 2007.

Where is Karen Mackenzie located?

Karen Mackenzie practices at 8253 White Oak Avenue, Rancho Cucamonga, CA 91730. The listed phone number is (909) 987-1997.

What is Karen Mackenzie's specialty?

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

Is Karen Mackenzie enrolled in Medicare?

Yes. Karen Mackenzie is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Karen Mackenzie's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Mackenzie reassigns Medicare benefits to Foothills Psychological Services, Inc. (Upland, 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 Karen Mackenzie'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 Karen Mackenzie was last updated on August 31, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.