Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CYNTHIA LEE LANCASTER
NPI 1043428378
Marriage & Family Therapist in Castro Valley, CA

Active since May 18, 2007PECOS Enrolled
15200 FOOTHILL BLVD, CASTRO VALLEY, CA 94578(510) 352-9690 Get Directions Write a Review

NPPES record last updated: September 28, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Cynthia Lee Lancaster NPPES

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

CYNTHIA LEE LANCASTER (NPI 1043428378) is an individual marriage & family therapist in Castro Valley, California, licensed in California (50200) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1043428378
Entity TypeIndividualFemale
Primary Taxonomy106H00000X
Provider Legal NameCYNTHIA LEE LANCASTER
Location Address15200 FOOTHILL BLVDCastro Valley, CA 94578-1013
Mailing Address3345 Concord BlvdConcord, CA 94519-2354 · (510) 427-5603 · Fax (510) 690-0703
Sole ProprietorNo
Enumeration DateMay 18, 2007
Last NPPES UpdateSeptember 28, 2026
NPPES CertifiedSeptember 28, 2026
✔ NPI 1043428378 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in CA · 50200
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 · License 1602 (CA)
15200 FOOTHILL BLVD, Castro Valley, CA 94578

Other Names 1

Other Name (5)Cynthia Lee Lancaster

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Cynthia Lee Lancaster 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 Cynthia Lancaster reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Addiction Medicine
4633 OLD IRONSIDES DR STE 304
Santa Clara, CA 95054
  • Reassigned Medicare billing, California enrollment
  • 1,607 clinicians in this Medicare group

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.

Licensed Vocational Nurse
15200 FOOTHILL BLVD
SAN LEANDRO, CA 94578
Day Training/Habilitation Specialist
15200 FOOTHILL BLVD
CASTRO VALLEY, CA 94578
Day Training/Habilitation Specialist
15200 FOOTHILL BLVD
CASTRO VALLEY, CA 94578
Community Based Residential Treatment Facility, Mental Illness
15200 FOOTHILL BLVD
SAN LEANDRO, CA 94578
Social Worker (Clinical)
15200 FOOTHILL BLVD
SAN LEANDRO, CA 94578
Student in an Organized Health Care Education/Training Program
15200 FOOTHILL BLVD
CASTRO VALLEY, CA 94578
Community/Behavioral Health
15200 FOOTHILL BLVD
SAN LEANDRO, CA 94578
Licensed Vocational Nurse
15200 FOOTHILL BLVD
SAN LEANDRO, CA 94578

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 Cynthia Lancaster's NPI number?

The NPI number for Cynthia Lancaster is 1043428378. It was assigned to this individual provider in the NPPES registry on May 18, 2007. The provider is also known as Cynthia Lee Lancaster.

Where is Cynthia Lancaster located?

Cynthia Lancaster practices at 15200 Foothill Blvd, Castro Valley, CA 94578. The listed phone number is (510) 352-9690.

What is Cynthia Lancaster's specialty?

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

Is Cynthia Lancaster enrolled in Medicare?

Yes. Cynthia Lancaster is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Cynthia Lancaster's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Lancaster reassigns Medicare benefits to Sud Specialty Group - Ca (Santa Clara, 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 Cynthia Lancaster'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 Cynthia Lancaster was last updated on September 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 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.