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ANN CATHERINE SIZEMORE MFT
NPI 1588339261
Marriage & Family Therapist in Lafayette, CA

Active since August 13, 2021PECOS EnrolledAccepts Medicare Assignment
1109 N THOMPSON RD, LAFAYETTE, CA 94549(510) 913-0419 Get Directions Write a Review

NPPES record last updated: August 13, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Ann Catherine Sizemore Mft NPPES

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

ANN CATHERINE SIZEMORE MFT (NPI 1588339261) is an individual marriage & family therapist in Lafayette, California, licensed in California (MFC53958) and active in the NPI registry since August 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2009).

NPPES Registry Identity

NPI1588339261
Entity TypeIndividualFemale
Primary Taxonomy106H00000X
Provider Legal NameANN CATHERINE SIZEMORECredential: MFT
Location Address1109 N THOMPSON RDLafayette, CA 94549-3143
Mailing Address1109 N Thompson RdLafayette, CA 94549-3143 · (510) 913-0419
Phone(510) 913-0419
Sole ProprietorYes
Medical School CMSOtherGraduated 2009
Enumeration DateAugust 13, 2021
NPPES CertifiedAugust 13, 2021
✔ NPI 1588339261 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 · MFC53958
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.
1109 N THOMPSON RD, Lafayette, CA 94549
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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

Ann Catherine Sizemore Mft 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 ID8527525963
PECOS Enrollment IDI20260806000301
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 Ann Sizemore reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Blue Moon Senior Counseling Of California LLC
1,810 mi
Clinical
10204 BODE ST STE B
Plainfield, IL 60585
  • Reassigned Medicare billing, California enrollment
  • 117 clinicians in this Medicare group
NPI 1447678990 (855) 241-7160

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 Ann Sizemore's NPI number?

The NPI number for Ann Sizemore is 1588339261. It was assigned to this individual provider in the NPPES registry on August 13, 2021.

Where is Ann Sizemore located?

Ann Sizemore practices at 1109 N Thompson Rd, Lafayette, CA 94549. The listed phone number is (510) 913-0419.

What is Ann Sizemore's specialty?

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

Is Ann Sizemore enrolled in Medicare?

Yes. Ann Sizemore 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 Ann Sizemore's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ann Sizemore reassigns Medicare benefits to Blue Moon Senior Counseling Of California LLC (Plainfield, IL). 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 Ann Sizemore'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 Ann Sizemore was last updated on August 13, 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.