MRS. LETICIA GUILLEN LCSW
NPI 1194851642
Social Worker - Clinical in Livingston, CA

Q: What is Leticia Guillen's NPI number?

The NPI number for Leticia Guillen is 1194851642. It was assigned to this individual provider in the NPPES registry on February 26, 2007.

Q: What is Leticia Guillen's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Q: When was this NPI record last updated?

The NPPES record for Leticia Guillen was last updated on May 12, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 February 26, 2007PECOS Enrolled

1140 MAIN ST, LIVINGSTON, CA 95334(209) 394-7913(209) 394-3660 Get Directions Write a Review

NPPES record last updated: May 12, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Mrs. Leticia Guillen Lcsw NPPES

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

MRS. LETICIA GUILLEN LCSW (NPI 1194851642) is an individual clinical provider in Livingston, California, licensed in California (LCS29433) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194851642

Entity TypeIndividualFemale

Primary Taxonomy1041C0700X

Provider Legal NameMRS. LETICIA GUILLENCredential: LCSW

Location Address1140 MAIN STLivingston, CA 95334-1257

Mailing Address1140 Main StLivingston, CA 95334-1257 · (209) 394-7913 · Fax (209) 394-3660

Phone(209) 394-7913

Fax(209) 394-3660

Sole ProprietorNo

Enumeration DateFebruary 26, 2007

Last NPPES UpdateMay 12, 2014

✔ NPI 1194851642 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

License✔ Licensed in CA · LCS29433

Definition

A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.

1140 MAIN ST, Livingston, CA 95334

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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)

Mrs. Leticia Guillen Lcsw 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 Leticia Guillen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cyti Health PC

380 mi

Mental Health (Including Community Mental Health Center)

402 W BROADWAY STE 400
San Diego, CA 92101

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

NPI 1679172290 (866) 478-3978

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95334 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$0.00 typical visit price

range $58.87 – $176.60

Typical copayment $0.00 (range $14.71 – $44.15)

Most-billed visit code NA

Established Patient

$73.16 typical visit price

range $19.28 – $144.60

Typical copayment $18.29 (range $4.82 – $36.15)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MARIANA GUMM ASW

Social Worker