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MARIANA DE LEON
NPI 1114872645
Social Worker - Clinical in Mcallen, TX

Active since March 02, 2026PECOS Enrolled
4400 PECAN BLVD STE 10, MCALLEN, TX 78501(956) 648-7950(956) 513-0662 Get Directions Write a Review

NPPES record last updated: March 2, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mariana De Leon NPPES

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

MARIANA DE LEON (NPI 1114872645) is an individual clinical provider in Mcallen, Texas, licensed in Texas (64730) and active in the NPI registry since March 2026. She is enrolled in Medicare PECOS and is a graduate of Univeristy Of Texas Rio Grande Valley Med School (2021).

NPPES Registry Identity

NPI1114872645
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARIANA DE LEON
Location Address4400 PECAN BLVD STE 10Mcallen, TX 78501-3199
Mailing Address4400 Pecan Blvd Ste 10Mcallen, TX 78501-3199 · (956) 648-7950 · Fax (956) 513-0662
Phone(956) 648-7950
Fax(956) 513-0662
Sole ProprietorNo
Medical School CMSUniveristy Of Texas Rio Grande Valley Med SchoolGraduated 2021
Enumeration DateMarch 2, 2026
NPPES CertifiedMarch 1, 2026
✔ NPI 1114872645 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 TX · 64730
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.
4400 PECAN BLVD STE 10, Mcallen, TX 78501
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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)

Mariana De Leon is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8527539253
PECOS Enrollment IDI20260603004180
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 Mariana De Leon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Hernandez Counseling & Associates PLLC
Same address
Professional
4400 PECAN BLVD STE 10
Mcallen, TX 78501
  • Reassigned Medicare billing, Texas enrollment
  • 4 clinicians in this Medicare group
NPI 1033926084 (956) 648-7950

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 78501 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 $54.84 – $166.88
Typical copayment $0.00 (range $13.71 – $41.72)
Most-billed visit code NA
Established Patient
$68.55 typical visit price
range $17.52 – $136.11
Typical copayment $17.13 (range $4.38 – $34.02)
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 3

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

HERNANDEZ COUNSELING & ASSOCIATES PLLC
Counselor (Professional)
4400 PECAN BLVD STE 10
MCALLEN, TX 78501
Hidalgo County (956) 648-7950
MRS. ANDREA VELA MORENO M.S., LPC
Counselor (Professional)
4400 PECAN BLVD STE 10
MCALLEN, TX 78501
Hidalgo County (956) 648-7950
SILVIA N HERNANDEZ MS, LPC
Counselor (Professional)
4400 PECAN BLVD STE 10
MCALLEN, TX 78501
Hidalgo County (956) 648-7950

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 Mariana De Leon's NPI number?

The NPI number for Mariana De Leon is 1114872645. It was assigned to this individual provider in the NPPES registry on March 2, 2026.

Where is Mariana De Leon located?

Mariana De Leon practices at 4400 Pecan Blvd Ste 10, Mcallen, TX 78501. The listed phone number is (956) 648-7950.

What is Mariana De Leon's specialty?

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

Is Mariana De Leon enrolled in Medicare?

Yes. Mariana De Leon is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mariana De Leon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mariana De Leon reassigns Medicare benefits to Hernandez Counseling & Associates PLLC (Mcallen, TX). 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 Mariana De Leon'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 Mariana De Leon was last updated on March 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.