DR. MARY ELIZABETH DE FERREIRE PH.D.
NPI 1306021555
Psychologist - Clinical in Mcallen, TX

Q: What is Mary De Ferreire's NPI number?

The NPI number for Mary De Ferreire is 1306021555. It was assigned to this individual provider in the NPPES registry on January 7, 2008.

Q: What is Mary De Ferreire's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Mary De Ferreire was last updated on March 22, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 January 07, 2008PECOS Enrolled

507 W. NOLANA AVE., MCALLEN, TX 78504(956) 688-6229(956) 688-6218 Get Directions Write a Review

NPPES record last updated: March 22, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Mary Elizabeth De Ferreire Ph.d. NPPES

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

DR. MARY ELIZABETH DE FERREIRE PH.D. (NPI 1306021555) is an individual clinical provider in Mcallen, Texas, licensed in Texas (25118) and active in the NPI registry since January 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306021555

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameDR. MARY ELIZABETH DE FERREIRECredential: PH.D.

Location Address507 W. NOLANA AVE.Mcallen, TX 78504-3029

Mailing Address507 W. Nolana Ave.Mcallen, TX 78504-3029 · (956) 688-6229 · Fax (956) 688-6218

Phone(956) 688-6229

Fax(956) 688-6218

Sole ProprietorNo

Enumeration DateJanuary 7, 2008

Last NPPES UpdateMarch 22, 2012

✔ NPI 1306021555 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in TX · 25118

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

507 W. NOLANA AVE., Mcallen, TX 78504

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Other Identifiers 2

Medicare PINP000T94LTX

MedicaidP000T94L2TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mary Elizabeth De Ferreire Ph.d. 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 Mary De Ferreire reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

International And Multicultural Psychological Services, P. C.

Same address

Clinical

507 W. NOLANA AVE.
Mcallen, TX 78504

Reassigned Medicare billing, Texas enrollment
2 clinicians in this Medicare group

NPI 1366517914 (956) 688-6229

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 78504 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

$166.88 typical visit price

range $54.84 – $166.88

Typical copayment $41.72 (range $13.71 – $41.72)

Most-billed visit code 99205

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

Most-billed visit code 99214

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 2

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

MISS MARY LOU REYNA LPC

Counselor (Professional)

507 W. NOLANA AVE.
MCALLEN, TX 78504

Hidalgo County (956) 688-6229

INTERNATIONAL AND MULTICULTURAL PSYCHOLOGICAL SERVICES, P. C.

Psychologist (Clinical)

507 W. NOLANA AVE.
MCALLEN, TX 78504

Hidalgo County (956) 688-6229

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 Mary De Ferreire's NPI number?

The NPI number for Mary De Ferreire is 1306021555. It was assigned to this individual provider in the NPPES registry on January 7, 2008.

Where is Mary De Ferreire located?

Mary De Ferreire practices at 507 W. Nolana Ave., Mcallen, TX 78504. The listed phone number is (956) 688-6229.

What is Mary De Ferreire's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Mary De Ferreire enrolled in Medicare?

Yes. Mary De Ferreire is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary De Ferreire's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary De Ferreire reassigns Medicare benefits to International And Multicultural Psychological Services, P. C. (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 Mary De Ferreire's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary De Ferreire accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 3 other insurers list Mary De Ferreire as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mary De Ferreire was last updated on March 22, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.