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MARISSA BORTENSTEIN, LCSW, PLLC
NPI 1386135192
Social Worker - Clinical in Austin, TX

Active since May 29, 2018
7701 N LAMAR BLVD STE 328, AUSTIN, TX 78752(512) 265-5220 Get Directions Write a Review

NPPES record last updated: December 8, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 8, 2021, Aug 30, 2019, Jul 5, 2019 (3 updates tracked since 2019).

About Marissa Bortenstein, Lcsw, Pllc NPPES

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

MARISSA BORTENSTEIN, LCSW, PLLC (NPI 1386135192) is a healthcare organization registered as a clinical in Austin, Texas and active in the NPI registry since May 2018. The organization lists Marissa Bortenstein, Owner, as its authorized official.

NPPES Registry Identity

NPI1386135192
Entity TypeOrganization
Primary Taxonomy1041C0700X
Legal Business NameMARISSA BORTENSTEIN, LCSW, PLLC
Location Address7701 N LAMAR BLVD STE 328Austin, TX 78752-1080
Mailing AddressPo Box 49431Austin, TX 78765-9431 · (512) 265-5220
Phone(512) 265-5220
Organization SubpartNo
Authorized OfficialMarissa BortensteinOwner · (512) 265-5220
Enumeration DateMay 29, 2018
Last NPPES UpdateDecember 8, 20213 updates tracked since enumeration
NPPES CertifiedDecember 8, 2021
✔ NPI 1386135192 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 · 59315
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.
7701 N LAMAR BLVD STE 328, Austin, TX 78752
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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 and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marissa Bortenstein, Lcsw, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Marissa Bortenstein, Lcsw, PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Marissa Bortenstein, LCSW
Clinical Social Worker
NPI 1215437504
7701 N LAMAR BLVD STE 313
Austin, TX 78752
(512) 265-5220
✔ PECOS✔ Accepts MedicareSame address

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 Marissa Bortenstein, Lcsw, PLLC's NPI number?

The NPI number for Marissa Bortenstein, Lcsw, PLLC is 1386135192. It was assigned to this organization in the NPPES registry on May 29, 2018.

Where is Marissa Bortenstein, Lcsw, PLLC located?

Marissa Bortenstein, Lcsw, PLLC is located at 7701 N Lamar Blvd Ste 328, Austin, TX 78752. The listed phone number is (512) 265-5220.

What is Marissa Bortenstein, Lcsw, PLLC's specialty?

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

Is Marissa Bortenstein, Lcsw, PLLC enrolled in Medicare?

Yes. Marissa Bortenstein, Lcsw, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Marissa Bortenstein, Lcsw, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Social Worker) reassigns their Medicare billing to Marissa Bortenstein, Lcsw, PLLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Marissa Bortenstein, Lcsw, PLLC was last updated on December 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.