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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

STEVEN DEREK LEIGHTON M.A.
NPI 1609088152
Marriage & Family Therapist in San Marcos, TX

Active since May 05, 2007Opted out of Medicare · through Sep 11, 2026
125 WAVING MUHLY DR, SAN MARCOS, TX 78666(512) 658-2960 Get Directions Write a Review

NPPES record last updated: July 21, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 21, 2026, Sep 14, 2024, Jun 10, 2023 (3 updates tracked since 2023).

About Steven Derek Leighton M.a. NPPES

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

STEVEN DEREK LEIGHTON M.A. (NPI 1609088152) is an individual marriage & family therapist in San Marcos, Texas, licensed in Texas (200969) and active in the NPI registry since May 2007. He has opted out of Medicare through September 11, 2026 and maintains a secondary practice location in West Lake Hills.

NPPES Registry Identity

NPI1609088152
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameSTEVEN DEREK LEIGHTONCredential: M.A.
Location Address125 WAVING MUHLY DRSan Marcos, TX 78666-4845
Mailing Address125 Waving Muhly DrSan Marcos, TX 78666-4845 · (512) 658-2960
Phone(512) 658-2960
Sole ProprietorYes
Enumeration DateMay 5, 2007
Last NPPES UpdateJuly 21, 20263 updates tracked since enumeration
NPPES CertifiedJuly 21, 2026
✔ NPI 1609088152 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 TX · 200969
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.
125 WAVING MUHLY DR, San Marcos, TX 78666
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Other Names 1

Other Name (5)Derek Leighton M.a.

Secondary Practice Location 1

Location 13534 Bee Cave Rd, #114West Lake Hills, TX 78746-5468 · Phone (512) 658-2960

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Steven Derek Leighton M.a. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from September 11, 2024 through September 11, 2026.

Opt-Out Effective DateSeptember 11, 2024
Opt-Out In Effect ThroughSeptember 11, 2026Opt-out affidavits renew automatically every two years unless cancelled

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 Steven Leighton's NPI number?

The NPI number for Steven Leighton is 1609088152. It was assigned to this individual provider in the NPPES registry on May 5, 2007. The provider is also known as Derek Leighton M.A..

Where is Steven Leighton located?

Steven Leighton practices at 125 Waving Muhly Dr, San Marcos, TX 78666. The listed phone number is (512) 658-2960.

What is Steven Leighton's specialty?

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

Is Steven Leighton enrolled in Medicare?

No. Steven Leighton has opted out of Medicare through September 11, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Steven Leighton was last updated on July 21, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.