LEGACY PAIN ASSOCIATES, P.A.
NPI 1659485894
Pain Medicine - Pain Medicine in Shenandoah, TX

Q: What is Legacy Pain Associates, P.A.'s NPI number?

The NPI number for Legacy Pain Associates, P.A. is 1659485894. It was assigned to this organization in the NPPES registry on August 17, 2006.

Q: What is Legacy Pain Associates, P.A.'s specialty?

The primary specialty registered for this NPI is Pain Medicine with taxonomy code 208VP0000X.

Active since August 17, 2006CLIA 45D2285494 · Accreditation

9201 PINECROFT DR STE 200, SHENANDOAH, TX 77380(832) 953-2280(832) 953-2829 Get Directions Write a Review

NPPES record last updated: January 14, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 1, 2025, Jul 21, 2022, Mar 17, 2018 and 2 more (5 updates tracked since 2017).

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About Legacy Pain Associates, P.a. NPPES

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

LEGACY PAIN ASSOCIATES, P.A. (NPI 1659485894) is a healthcare organization registered as a pain medicine in Shenandoah, Texas and active in the NPI registry since August 2006. The organization holds an CLIA Accreditation certificate valid through June 3, 2028, maintains a secondary practice location in Houston, and lists Clayton Mark Barhorst, Owner, Medical Director, as its authorized official.

NPPES Registry Identity

NPI1659485894

Entity TypeOrganization

Primary Taxonomy208VP0000X

Legal Business NameLEGACY PAIN ASSOCIATES, P.A.

Location Address9201 PINECROFT DR STE 200Shenandoah, TX 77380-3889

Mailing AddressPo Box 679113Dallas, TX 75267-8205 · (832) 953-2280 · Fax (832) 953-2829

Phone(832) 953-2280

Fax(832) 953-2829

Organization SubpartNo

Authorized OfficialClayton Mark BarhorstOwner, Medical Director · (832) 953-2280

Enumeration DateAugust 17, 2006

Last NPPES UpdateJanuary 14, 20255 updates tracked since enumeration

NPPES CertifiedJanuary 14, 2025

✔ NPI 1659485894 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPain Medicine · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code208VP0000X

Definition

Pain Medicine is a primary medical specialty based on a distinct body of knowledge and a well-defined scope of clinical practice that is founded on science, research and education. It is concerned with the study of pain, the prevention of pain, and the evaluation, treatment, and rehabilitation of persons in pain. A comprehensive evaluation incorporates the physical, psychological, cognitive and socio-cultural contributions to pain. The treatment protocol may include pharmacological, invasive, behavioral, cognitive, rehabilitative and complementary strategies provided in a concurrent focused and patient specific manner. The pain medicine physician often serves the patient as a frontline physician regarding their pain, but also may serve as a consultant to other physicians, direct an interdisciplinary/multidisciplinary treatment team, conduct research, or advocate for the patient's pain care with public and private agencies. The Pain Medicine physician may work in variety of settings including office, clinic, hospital, university, or governmental/public agencies.

9201 PINECROFT DR STE 200, Shenandoah, TX 77380

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Secondary Practice Location 1

Location 19920 Cypresswood DrHouston, TX 77070-3400 · Phone (832) 953-2280 · Fax (832) 953-2829

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE 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)

Legacy Pain Associates, P.a. 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 Legacy Pain Associates, P.A., which bills Medicare for the services this clinician delivers.

Clinician (1)

Clayton Barhorst, M.D.

Interventional Pain Management

NPI 1073873386

13603 MICHEL RD
Tomball, TX 77375

(281) 351-7261

✔ PECOS✔ Accepts Medicare12 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Accreditation 45D2285494

Legacy Pain Associates, PA · Shenandoah, TX

Active · expires Jun 3, 2028

CLIA Number45D2285494

Laboratory TypePhysician Office

Certificate Effective DateJune 4, 2026

Certificate Expiration DateJune 3, 2028

Laboratory DirectorDr. Clayton Barhorst

Laboratory Phone(832) 953-2280

Laboratory LocationLegacy Pain Associates, PA9201 Pinecroft Dr Suite 200, Shenandoah, TX 77380

CLIA data matches this NPI record on: Address Name Phone

This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

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 Legacy Pain Associates, P.A.'s NPI number?

The NPI number for Legacy Pain Associates, P.A. is 1659485894. It was assigned to this organization in the NPPES registry on August 17, 2006.

Where is Legacy Pain Associates, P.A. located?

Legacy Pain Associates, P.A. is located at 9201 Pinecroft Dr Ste 200, Shenandoah, TX 77380. The listed phone number is (832) 953-2280.

What is Legacy Pain Associates, P.A.'s specialty?

The primary specialty registered for this NPI is Pain Medicine with taxonomy code 208VP0000X.

Is Legacy Pain Associates, P.A. enrolled in Medicare?

Yes. Legacy Pain Associates, P.A. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Legacy Pain Associates, P.A.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Interventional Pain Management) reassigns their Medicare billing to Legacy Pain Associates, P.A.. 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.

Does Legacy Pain Associates, P.A. hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 45D2285494) is associated with this NPI, valid through June 3, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Legacy Pain Associates, P.A. was last updated on January 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.