WILLIAMSON PAIN INSTITUTE PLLC
NPI 1528599370
Anesthesiology - Pain Medicine in Cedar Park, TX

Q: What is Williamson Pain Institute PLLC's NPI number?

The NPI number for Williamson Pain Institute PLLC is 1528599370. It was assigned to this organization in the NPPES registry on March 23, 2017.

Q: What is Williamson Pain Institute PLLC's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Active since March 23, 2017CLIA Certified · 2 labs

901 CYPRESS CREEK RD., BLDG. 1, SUITE 100, CEDAR PARK, TX 78613(512) 244-4383(512) 532-6470 Get Directions Write a Review

NPPES record last updated: November 1, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 1, 2018, Mar 23, 2017 (2 updates tracked since 2017).

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About Williamson Pain Institute Pllc NPPES

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

WILLIAMSON PAIN INSTITUTE PLLC (NPI 1528599370) is a healthcare organization registered as a pain medicine in Cedar Park, Texas and active in the NPI registry since March 2017. The organization holds 2 active CLIA laboratory certificates and lists Asad Nawaz, President, as its authorized official.

NPPES Registry Identity

NPI1528599370

Entity TypeOrganization

Primary Taxonomy207LP2900X

Legal Business NameWILLIAMSON PAIN INSTITUTE PLLC

Location Address901 CYPRESS CREEK RD., BLDG. 1, SUITE 100Cedar Park, TX 78613

Mailing Address901 Cypress Creek Rd., Bldg. 1, Suite 100Cedar Park, TX 78613 · (512) 244-4383 · Fax (512) 532-6470

Phone(512) 244-4383

Fax(512) 532-6470

Organization SubpartNo

Authorized OfficialAsad NawazPresident · (512) 244-4383

Enumeration DateMarch 23, 2017

Last NPPES UpdateNovember 1, 20182 updates tracked since enumeration

✔ NPI 1528599370 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207LP2900X

Definition

An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

901 CYPRESS CREEK RD., Cedar Park, TX 78613

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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

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 and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Williamson Pain Institute 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 Williamson Pain Institute PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Asad Nawaz, MD

Interventional Pain Management

NPI 1629303490

901 CYPRESS CREEK RD. BLDG. 1, SUITE 100
Cedar Park, TX 78613

(512) 244-4383

✔ 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.

CLIA Laboratory Certificates CMS CLIA 2

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 Waiver 45D2139959

Williamson Pain Institute · Cedar Park, TX

Active · expires Nov 12, 2027

CLIA Number45D2139959

Laboratory TypePhysician Office

Certificate Effective DateNovember 13, 2025

Certificate Expiration DateNovember 12, 2027

Laboratory DirectorAsad Nawaz

Laboratory Phone(512) 244-4383

Laboratory LocationWilliamson Pain Institute1603 Medical Parkway Bldg 3 Suite 330, Cedar Park, TX 78613

CLIA data matches this NPI record on: Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 45D2140487

Williams Pain Institute · Hutto, TX

Active · expires Nov 20, 2027

CLIA Number45D2140487

Laboratory TypePhysician Office

Certificate Effective DateNovember 21, 2025

Certificate Expiration DateNovember 20, 2027

Laboratory DirectorAsad Nawaz

Laboratory Phone(512) 244-4383

Laboratory LocationWilliams Pain Institute351 Exchange Blvd Suite 130, Hutto, TX 78634

CLIA data matches this NPI record on: Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Williamson Pain Institute PLLC's NPI number?

The NPI number for Williamson Pain Institute PLLC is 1528599370. It was assigned to this organization in the NPPES registry on March 23, 2017.

Where is Williamson Pain Institute PLLC located?

Williamson Pain Institute PLLC is located at 901 Cypress Creek Rd. Bldg. 1, Suite 100, Cedar Park, TX 78613. The listed phone number is (512) 244-4383.

What is Williamson Pain Institute PLLC's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Is Williamson Pain Institute PLLC enrolled in Medicare?

Yes. Williamson Pain Institute PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Williamson Pain Institute PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Interventional Pain Management) reassigns their Medicare billing to Williamson Pain Institute 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.

Does Williamson Pain Institute PLLC hold CLIA laboratory certificates?

Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does Williamson Pain Institute PLLC accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 3 other insurers list Williamson Pain Institute PLLC 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 Williamson Pain Institute PLLC was last updated on November 1, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.