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DR. SHAWN JEFFREY WALKER JR. MD
NPI 1184185456
Pediatrics in San Marcos, TX

Active since March 28, 2019PECOS Enrolled
1941 S INTERSTATE 35 STE 101, SAN MARCOS, TX 78666(512) 268-8900 Get Directions Write a Review

NPPES record last updated: September 8, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 8, 2025, Aug 11, 2025, Aug 9, 2023 and 3 more (6 updates tracked since 2022).

About Dr. Shawn Jeffrey Walker Jr. Md NPPES

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

DR. SHAWN JEFFREY WALKER JR. MD (NPI 1184185456) is an individual pediatrics provider in San Marcos, Texas, licensed in Texas (T6747) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184185456
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. SHAWN JEFFREY WALKER JR.Credential: MD
Location Address1941 S INTERSTATE 35 STE 101San Marcos, TX 78666-6169
Mailing Address244 Fm 306, Ste 120 #341New Braunfels, TX 78130-5487 · (806) 336-2705
Phone(512) 268-8900
Sole ProprietorYes
Enumeration DateMarch 28, 2019
Last NPPES UpdateSeptember 8, 20256 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2025
✔ NPI 1184185456 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in TX · T6747
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
1941 S INTERSTATE 35 STE 101, San Marcos, TX 78666
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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. Shawn Jeffrey Walker Jr. Md 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 Shawn Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Barrio Comprehensive Family Health Care Center, Inc.
Same address
Federally Qualified Health Center (FQHC)
1941 S INTERSTATE 35 STE 101
San Marcos, TX 78666
  • Reassigned Medicare billing, Texas enrollment
  • 268 clinicians in this Medicare group
NPI 1386882231 (512) 392-1718

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 78666 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
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
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 3

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

RICHARD SCOTT ARTHUR
Nurse Practitioner (Family)
1941 S INTERSTATE 35 STE 101
SAN MARCOS, TX 78666
Hays County (210) 233-7000
DR. GUSTAVO BOETA-LOPEZ MD
Family Medicine
1941 S INTERSTATE 35 STE 101
SAN MARCOS, TX 78666
Hays County (210) 233-7000
BARRIO COMPREHENSIVE FAMILY HEALTH CARE CENTER, INC.
Clinic/Center (Federally Qualified Health Center (FQHC))
1941 S INTERSTATE 35 STE 101
SAN MARCOS, TX 78666
Hays County (512) 392-1718

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 Shawn Walker's NPI number?

The NPI number for Shawn Walker is 1184185456. It was assigned to this individual provider in the NPPES registry on March 28, 2019.

Where is Shawn Walker located?

Shawn Walker practices at 1941 S Interstate 35 Ste 101, San Marcos, TX 78666. The listed phone number is (512) 268-8900.

What is Shawn Walker's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Shawn Walker enrolled in Medicare?

Yes. Shawn Walker is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Shawn Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Shawn Walker reassigns Medicare benefits to Barrio Comprehensive Family Health Care Center, Inc. (San Marcos, 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 Shawn Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Shawn Walker 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 5 other insurers list Shawn Walker 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 Shawn Walker was last updated on September 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.