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KRISTEN FAYE WALKER M.D.
NPI 1104180470
Emergency Medicine in Round Rock, TX

Active since July 01, 2012PECOS EnrolledAccepts Medicare Assignment
3341 WINDING RIVER TRL, ROUND ROCK, TX 78681(325) 260-9002 Get Directions Write a Review

NPPES record last updated: July 1, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Kristen Faye Walker M.d. NPPES

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

KRISTEN FAYE WALKER M.D. (NPI 1104180470) is an individual emergency medicine provider in Round Rock, Texas, licensed in Texas (BP10042762) and active in the NPI registry since July 2012. She is enrolled in Medicare PECOS, is affiliated with Christus Good Shepherd Medical Center, and is a graduate of Texas A & M University System, Hsc, College Of Medicine (2012).

NPPES Registry Identity

NPI1104180470
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameKRISTEN FAYE WALKERCredential: M.D.
Location Address3341 WINDING RIVER TRLRound Rock, TX 78681-1136
Mailing Address3341 Winding River TrlRound Rock, TX 78681-1136 · (325) 260-9002
Phone(325) 260-9002
Sole ProprietorNo
Medical School CMSTexas A & M University System, Hsc, College Of MedicineGraduated 2012
Enumeration DateJuly 1, 2012
✔ NPI 1104180470 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in TX · BP10042762
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
3341 WINDING RIVER TRL, Round Rock, TX 78681
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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 and accepts Medicare assignment

Kristen Faye Walker M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2769703339
PECOS Enrollment IDI20150608001988
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 Reassignments

2

Medicare enrollment records show Kristen Walker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Acute Care Specialists
222 mi
Emergency Medicine
700 E MARSHALL AVE
Longview, TX 75601
  • Reassigned Medicare billing, Texas enrollment
  • 154 clinicians in this Medicare group
NPI 1740655273 (903) 315-2000
Northeast Texas Emergency Physicians, PLLC
222 mi
Emergency Medicine
700 E MARSHALL AVE
Longview, TX 75601
  • Reassigned Medicare billing, Texas enrollment
  • 272 clinicians in this Medicare group
NPI 1114607611 (903) 315-2000

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
278 services268 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
263 services243 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
75 services66 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
69 services69 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Christus Good Shepherd Medical Center

Acute Care Hospitals · Longview, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450032
Location700 E Marshall AveLongview, TX 75601 · Gregg County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78681 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.

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 Kristen Walker's NPI number?

The NPI number for Kristen Walker is 1104180470. It was assigned to this individual provider in the NPPES registry on July 1, 2012.

Where is Kristen Walker located?

Kristen Walker practices at 3341 Winding River Trl, Round Rock, TX 78681. The listed phone number is (325) 260-9002.

What is Kristen Walker's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Kristen Walker enrolled in Medicare?

Yes. Kristen Walker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Kristen Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kristen Walker reassigns Medicare benefits to 2 organizations: Acute Care Specialists (Longview, TX) and Northeast Texas Emergency Physicians, PLLC (Longview, TX). Each 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 Kristen Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kristen Walker accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Kristen 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.

Is Kristen Walker affiliated with any hospitals?

According to CMS data, Kristen Walker is affiliated with Christus Good Shepherd Medical Center.

When was this NPI record last updated?

The NPPES record for Kristen Walker was last updated on July 1, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.