MARQUITA WALKER PMHNP-BC, FNP-C
NPI 1811360662
Nurse Practitioner - Psychiatric/Mental Health in Greenville, TX
About Marquita Walker Pmhnp-bc, Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARQUITA WALKER PMHNP-BC, FNP-C (NPI 1811360662) is an individual psychiatric/mental health provider in Greenville, Texas, licensed in Texas (AP131035) and active in the NPI registry since November 2015. She is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
Accepted 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
Marquita Walker Pmhnp-bc, Fnp-c 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.
Medicare Billing Reassignments
4Medicare enrollment records show Marquita Walker reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Plano, TX 75024
- Reassigned Medicare billing, Texas enrollment
- 18 clinicians in this Medicare group
Round Rock, TX 78664
- Reassigned Medicare billing, Texas enrollment
- 362 clinicians in this Medicare group
Round Rock, TX 78664
- Reassigned Medicare billing, Texas enrollment
- 493 clinicians in this Medicare group
Spring, TX 77373
- Reassigned Medicare billing, Texas enrollment
- 238 clinicians in this Medicare group
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 3
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 75401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREENVILLE, TX 75401
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 Marquita Walker's NPI number?
The NPI number for Marquita Walker is 1811360662. It was assigned to this individual provider in the NPPES registry on November 2, 2015.
Where is Marquita Walker located?
Marquita Walker practices at 4501 Joe Ramsey Blvd E Ste 260, Greenville, TX 75401. The listed phone number is (972) 232-7474.
What is Marquita Walker's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Marquita Walker enrolled in Medicare?
Yes. Marquita 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 Marquita Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marquita Walker reassigns Medicare benefits to 4 organizations: Satish Narayan MD PA (Plano, TX), Minuteclinic Telehealth Services Of Texas Association (Round Rock, TX), Minuteclinic Diagnostic Of Texas PLLC (Round Rock, TX) and Minuteclinic Primary Care Texas PLLC (Spring, 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 Marquita Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marquita 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 5 other insurers list Marquita 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 Marquita Walker was last updated on April 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Marquita Walker, PMHNP-BC, FNP-C · NPI 1811360662
Psychiatric/Mental Health physician in Greenville, Texas. Individual provider, active in the CMS NPPES registry since November 2, 2015.
## Identity
- **NPI:** 1811360662 (Entity type: Individual)
- **Enumerated:** November 2, 2015
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** AP131035 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4501 JOE RAMSEY BLVD E STE 260, Greenville, TX 75401-7835
- **Phone:** (972) 232-7474 · **Fax:** (972) 232-7401
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Satish Narayan MD PA (NPI 1659538775, Plano, TX); Minuteclinic Telehealth Services Of Texas Association (NPI 1922564301, Round Rock, TX); Minuteclinic Diagnostic Of Texas PLLC (NPI 1609076330, Round Rock, TX); Minuteclinic Primary Care Texas PLLC (NPI 1710794292, Spring, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** April 16, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1811360662) · Data from the CMS NPPES public registry.