Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ASHLEY GRAY JOHNSON
NPI 1619620614
Nurse Practitioner in Mckinney, TX

Active since January 31, 2022PECOS EnrolledAccepts Medicare Assignment
4510 MEDICAL CENTER DR STE 210, MCKINNEY, TX 75069(214) 358-2300(214) 579-6995 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2026, Jan 5, 2024, Jan 31, 2022 (3 updates tracked since 2022).

About Ashley Gray Johnson NPPES

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

ASHLEY GRAY JOHNSON (NPI 1619620614) is an individual nurse practitioner in Mckinney, Texas, licensed in Texas (1057778) and active in the NPI registry since January 2022. She is enrolled in Medicare PECOS, maintains a secondary practice location in Mckinney, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1619620614
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameASHLEY GRAY JOHNSON
Location Address4510 MEDICAL CENTER DR STE 210Mckinney, TX 75069-1602
Mailing Address1505 Lbj Fwy Ste 700Dallas, TX 75234-6065 · (214) 358-2300 · Fax (214) 366-6159
Fax(214) 579-6995
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateJanuary 31, 2022
Last NPPES UpdateSeptember 29, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 29, 2026
✔ NPI 1619620614 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in TX · 1057778
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 1057778 (TX)
4510 MEDICAL CENTER DR STE 210, Mckinney, TX 75069

Other Names 1

Former Name (1)Ashley Gray Mackey Np

Secondary Practice Location 1

Location 1181 N Ridge Rd Ste 200McKinney, TX 75071-6962 · Phone (214) 358-2300 · Fax (972) 548-3967

Other Identifiers 2

Other1057778TX · License
Other872927TX · Rn License

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

Ashley Gray Johnson 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 ID8325431729
PECOS Enrollment IDI20220208000611
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 Ashley Johnson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Nephrology
1505 LBJ FWY STE 700
Dallas, TX 75234
  • Reassigned Medicare billing, Texas enrollment
  • 183 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 2

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
140 services121 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75069 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.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
3 suppliers11 claims1,470 services$0.28 avg. paid by Medicare
Prednisone, immediate release or delayed release, oral, 1 mg J7512
Treatment-Treatment - Miscellaneous · category RX029N
3 suppliers12 claims2,325 services$0.01 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
5 suppliers14 claims14 services$18.83 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
4 suppliers17 claims21 services$12.55 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 4

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

Internal Medicine (Nephrology)
4510 MEDICAL CENTER DR STE 210
MCKINNEY, TX 75069
Internal Medicine (Nephrology)
4510 MEDICAL CENTER DR STE 210
MCKINNEY, TX 75069
Internal Medicine (Nephrology)
4510 MEDICAL CENTER DR STE 210
MCKINNEY, TX 75069
Internal Medicine (Nephrology)
4510 MEDICAL CENTER DR STE 210
MCKINNEY, TX 75069

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 Ashley Johnson's NPI number?

The NPI number for Ashley Johnson is 1619620614. It was assigned to this individual provider in the NPPES registry on January 31, 2022. The provider is also known as Ashley Gray Mackey Np.

Where is Ashley Johnson located?

Ashley Johnson practices at 4510 Medical Center Dr Ste 210, Mckinney, TX 75069. The listed phone number is (214) 358-2300.

What is Ashley Johnson's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Ashley Johnson enrolled in Medicare?

Yes. Ashley Johnson 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 organization bills Medicare for Ashley Johnson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ashley Johnson reassigns Medicare benefits to Dallas Nephrology Associates (Dallas, 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 Ashley Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ashley Johnson 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 Ashley Johnson 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 Ashley Johnson was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 days 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.