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MERCEDES KATHERINE DAY RN, MSN, FNP-C
NPI 1366727083
Nurse Practitioner - Pediatrics in Fort Worth, TX

Active since October 13, 2011PECOS Enrolled
9840 N BEACH ST, FORT WORTH, TX 76244(817) 431-3898(817) 431-3909 Get Directions Write a Review

NPPES record last updated: April 26, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 26, 2021, Apr 9, 2021, Aug 19, 2016 (3 updates tracked since 2016).

About Mercedes Katherine Day Rn, Msn, Fnp-c NPPES

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

MERCEDES KATHERINE DAY RN, MSN, FNP-C (NPI 1366727083) is an individual pediatrics provider in Fort Worth, Texas, licensed in Texas (AP120975) and active in the NPI registry since October 2011. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1366727083
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameMERCEDES KATHERINE DAYCredential: RN, MSN, FNP-C
Location Address9840 N BEACH STFort Worth, TX 76244-6184
Mailing AddressPo Box 733784Dallas, TX 75373-3784 · (682) 885-1855 · Fax (682) 882-1396
Phone(817) 431-3898
Fax(817) 431-3909
Sole ProprietorNo
Enumeration DateOctober 13, 2011
Last NPPES UpdateApril 26, 20213 updates tracked since enumeration
NPPES CertifiedApril 26, 2021
✔ NPI 1366727083 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in TX · AP120975
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 730516 (TX)
9840 N BEACH ST, Fort Worth, TX 76244
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mercedes Katherine Day Rn, Msn, Fnp-c 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 Reassignments

2

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

Cook Children's Physician Network
13 mi
Pediatrics
801 7TH AVE
Fort Worth, TX 76104
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Cook Childrens Physician Network
  • 1,186 clinicians in this Medicare group
NPI 1083472062 (682) 885-6483
Pediatric Urgent Care PA
218 mi
Urgent Care
1640 LAKE WOODLANDS DR, SUITE E
The Woodlands, TX 77380
  • Reassigned Medicare billing, Texas enrollment
  • 56 clinicians in this Medicare group
NPI 1598059776 (214) 729-5600

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 76244 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
$87.20 typical visit price
range $56.47 – $171.07
Typical copayment $21.80 (range $14.11 – $42.76)
Most-billed visit code 99203
Established Patient
$99.68 typical visit price
range $18.18 – $139.68
Typical copayment $24.92 (range $4.54 – $34.92)
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 11

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

MRS. LARA LAINE LAWRENCE RN, MNSC, APRN, CPNP
Physician Assistant
9840 N BEACH ST
FORT WORTH, TX 76244
Tarrant County (817) 431-3898
PARNIAN CHANGIZZADEH M.D
Pediatrics
9840 N BEACH ST
FORT WORTH, TX 76244
Tarrant County (817) 431-3898
STACI E LOPEZ-VERGARA CPNP
Nurse Practitioner (Pediatrics)
9840 N BEACH ST
FORT WORTH, TX 76244
Tarrant County (817) 431-3898
AMY C PHILIPP DO
Pediatrics
9840 N BEACH ST
FORT WORTH, TX 76244
Tarrant County (817) 431-3898
NICOLE T WINERITER M.D.
Pediatrics
9840 N BEACH ST
FORT WORTH, TX 76244
Tarrant County (817) 431-3898
WILLIAM K DAVIS MD
Pediatrics
9840 N BEACH ST
FORT WORTH, TX 76244
Tarrant County (817) 431-3898
PHUONG THAO THI LE MSN, APRN, FNP-C
Nurse Practitioner (Family)
9840 N BEACH ST
FORT WORTH, TX 76244
Tarrant County (817) 431-3898
DR. SUZANNE E HOOD D.O.
Pediatrics
9840 N BEACH ST
FORT WORTH, TX 76244
Tarrant County (817) 431-3898

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 Mercedes Day's NPI number?

The NPI number for Mercedes Day is 1366727083. It was assigned to this individual provider in the NPPES registry on October 13, 2011.

Where is Mercedes Day located?

Mercedes Day practices at 9840 N Beach St, Fort Worth, TX 76244. The listed phone number is (817) 431-3898.

What is Mercedes Day's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Mercedes Day enrolled in Medicare?

Yes. Mercedes Day is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mercedes Day's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mercedes Day reassigns Medicare benefits to 2 organizations: Cook Children's Physician Network (Fort Worth, TX) and Pediatric Urgent Care PA (The Woodlands, 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 Mercedes Day's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mercedes Day accept?

Health plans from Blue Cross and Blue Shield of Texas list Mercedes Day 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 Mercedes Day was last updated on April 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.