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PATRICK EMERSON DAY MD
NPI 1003376138
Pediatrics - Pediatric Cardiology in Austin, TX

Active since March 24, 2019PECOS Enrolled
4900 MUELLER BLVD, AUSTIN, TX 78723(512) 324-0000 Get Directions Write a Review

NPPES record last updated: June 4, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 4, 2026, Mar 24, 2019 (2 updates tracked since 2019).

About Patrick Emerson Day Md NPPES

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

PATRICK EMERSON DAY MD (NPI 1003376138) is an individual pediatric cardiology provider in Austin, Texas, licensed in Texas (T6547) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003376138
Entity TypeIndividualMale
Primary Taxonomy2080P0202X
Provider Legal NamePATRICK EMERSON DAYCredential: MD
Location Address4900 MUELLER BLVDAustin, TX 78723-3079
Mailing Address5904 Aylford CtAustin, TX 78739-1648 · (713) 705-4303
Phone(512) 324-0000
Sole ProprietorNo
Enumeration DateMarch 24, 2019
Last NPPES UpdateJune 4, 20262 updates tracked since enumeration
NPPES CertifiedJune 4, 2026
✔ NPI 1003376138 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0202X
License✔ Licensed in TX · T6547
Definition
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.
4900 MUELLER BLVD, Austin, TX 78723
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Patrick Emerson Day 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.

Other Providers at the Same Location NPPES 20

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

JENNIFER KRENA
Nurse Practitioner (Pediatrics)
4900 MUELLER BLVD
AUSTIN, TX 78723
Travis County (512) 324-0000
RACHEL SCHROER APRN, CPNP-PC/AC
Nurse Practitioner (Pediatrics)
4900 MUELLER BLVD
AUSTIN, TX 78723
Travis County (512) 324-0000
ARTURO VARGAS RRT
Respiratory Therapist, Registered (Neonatal/Pediatrics)
4900 MUELLER BLVD
AUSTIN, TX 78723
Travis County (512) 324-0000
NICOLE R FRIEDMAN
Student in an Organized Health Care Education/Training Program
4900 MUELLER BLVD
AUSTIN, TX 78723
Travis County (512) 324-0000
TANIA EID
Pediatrics
4900 MUELLER BLVD, SUITE 3S.066C
AUSTIN, TX 78723
Travis County (512) 324-0165
RICHARD THOMPSON
Pediatrics
4900 MUELLER BLVD, SUITE 3S.066C
AUSTIN, TX 78723
Travis County (512) 324-0165
DR. KATHRYN BRAND M.D.
Pediatrics
4900 MUELLER BLVD, SUITE 3S.066C
AUSTIN, TX 78723
Travis County (512) 324-0165
REBECCA BYARS CPNP-AC/PC
Nurse Practitioner (Pediatrics, Critical Care)
4900 MUELLER BLVD
AUSTIN, TX 78723
Travis County (512) 324-0000

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 Patrick Day's NPI number?

The NPI number for Patrick Day is 1003376138. It was assigned to this individual provider in the NPPES registry on March 24, 2019.

Where is Patrick Day located?

Patrick Day practices at 4900 Mueller Blvd, Austin, TX 78723. The listed phone number is (512) 324-0000.

What is Patrick Day's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Patrick Day enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for Patrick Day was last updated on June 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.