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MERCEDES DAYAN
NPI 1902593437
Emergency Medicine in Austin, TX

Active since April 24, 2023PECOS Enrolled
1500 RED RIVER ST FL 2, AUSTIN, TX 78701(512) 495-5555 Get Directions Write a Review

NPPES record last updated: December 4, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mercedes Dayan NPPES

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

MERCEDES DAYAN (NPI 1902593437) is an individual emergency medicine provider in Austin, Texas, licensed in Texas (W0555) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1902593437
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameMERCEDES DAYAN
Location Address1500 RED RIVER ST FL 2Austin, TX 78701-1918
Mailing Address1501 Red River St Fl 2Austin, TX 78712-1845 · (512) 495-5555
Phone(512) 495-5555
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateApril 24, 2023
Last NPPES UpdateDecember 4, 2025
NPPES CertifiedDecember 4, 2025
✔ NPI 1902593437 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in TX · W0555✔ Licensed in TX · BP10083799
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.
1500 RED RIVER ST FL 2, Austin, TX 78701
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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)

Mercedes Dayan is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7810336633
PECOS Enrollment IDI20251229000982
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78701 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
$89.03 typical visit price
range $57.88 – $174.00
Typical copayment $22.25 (range $14.47 – $43.50)
Most-billed visit code 99203
Established Patient
$101.65 typical visit price
range $18.88 – $142.23
Typical copayment $25.41 (range $4.72 – $35.55)
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 Mercedes Dayan's NPI number?

The NPI number for Mercedes Dayan is 1902593437. It was assigned to this individual provider in the NPPES registry on April 24, 2023.

Where is Mercedes Dayan located?

Mercedes Dayan practices at 1500 Red River St Fl 2, Austin, TX 78701. The listed phone number is (512) 495-5555.

What is Mercedes Dayan's specialty?

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

Is Mercedes Dayan enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for Mercedes Dayan was last updated on December 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.