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DR. MACKENZIE REED JOYCE PRENDERGAST DO
NPI 1326783671
Emergency Medicine in Jbsa-fort Sam Houston, TX

Active since May 02, 2022PECOS Enrolled
SAN ANTONIO MILITARY MEDICAL CENTER, MCHE-EMR, 3551 ROGER BROOKE DR, JBSA-FORT SAM HOUSTON, TX 78234(210) 916-4789 Get Directions Write a Review

NPPES record last updated: November 30, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 30, 2025, Aug 22, 2023, May 2, 2022 (3 updates tracked since 2022).

About Dr. Mackenzie Reed Joyce Prendergast Do NPPES

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

DR. MACKENZIE REED JOYCE PRENDERGAST DO (NPI 1326783671) is an individual emergency medicine provider in Jbsa-fort Sam Houston, Texas, licensed in Virginia (0102208422) and active in the NPI registry since May 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1326783671
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. MACKENZIE REED JOYCE PRENDERGASTCredential: DO
Location AddressSAN ANTONIO MILITARY MEDICAL CENTER, MCHE-EMR, 3551 ROGER BROOKE DRJbsa-fort Sam Houston, TX 78234-4504
Mailing Address3551 Roger Brooke DrJbsa Ft Sam Houston, TX 78234-4504 · (210) 916-4789
Phone(210) 916-4789
Sole ProprietorNo
Enumeration DateMay 2, 2022
Last NPPES UpdateNovember 30, 20253 updates tracked since enumeration
NPPES CertifiedNovember 30, 2025
✔ NPI 1326783671 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in VA · 0102208422
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.
Also ListedMilitary Health Care ProviderTaxonomy 171000000X
Also ListedGeneral PracticeTaxonomy 208D00000X · License 0102208422 (VA)
SAN ANTONIO MILITARY MEDICAL CENTER, MCHE-EMR, Jbsa-fort Sam Houston, TX 78234
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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)

Dr. Mackenzie Reed Joyce Prendergast Do 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78234 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.

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 Mackenzie Prendergast's NPI number?

The NPI number for Mackenzie Prendergast is 1326783671. It was assigned to this individual provider in the NPPES registry on May 2, 2022.

Where is Mackenzie Prendergast located?

Mackenzie Prendergast practices at San Antonio Military Medical Center, Mche-Emr 3551 Roger Brooke Dr, Jbsa-Fort Sam Houston, TX 78234. The listed phone number is (210) 916-4789.

What is Mackenzie Prendergast's specialty?

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

Is Mackenzie Prendergast enrolled in Medicare?

Yes. Mackenzie Prendergast is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mackenzie Prendergast was last updated on November 30, 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.