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

DR. MICHAEL ANTHONY HOLLIDAY M.D.
NPI 1023072907
Pediatrics - Neonatal-Perinatal Medicine in Alexandria, VA

Q: What is Michael Holliday's NPI number?

The NPI number for Michael Holliday is 1023072907. It was assigned to this individual provider in the NPPES registry on April 17, 2006.

Q: What is Michael Holliday's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Q: When was this NPI record last updated?

The NPPES record for Michael Holliday was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 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.

Active since April 17, 2006PECOS Enrolled

4320 SEMINARY RD, SUITE 3000, ALEXANDRIA, VA 22304(703) 504-3069(703) 504-3632 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Michael Anthony Holliday M.d. NPPES

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

DR. MICHAEL ANTHONY HOLLIDAY M.D. (NPI 1023072907) is an individual neonatal-perinatal medicine provider in Alexandria, Virginia, licensed in Virginia (0101051268) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1023072907

Entity TypeIndividualMale

Primary Taxonomy2080N0001X

Provider Legal NameDR. MICHAEL ANTHONY HOLLIDAYCredential: M.D.

Location Address4320 SEMINARY RD, SUITE 3000Alexandria, VA 22304-1535

Mailing Address4320 Seminary Road, Suite 3000Alexandria, VA 22304 · (703) 504-3069 · Fax (703) 504-3632

Phone(703) 504-3069

Fax(703) 504-3632

Sole ProprietorNo

Enumeration DateApril 17, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1023072907 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2080N0001X

License✔ Licensed in VA · 0101051268

Definition

A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.

4320 SEMINARY RD, Alexandria, VA 22304

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Other Identifiers 1

Medicaid6703119VA

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. Michael Anthony Holliday M.d. 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.

DR. MADHUSUDANAN SRAMBICKAL RAMASWAMY M.D., M.S.

Internal Medicine (Critical Care Medicine)