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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MARK ANTOS M.D.
NPI 1942269030
Internal Medicine - Gastroenterology in Seaford, DE

Active since March 20, 2006
1501 MIDDLEFORD RD, SEAFORD, DE 19973(302) 629-4255(302) 629-5777 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mark Antos M.d. NPPES

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

MARK ANTOS M.D. (NPI 1942269030) is an individual gastroenterology provider in Seaford, Delaware, licensed in Delaware (C10003337) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1942269030
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameMARK ANTOSCredential: M.D.
Location Address1501 MIDDLEFORD RDSeaford, DE 19973-3615
Mailing Address1501 Middleford RdSeaford, DE 19973-3615 · (302) 629-4255 · Fax (302) 629-5777
Phone(302) 629-4255
Fax(302) 629-5777
Sole ProprietorNo
Enumeration DateMarch 20, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1942269030 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in DE · C10003337
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
1501 MIDDLEFORD RD, Seaford, DE 19973
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Other Identifiers 1

Medicaid0000102501DE

Other Providers at the Same Location NPPES 8

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

BRANDYWINE PODIATRY, PA
Durable Medical Equipment & Medical Supplies
1501 MIDDLEFORD RD
SEAFORD, DE 19973
Sussex County (302) 378-1022
JOSEPH WALTER BROWN DPM
Podiatrist
1501 MIDDLEFORD RD
SEAFORD, DE 19973
Sussex County (302) 378-1022
DR. RONALD ARTUZ LUNA MD
Internal Medicine
1501 MIDDLEFORD RD
SEAFORD, DE 19973
Sussex County (302) 629-4569
MRS. ANNEDREEA LYNN WEBBER FNP-BC
Nurse Practitioner (Family)
1501 MIDDLEFORD RD
SEAFORD, DE 19973
Sussex County (302) 629-4569
SEAFORD INTERNAL MEDICINE LLC
Internal Medicine
1501 MIDDLEFORD RD
SEAFORD, DE 19973
Sussex County (302) 629-4569
DR. LOUIS JOSEPH-ROMEL CREVECOEUR MD
Internal Medicine
1501 MIDDLEFORD RD
SEAFORD, DE 19973
Sussex County (302) 629-4569
DR. MARK ANG EVANGELISTA M.D.
Internal Medicine
1501 MIDDLEFORD RD
SEAFORD, DE 19973
Sussex County (302) 629-4569
MARK ANTOS, M.D.
Internal Medicine (Gastroenterology)
1501 MIDDLEFORD RD
SEAFORD, DE 19973
Sussex County (302) 629-4255

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 Mark Antos's NPI number?

The NPI number for Mark Antos is 1942269030. It was assigned to this individual provider in the NPPES registry on March 20, 2006.

Where is Mark Antos located?

Mark Antos practices at 1501 Middleford Rd, Seaford, DE 19973. The listed phone number is (302) 629-4255.

What is Mark Antos's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Mark Antos 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 21 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.