Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ann Marie Masciantonio, M.D.
Pediatrics Physician in Newark, DE · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1043316979
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Registry record
Entity type Individual (Type 1)
Name Dr. Ann Marie Masciantonio
Credential M.D.
Sex Female
Practice address 4735 Ogletown Stanton Rd, M.A.P. #2, Suite 1116, Newark, DE, 19713
Phone (302) 368-8653
Fax (302) 368-8836
Enumeration date Sep 16, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License C1-0008141 (DE) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1043316979 active?
Yes, as of the latest NPPES snapshot, NPI 1043316979 is active (record last updated 2007-07-08).
How do I verify Ann Masciantonio's NPI record?
Cross-check NPI 1043316979 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.