Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Robert Antoniuk, M.D.

Emergency Medicine Physician in Mc Lean, VA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1285849117

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert Antoniuk

Credential M.D.

Sex Male

Practice address Mc Lean, VA, 22102

Phone (703) 287-6625

Enumeration date May 14, 2007

Last updated in NPPES Jun 5, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License MD039151 (DC) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 244820 (NY) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Robert Antoniuk practice?

The practice location on file with NPPES is in Mc Lean, VA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Robert Antoniuk?

The National Provider Identifier (NPI) for Robert Antoniuk is 1285849117, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Jennifer Resta Certified Registered Nurse Anesthetist · Mc Lean, VA NPI 1346249810 Steven Scherping Orthopaedic Surgery of the Spine Physician · Mc Lean, VA NPI 1578563375 Anil Taneja Adult Reconstructive Orthopaedic Surgery Physician · Mc Lean, VA NPI 1396736005 Jason Rashkin Clinical Cardiac Electrophysiology Physician · Mc Lean, VA NPI 1831171800 Dawn Wyckoff Family Medicine Physician · Mc Lean, VA NPI 1356328413 Christopher Nelson Anesthesiology Physician · Mc Lean, VA NPI 1487632477 Julie Ambrose Obstetrics & Gynecology Physician · Mc Lean, VA NPI 1043263163 Hang Phan Nguyen Family Nurse Practitioner · Mc Lean, VA NPI 1154374585

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-05.