Robert Antoniuk, M.D.
NPI 1285849117 · Emergency Medicine Physician · Mc Lean, VA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Antoniuk, M.D. is a Emergency Medicine Physician provider in Mc Lean, VA (NPI 1285849117).
Provider details
- NPI number
- 1285849117
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD039151 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 25 | 25 |
| Prednisone | 16 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 700 2nd St NeCdu/UcWashington, DC 20002-8100Phone: (202) 346-3000
Registry dates
- Enumerated
- 2007-05-14
- Last updated
- 2021-06-05
- Certified
- 2021-06-05
Frequently asked questions
- What is Robert Antoniuk's NPI number?
- Robert Antoniuk's National Provider Identifier (NPI) is 1285849117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Antoniuk's specialty?
- Robert Antoniuk is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Antoniuk located?
- Robert Antoniuk's practice location on file with NPPES is 8008 Westpark Dr, Mc Lean, VA 22102-3109.
- What is Robert Antoniuk's phone number?
- The practice phone number listed in the NPPES registry for Robert Antoniuk is (703) 287-6625.
- Does Robert Antoniuk accept Medicare?
- Robert Antoniuk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Antoniuk's NPI active?
- Yes — Robert Antoniuk's NPI (1285849117) is active in the NPPES registry as of the last update on 2021-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.