John Antoniades, MD
NPI 1437187960 · Orthopaedic Surgery Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Antoniades, MD is a Orthopaedic Surgery Physician provider in Baltimore, MD (NPI 1437187960).
Provider details
- NPI number
- 1437187960
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0058226 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,936 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,089 | $132 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 626 | $74 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 128 | $174 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 30 | $95 |
| Replacement of Knee Joint, Both Sides of Knee27447 | 20 | $1,352 |
| Removal of Joint Lining From Multiple Knee Joint Compartments Using an Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Meloxicam | 69 | 44 |
| Tramadol Hcl | 34 | 20 |
| Cephalexin | 25 | 21 |
| Oxycodone Hcl | 20 | 14 |
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)
- 3449 Wilkens AveSuite 107Baltimore, MD 21229-5281Phone: (667) 234-9992Fax: (667) 234-9997
Registry dates
- Enumerated
- 2006-06-30
- Last updated
- 2019-05-02
Frequently asked questions
- What is John Antoniades's NPI number?
- John Antoniades's National Provider Identifier (NPI) is 1437187960, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Antoniades's specialty?
- John Antoniades is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Antoniades located?
- John Antoniades's practice location on file with NPPES is 3449 Wilkens Ave Ste 300, Baltimore, MD 21229.
- What is John Antoniades's phone number?
- The practice phone number listed in the NPPES registry for John Antoniades is (667) 234-9992.
- Does John Antoniades accept Medicare?
- John Antoniades is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Antoniades's NPI active?
- Yes — John Antoniades's NPI (1437187960) is active in the NPPES registry as of the last update on 2019-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.