Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John T Antoniades, MD

Individual provider Adult Reconstructive Orthopaedic Surgery Physician · NPI 1437187960

John T Antoniades, MD is an Orthopedic Surgery in Baltimore, Maryland. Graduated from University of Maryland School of Medicine in 1994, 32 years ago. Practices with St Agnes Healthcare Inc, a 269-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
32
Trained at
University of Maryland School of Medicine
Licensed in
MD
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3449 Wilkens Ave Ste 300
Baltimore, MD 21229
Phone: (667) 234-9992
Fax: (667) 234-9997
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3449 Wilkens Ave, Baltimore, MD 21229-5281 — (667) 234-9992

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence D0058226 (MD)
Adult Reconstructive Orthopaedic Surgery Physician Taxonomy 207XS0114X · Licence D0058226 (MD)
Sports Medicine (Orthopaedic Surgery) Physician Taxonomy 207XX0005X · Licence D0058226 (MD)

Record details

NPI number1437187960
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 30, 2006
Last updated in NPPESMay 2, 2019
Mailing address3449 Wilkens Ave Ste 300, Baltimore, MD 21229-5218

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice St Agnes Healthcare Inc — 269 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Other providers in Baltimore