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This data was extracted on 9/30/2025.

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License Number: C0003051 John A. Greco
License Type: Physician Assistant
License Status: Active  
License Issued: 01/25/2005  License Expiration:  06/30/2027
Licensure Pathway:  Traditional   
Special License Category:  N/A
 Medical Assistance

Accept Medicaid? N/A

Maryland Hospital Privilege Information (as reported by licensee)
Saint Agnes Hospital
Medical Licenses Held in Other States (as reported by licensee)
Licensee has not reported Medical Licenses Held in Other States information for the profile site.
 Physician Assistant Notification of Collaboration Agreements
Collaboration Agreements have not been reported for the profile site.
Active Supervisee - Delegation Agreement For Core Duties
D0047086  Sanjog Kumar Mathur   Status: Approved  |  Approved Date:  03/28/2007  | Agreement No: 5969
Prescribe CDS: Yes  | Non-CDS: Yes  | Medical Devices: Yes
Dispense CDS: No  | Dispense NCDS: No
D0057538  Navinder Singh Sethi   Status: Approved  |  Approved Date:  03/28/2007  | Agreement No: 5970
Prescribe CDS: Yes  | Non-CDS: Yes  | Medical Devices: Yes
Dispense CDS: No  | Dispense NCDS: No
D0038558  Daniel Ch Tang   Status: Approved  |  Approved Date:  03/28/2007  | Agreement No: 5971
Prescribe CDS: Yes  | Non-CDS: Yes  | Medical Devices: Yes
Dispense CDS: No  | Dispense NCDS: No
D0058226  John Timothy Antoniades   Status: Approved  |  Approved Date:  12/04/2020  | Agreement No: 21318
Prescribe CDS: Yes  | Non-CDS: Yes  | Medical Devices: Yes
Dispense CDS: No  | Dispense NCDS: No
D0030008  Sam V. Sydney   Status: Approved  |  Approved Date:  10/04/2021  | Agreement No: 22825
Prescribe CDS: Yes  | Non-CDS: Yes  | Medical Devices: Yes
Dispense CDS: No  | Dispense NCDS: No
Download all Maryland Disciplinary Actions (not time-limited)
All Orders are downloaded in .pdf format.
None.
 Summary of Known Disciplinary Actions by any state medical board (within the past 10 years)   Please Read Description
In Maryland:
No Known Disciplinary Actions by the Maryland Board of Physicians have been reported.
Other States:
No Known Disciplinary Actions by any other state medical board have been reported.
 Pending Charges   Please Read Disclaimer
All Charges are downloaded in .pdf format.
None.
 Other Public Actions in the Practice of the Profession or Administrative Fines (including Maryland)   Please Read Description
No reported Other Public Actions in the Practice of the Profession or Administrative Fines (incl. Maryland) for this licensee.
 Convictions for any crime involving moral turpitude
None reported by the courts.
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