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This data was extracted on 1/12/2026.

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License Number: D0072342 Dr. Peter Shay Johnston
License Type: Physician-Medical Doctor
License Status: Active  
License Issued: 05/19/2011  License Expiration:  09/30/2026
Licensure Pathway:  Traditional   
Special License Category:  N/A
Primary Practice Setting
CENTERS FOR ADVANCED ORTHOPAEDICS
23000 MOAKLEY ST
SUITE 102
LEONARDTOWN, MD 20650
Public Address
23000 Moakley Street
Suite 102
Leonardtown, MD 20650
 Education
WAYNE STATE UNIV SCH OF MED
Graduation Year: 2005
 Medical Assistance and Malpractice Insurance

Accept Medicaid? Yes

Maintains Malpractice Insurance? Yes

 Postgraduate Training Program
School Concentration
Thomas Jefferson University, Philadelphia, PA Other
Wayne State University/Detroit Medical Center, Detroit, MI Orthopaedic Surgery
University of North Carolina, Chapel Hill, NC Orthopaedic Surgery
Self-Designated Practice Area (as reported by licensee)
Orthopaedic Surgery
Maryland Hospital Privilege Information (as reported by licensee)
Medstar Saint Mary's 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.
Collaboration and Consultation Agreements for Naturopathic Doctors
Collaboration and Consultation Agreements have not been reported for the profile site.
Active Supervisor - Evaluation and Treatment Protocols for Athletic Trainers
A0000047  Lauren Maria McMillon  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3220
A0001264  Holly Benton Calabro  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3222
A0001363  Bailey Annand Clark  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3223
A0000524  Wesley Eugene Patterson  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3225
A0001496  Rebecca Kate Webb  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3228
A0000042  William James Cranmer  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3229
A0001465  Frances Olivia Foster  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3230
A0001411  Quaron D Fitzgerald  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3231
A0000682  David Joseph Hayes  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3232
A0001473  Rebecca Lynn Natoli  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3233
A0000970  Gabrielle Leigh Smallwood  Status: Approved  | Approved Date: 07/06/2023  | Agreement No: 3234
A0000718  Michele Rene Ferguson  Status: Approved  | Approved Date: 09/18/2023  | Agreement No: 3318
A0001361  Amber Michelle Stuart  Status: Approved  | Approved Date: 12/20/2023  | Agreement No: 3365
A0001687  Keyana Rebecca Smith  Status: Approved  | Approved Date: 08/21/2024  | Agreement No: 3470
A0000774  Moriah Gabrielle Wilkerson  Status: Approved  | Approved Date: 09/10/2024  | Agreement No: 3481
A0001266  Kierra Marshay Croons  Status: Approved  | Approved Date: 10/16/2024  | Agreement No: 3493
A0000910  Shelby Lynn Smith  Status: Approved  | Approved Date: 11/13/2024  | Agreement No: 3510
A0000554  Matthew Berkley Rawlins  Status: Approved  | Approved Date: 09/12/2025  | Agreement No: 3610
 Supervised Genetic Counselor - Active Supervisor
Supervisor Agreements have not been reported for the profile site.
Active Supervisor - Delegation Agreement For Core Duties
C0006659  Sonya Karbach Marino   Status: Approved  |  Approved Date:  08/28/2019  | Agreement No: 19093
C0008530  Haley Marie Squires   Status: Approved  |  Approved Date:  08/05/2022  | Agreement No: 31068
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.
 MALPRACTICE (Information to be taken into consideration when reviewing a licensee's profile)
Malpractice Judgments and Arbitration Awards
(within the past 10 years) None Reported
Malpractice Settlements
(If there are 3 or more settlements of $150,000 or greater within the past 5 years) None Reported
 Convictions for any crime involving moral turpitude
None reported by the courts.
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410.764.4777  |  Toll Free: 800.492.6836