THE FOLLOWING INFORMATION WAS OBTAINED FROM THE PHYSICIAN REGISTER SECTION OF THE WEBSITE OF THE COLLEGE OF PHYSICIANS AND SURGEONS OF ONTARIO (WWW.CPSO.ON.CA) AS OF THE DATE AND TIME NOTED BELOW
07/04/26 03:45:48 AM

General Information

Former Name: No Former Name
Medical School: Queen's University, 1989
Gender: Man
Languages Spoken: ENGLISH, FRENCH, ITALIAN, SPANISH, UKRAINIAN

Practice Information

Primary Business Location: Address not Available
Business Email: No Information Available
Phone: No Information Available
Fax: No Information Available

Specialties

SPECIALTY ISSUED ON CERTIFYING BODY
Neurosurgery
Effective: 28 Aug 1996
Royal College of Physicians and Surgeons of Canada
SPECIALTY: Neurosurgery
ISSUED ON: Effective: Aug 28 1996
CERTIFYING BODY: Royal College of Physicians and Surgeons of Canada

Medical Licences In Other Jurisdictions

USA - Texas

Hospital Privileges

No information available

Professional Corporation Information

Corporation Name: Dr. Stefan Konasiewicz Medicine Professional Corporation
Certificate of Authorization Status: Issued Date: 08 Apr 2014
Shareholders:
Dr. S. Konasiewicz (CPSO#: 60999 )
Business Address: 340 York Blvd suite 200
Hamilton ON L8R 3L2 9055275454
Business Address: 2888 Bathurst St
TORONTO ONTARIO M6B4H6 4162560600
Business Address: 17730 Leslie Street
Newmarket Ontario L3Y 3E4 (905) 853-0404

General Information

Former Name: No Former Name
Gender: Man
Languages Spoken: ENGLISH, FRENCH, ITALIAN, SPANISH, UKRAINIAN
Medical School: Queen's University, 1989

Practice Information

Primary Business Location: Address not Available
Business Email: No Information Available
Phone: No Information Available
Fax: No Information Available

Specialties

SPECIALTY ISSUED ON CERTIFYING BODY
Neurosurgery
Effective: 28 Aug 1996
Royal College of Physicians and Surgeons of Canada
SPECIALTY: Neurosurgery
ISSUED ON: Effective: Aug 28 1996
CERTIFYING BODY: Royal College of Physicians and Surgeons of Canada

Medical Licences In Other Jurisdictions

USA - Texas

Hospital Privileges

No information available

Professional Corporation Information

Corporation Name: Dr. Stefan Konasiewicz Medicine Professional Corporation
Certificate of Authorization Status: Issued Date: 08 Apr 2014
Shareholders:
Dr. S. Konasiewicz (CPSO#: 60999 )
Business Address: 340 York Blvd suite 200
Hamilton ON L8R 3L2 9055275454
Business Address: 2888 Bathurst St
TORONTO ONTARIO M6B4H6 4162560600
Business Address: 17730 Leslie Street
Newmarket Ontario L3Y 3E4 (905) 853-0404

Practice Conditions

This physician is inactive (Expired, Resigned, Suspended, Revoked, or Deceased) and is not permitted to practise medicine.
This physician is inactive (Expired, Resigned, Suspended, Revoked, or Deceased) and is not permitted to practise medicine.

Current Tribunal Proceedings

No information available

Past Tribunal Proceedings (1)

Date of Decision: 09 Feb 2026
Summary of Decision:

On February 9, 2026, the Ontario Physicians and Surgeons Discipline Tribunal found that Dr. Konasiewicz committed the following acts of professional misconduct:

  • failing to maintain the standard of practice of the profession;

  • contravening a term, condition or limitation on the registrant’s certificate of registration; and

  • engaging in an act or omission relevant to the practice of medicine that, having regard to all the circumstances, would reasonably be regarded by registrants as disgraceful, dishonourable or unprofessional.

On the same date, the Tribunal ordered that:

  1. the registrant attend before the panel to be reprimanded;

  2. the Registrar suspend the registrant’s certificate of registration for 6 months commencing February 10, 2026 at 12:01 a.m.;

  3. the Registrar place terms, conditions and limitations on the registrant’s certificate of registration; and

  4. the registrant pay the College costs in the amount of $6,000 by March 9, 2026.

The "Download Full Decision" link provides the Tribunal’s decision and any reprimand. All published OPSDT reasons are available at www.canlii.org/en/on/onpsdt/.

 

Hearing exhibits, including any agreed statement of facts or statement of uncontested facts, can be obtained by contacting the Tribunal Office at [email protected].
Reasons for Decision: Download Full Decision (PDF)
For more details, including any scheduled hearing dates, please visit the OPSDT website

Other Notifications (4)

Source: Inquiries, Complaints and Reports Committee
Effective Date: 12 May 2025
Summary:
Interim Order
 
Effective May 12, 2025, the Inquiries, Complaints and Report Committee (ICRC) made an interim order directing the Registrar to suspend the certificate of registration of Dr. Stefan Joseph Konasiewicz under section 25.4(7).

Source: Member
Effective Date: 13 Jul 2022
Summary:
Summary of the Undertaking given by Dr. Stefan Joseph Konasiewicz to the College of Physicians and Surgeons of Ontario, effective July 13, 2022:
 
A College investigation was conducted into whether Dr. Konasiewicz engaged in professional misconduct and/or was incompetent in his chronic pain management practice. As a result of the investigation, Dr. Konasiewicz will see no more than forty-five (45) chronic pain patients per day, and will schedule no more than five (5) chronic pain patient encounters per hour.  

Download Full Document (PDF)
Source: Inquiries, Complaints and Reports Committee
Effective Date: 22 Jun 2022
Summary:
Caution-in-Person:
               
A summary of a decision of the Inquiries, Complaints and Reports Committee in which the disposition includes a "caution-in-person" is required by the College by-laws to be posted on the register, along with a note if the decision has been appealed.  A “caution-in-person” disposition requires the physician to attend at the College and be verbally cautioned by a panel of the Committee.  The summary will be removed from the register if the decision is overturned on appeal or review. Note that this requirement only applies to decisions arising out of a complaint dated on or after January 1, 2015, or if there was no complaint, the first appointment of investigators dated on or after January 1, 2015.
 
See PDF for the summary of a decision made against this member in which the disposition includes a Caution-in-Person:

Download Full Document (PDF)
Source: Member
Effective Date: 15 Jun 2022
Summary:
Summary of the Undertaking given by Dr. Stefan Joseph Konasiewicz to the College of Physicians and Surgeons of Ontario, effective June 15 2022:
 
Following a public complaint and a report of information received by the College, College investigations were conducted into Dr. Konasiewicz’ delegation practice and his role as a medical director/physician consultant at a cosmetic clinic. As a result of the investigations:
Dr. Konasiewicz will permanently resign his position as medical director/physician consultant with Marco’s Derma Care Cosmetic Clinic no later than March 31, 2022.
Dr. Konasiewicz will engage in professional education, including in delegation, scope of practice and consent to treatment.

Download Full Document (PDF)

Current Tribunal Proceedings

No information available

Past Tribunal Proceedings (1)

Date of Decision: 09 Feb 2026
Summary of Decision:

On February 9, 2026, the Ontario Physicians and Surgeons Discipline Tribunal found that Dr. Konasiewicz committed the following acts of professional misconduct:

  • failing to maintain the standard of practice of the profession;

  • contravening a term, condition or limitation on the registrant’s certificate of registration; and

  • engaging in an act or omission relevant to the practice of medicine that, having regard to all the circumstances, would reasonably be regarded by registrants as disgraceful, dishonourable or unprofessional.

On the same date, the Tribunal ordered that:

  1. the registrant attend before the panel to be reprimanded;

  2. the Registrar suspend the registrant’s certificate of registration for 6 months commencing February 10, 2026 at 12:01 a.m.;

  3. the Registrar place terms, conditions and limitations on the registrant’s certificate of registration; and

  4. the registrant pay the College costs in the amount of $6,000 by March 9, 2026.

The "Download Full Decision" link provides the Tribunal’s decision and any reprimand. All published OPSDT reasons are available at www.canlii.org/en/on/onpsdt/.

 

Hearing exhibits, including any agreed statement of facts or statement of uncontested facts, can be obtained by contacting the Tribunal Office at [email protected].
Reasons for Decision: Download Full Decision (PDF)
For more details, including any scheduled hearing dates, please visit the OPSDT website

Other Notifications (4)

Source: Inquiries, Complaints and Reports Committee
Effective Date: 12 May 2025
Summary:
Interim Order
 
Effective May 12, 2025, the Inquiries, Complaints and Report Committee (ICRC) made an interim order directing the Registrar to suspend the certificate of registration of Dr. Stefan Joseph Konasiewicz under section 25.4(7).

Source: Member
Effective Date: 13 Jul 2022
Summary:
Summary of the Undertaking given by Dr. Stefan Joseph Konasiewicz to the College of Physicians and Surgeons of Ontario, effective July 13, 2022:
 
A College investigation was conducted into whether Dr. Konasiewicz engaged in professional misconduct and/or was incompetent in his chronic pain management practice. As a result of the investigation, Dr. Konasiewicz will see no more than forty-five (45) chronic pain patients per day, and will schedule no more than five (5) chronic pain patient encounters per hour.  

Download Full Document (PDF)
Source: Inquiries, Complaints and Reports Committee
Effective Date: 22 Jun 2022
Summary:
Caution-in-Person:
               
A summary of a decision of the Inquiries, Complaints and Reports Committee in which the disposition includes a "caution-in-person" is required by the College by-laws to be posted on the register, along with a note if the decision has been appealed.  A “caution-in-person” disposition requires the physician to attend at the College and be verbally cautioned by a panel of the Committee.  The summary will be removed from the register if the decision is overturned on appeal or review. Note that this requirement only applies to decisions arising out of a complaint dated on or after January 1, 2015, or if there was no complaint, the first appointment of investigators dated on or after January 1, 2015.
 
See PDF for the summary of a decision made against this member in which the disposition includes a Caution-in-Person:

Download Full Document (PDF)
Source: Member
Effective Date: 15 Jun 2022
Summary:
Summary of the Undertaking given by Dr. Stefan Joseph Konasiewicz to the College of Physicians and Surgeons of Ontario, effective June 15 2022:
 
Following a public complaint and a report of information received by the College, College investigations were conducted into Dr. Konasiewicz’ delegation practice and his role as a medical director/physician consultant at a cosmetic clinic. As a result of the investigations:
Dr. Konasiewicz will permanently resign his position as medical director/physician consultant with Marco’s Derma Care Cosmetic Clinic no later than March 31, 2022.
Dr. Konasiewicz will engage in professional education, including in delegation, scope of practice and consent to treatment.

Download Full Document (PDF)

Training

Medical School: Queen's University, 1989

Registration History

DETAILS DATE
Suspension of registration imposed: Ontario Physicians and Surgeons Discipline Tribunal Effective: 10 Feb 2026
Suspension of registration imposed: Inquiries, Complaints and Reports Committee Effective: 12 May 2025
Terms and conditions amended by Inquiries, Complaints and Reports Committee. Effective: 31 Jan 2025
Terms and conditions amended by Member. Effective: 28 Jan 2025
Terms and conditions amended by Member. Effective: 15 Jun 2022
Transfer of class of registration to: Restricted Certificate Effective: 15 Jun 2022
Arrow_iconTerms and conditions imposed on certificate by: Member Effective: 15 Jun 2022
Transfer of class of registration to: Independent Practice Certificate Effective: 10 Jul 1990
First certificate of registration issued: Postgraduate Education Certificate Effective: 12 Jun 1989
DETAILS: Suspension of registration imposed: Ontario Physicians and Surgeons Discipline Tribunal
Date: Effective: 10 Feb 2026
DETAILS: Suspension of registration imposed: Inquiries, Complaints and Reports Committee
Date: Effective: 12 May 2025
DETAILS: Terms and conditions amended by Inquiries, Complaints and Reports Committee.
Date: Effective: 31 Jan 2025
DETAILS: Terms and conditions amended by Member.
Date: Effective: 28 Jan 2025
DETAILS: Terms and conditions amended by Member.
Date: Effective: 15 Jun 2022
DETAILS: Transfer of class of registration to: Restricted Certificate
Date: Effective: 15 Jun 2022
DETAILS: Terms and conditions imposed on certificate by: Member
Date: Effective: 15 Jun 2022
DETAILS: Transfer of class of registration to: Independent Practice Certificate
Date: Effective: 10 Jul 1990
DETAILS: First certificate of registration issued: Postgraduate Education Certificate
Date: Effective: 12 Jun 1989