About Us2022-06-03T12:03:26-04:00


family physician toronto - Lorena Barrientos

Dr. Lorena Barrientos,
Family Physician

Dr. Barrientos studied Biological Sciences at the University of Guelph and earned her medical degree at Universidad de Concepcion, Chile in 2000.

She completed her post-graduate training in family medicine at Dalhousie University, Nova Scotia. She later earned a Fellowship In Inpatient Medicine at the University of Toronto.

Dr. Barrientos has worked in varied clinical environments, such as First Nations communities in Northern Ontario, Public Health Clinics and in Hospital Settings such as the Guelph General Hospital.

Dr. Barrientos enjoys providing care to patients of all ages and is excited to help build and develop Umedical.

“A good physician treats the disease, the great physician treats the patient who has the disease.”⁣ ⁣ This is Dr. Sarah Salman, MBBD, MRCGP, and she is one of our family physicians

Dr. Sarah Salman, MBBS,
Family Physician

Dr. Sarah Salman, MBBS, MRCGP, is a graduate of Norwich Medical School, University of East Anglia in the United Kingdon. She trained as a family physician in Suffolk, England, and has recently moved to Canada.

Dr. Sarah Salman has been practicing medicine since 2013, working in various hospitals and family medicine clinics in England. Her clinical interests include women’s health and dermatology.

Dr. Louisa Hong, MD,
Family Physician

Dr. Louisa Hong obtained her Honours Bachelor of Science from the University of Toronto, and her Doctor of Medicine degree from McMaster University. She completed her family medicine residency at Sunnybrook Hospital in 2018.

Dr. Louisa Hong strives to deliver patient-centred care by treating every patient with dignity, respect, and compassion.

Dr. Louisa Hong speaks both English and Mandarin. Outside of medicine, she finds joy in photography, ceramics, travel, and spending time with her toddler daughter.

Dr. Shirin Kiahosseini, MD, CCFP
Family Physician

Dr. Shirin Kiahosseini, MD, CCFP obtained her Doctor of Medicine degree from Medical School in Iran. She completed her Family Medicine residency at Newfoundland and Labrador and her Rural Medicine training at Labrador Grenfell Health.

She speaks English and Persian(Farsi). Dr Kiahosseini enjoys practicing comprehensive family medicine, and is experienced with helping patients of all ages.

She has been practicing medicine in Canada since 2012 and enjoys expanding her medical knowledge basis by attending numerous educational courses. In her spare time she enjoys spending time with her family and hiking.

Dr Oldfield

Dr. Sam Oldfield, MBBS, MRCGP, MA
Family Physician

Dr. Oldfield, MBBS, MRCGP, MA is a graduate of Newcastle University in the United Kingdom.

He completed his family medicine training in London, England, and holds a masters degree in Medical Ethics from Keele University.

Dr. Oldfield has been practicing medicine since 2013, and enjoys working with all age groups.

He has a particular interest in geriatric medicine, and in his spare time enjoys hiking and woodworking.

Family Health Organization

Ms. Yulia
Clinical Assistant & Clinic Manager

Ms. Yulia joined Umedical Family Health Organization in January 2020. Prior to that, she worked in a family practice clinic and in the Victoria Order of Nurses.

Once she moved to Canada, she is currently practicing as an International Medical Graduate while working towards obtaining her medical license as a physician in Canada. In addition to this, Ms. Yulia studies at McMaster University in Applied Clinical Research to fulfil her interest and passion for medical research.

At Umedical, we are able to provide quick and efficient care and attention by having Ms. Yulia on our team.


Ms. Maya Stojanovic


Ms. Maya Stojanovic holds a degree in Physiotherapy from Queen’s University and a Medical Degree from University of Nis, Serbia.

Ms. Stojanovic has over 15 years of clinical experience in the areas of orthopedics, neurology, sports medicine rehabilitation and cardiorespiratory rehabilitation.


Ms. Catherine

Operations Manager

Ms. Catherine had obtained her Honours Bachelor of Science from the University of Toronto.

Overall, Ms. Catherine has taken on various administrative and management roles in healthcare and has worked within many large health organizations including UHN, Scarborough Health Network, Mackenzie Hospital, family and specialty clinics as well as community care. Her diversity of experience has aided her in providing exceptional patient care with a deep understanding of the healthcare system as a whole.

She is happy to be able to help patients with many different needs at Umedical’s Toronto Medical Clinic.

Ms. Pauline
Senior Medical Office Assistant

Ms. Pauline has 12 years of experience as a medical office assistant.

She graduated from the University of Toronto with a BSc. degree in Toxicology.

Ms. Pauline takes pride in working efficiently and with care to help the clinic run smoothly and to give each patient a positive experience.

We are a Family Health Organization (FHO)

In 2020 uMedical will become a Family Health Organization (FHO).

FHO stands for Family Health Organization – an initiative of the Ontario Medical Association and the Ontario Ministry of Health and Long Term Care.

Information about our Family Health Organization (FHO)

A Family Health Organization (FHO) is a group of family physicians who work together to provide your family with the best access to personalized care and quality services – with a focus on illness prevention.

FHOs provide care during regular and extended office hours and patients also have access to a nurse-staffed Telephone Health Advisory Service.

For FHOs to be effective, enrolled patients must commit to receiving their primary health care Monday to Friday from their primary physician or, if she is not available, from another doctor in the FHO.

Additionally, as a patient of an FHO, you will have access to referrals to specialists and having your doctor informed of your care both in and out of the hospital.

What Does This Mean For Patients?

When you are a patient at Umedical, you may access:

  • Ability to call for same day appointments based on availability
  • Requests for us to advocate for you to get the tests and services you need
  • Requests for us to make appropriate referrals on your behalf
  • Telephone health advice 24/7 through the Telephone Health Advisory Service
  • Extended hours on evenings and weekends

Frequently Asked Questions (FAQs)

What is a FHO in Ontario2019-12-06T14:13:18-05:00

A Family Health Organization (FHO) is an initiative of the Ontario Medical Association and the Ontario Ministry of Health and Long-Term Care. An FHO is a group of family physicians who are working together to give you and your family better access to quality primary health care services.

Can I go to another walk-in clinics if I am part of your FHO?2019-11-13T13:00:18-05:00
The preference is that you DO NOT go to another walk-in clinic outside of uMedical.
If you belong to uMedical FHO, your doctor will be billed by OHIP if you visit a different clinic.
Additionally, if you go to a different walk-in clinic, that clinic DOES NOT FORWARD YOUR RECORDS to uMedical, so our records of your health will not be complete.
The government compensates uMedical for remaining open extra hours and into the evening many times per week to ensure you have access to urgent medical care.
What services are not covered by OHIP for patients that are part of a FHO?2019-11-13T13:01:34-05:00
The Ontario Health Insurance Plan (OHIP) pays for most of your medical visits to our office.
There are, however, uninsured services, which OHIP does NOT COVER, such as:
  • prescription refills by phone
  • medical forms for insurance
  • legal or employment purposes
  • photocopying, faxing and transferring medical records
While you can pay for these services on an as-needed basis, Family Physicians at uMedical Station offer a Block fee program ( link) as a more convenient and cost-effective way to manage these charges.
Please speak to a receptionist to enquire about this plan.
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