Our Medical Practices are Still Open!

Chronic and other long term medical issues don’t take a break during pandemics and it’s very important to address any health issues while they’re minor rather than having them turn into a more serious situation.

We are actively evaluating already-scheduled appointments – converting most to online video or telephone appointments – and we can do the same with any immediate health concerns you or your family members may have.

Please don’t wait! Reach out to our office if you need us. We have several options to treat you without you having to come into the office. And in the instance where we feel it’s vital that you do come into the office, rest assured that we have taken every precaution to keep you safe.

Appointments and inquiries can be made in the following ways:

Your provider will decide whether a telephone call, online video visit or in-office visit is most appropriate for your situation. Healthcare insurers are now covering telemedicine (online video) visits to help you maintain access to care during the pandemic.

UR Medicine Thompson Health is here to support the health and well-being of our community during this difficult time. Again, we are eager to meet your needs and especially eager to head off any health concerns that have the potential of worsening if care is delayed.

F.F. Thompson Medical Practices (April 9, 2020)

* It is important that you keep up with your prescribed medications. Remember that the drive-thru at CMG Pharmacy is also open at 335 Parrish Street in Canandaigua. No need to even get out of your car.

Internal Medicine

Thompson Health Canandaigua Medical Group

 Part of F.F. Thompson Hospital 

Internists are experts in adult medicine and care for the whole patient. They solve problems with chronic and multiple illnesses no matter how simple or complex. Of all primary care physicians, the “doctors of internal medicine” (also called “internists”) are unique in their focus on adult medicine. They bring to patients an understanding of wellness (disease prevention and the promotion of health), women’s health, substance abuse, mental health, as well as effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. They are specially trained to solve complicated diagnostic problems. They handle severe chronic illnesses and situations where several different illnesses may strike at the same time.

When other medical specialists, such as surgeons or obstetricians, are involved, they coordinate their care for the patients and manage difficult medical problems associated with that care.

Office Location:
335 Parrish Street
Canandaigua, NY 14424

Phone Number:
585-393-2811

Office Hours:
Monday: 8 am - 5 pm
Tuesday - Friday: 8 am - 5:30 pm

Internal Medicine Providers:

Douglas Alling, MD
Kipling Goh, MD
Marlys Howarth, DO
Michael Mitchko, MD
Katherine Gaffney, FNP
Sarah Russell, FNP-C
Rachel Reed, PA

What is a Physician's Assistant (PA)?
What is a Nurse Practitioner (NP)?

If you need Urgent Care
If you have an urgent health care need outside of our office hours that can't wait for the next business day, then you may consider visiting a nearby Urgent Care Center
Accepting New Patients

The following practices are accepting new patients.


Please print out our Patient Registration Form (pdf), fill it out and bring it with you.