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Dr. Kathryn McKenzie Tonder, MD

Accepting New Patients
Specializes in: Family Medicine
University of California, San Diego (UCSD), School of Medicine (2002)
Professional interests include: pregnancy, weight management, palliative care, and more.
751 Northeast Blakely Drive Suite 5010
Issaquah, WA 98029

Dr. Kathryn McKenzie Tonder, MD is a family medicine practitioner in Issaquah, WA specializing in family medicine. She graduated from University of California, San Diego (UCSD), School of Medicine in 2002 and has 24 years of experience. Dr. Kathryn McKenzie Tonder, MD is affiliated with Providence and Swedish.

View Doctor's Full Profile (206) 386-2229

Office Locations

751 Northeast Blakely Drive Suite 5010
Issaquah, WA 98029
open_in_new

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2012 were lab tests, preventive care, diabetes management and blood draw.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

blood draw 17
diabetes management 38
lab tests 38
preventive care 38

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2013 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 399
lab tests 16
preventive care 40
vaccines 40

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 34
Female 117
Age
From 65 to 74 57
From 75 to 84 58
85 and over 25
Less than 65 11

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2013

Hypertension 66
High Cholesterol 55
Stroke 0
Ischemic Heart Disease 25
Depression 25
Chronic Kidney Disease 21
Asthma 0
Osteoperosis 0
Atrial Fibrilation 11
Heart Failure 11
Chronic Obstructive Pulmonary Disease 9
Diabetes 25
Dementia 8
Cancer 9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2014 were preventive care and vaccines.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 292
preventive care 24
vaccines 24

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 35
Female 86
Age
From 65 to 74 44
From 75 to 84 54
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2014

Hypertension 46
High Cholesterol 50
Stroke 0
Ischemic Heart Disease 22
Depression 17
Chronic Kidney Disease 22
Asthma 0
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 9
Chronic Obstructive Pulmonary Disease 11
Diabetes 21
Dementia 10
Cancer 0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2015 were preventive care and vaccines.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 304
preventive care 66
vaccines 66

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 74
Female 158
Age
From 65 to 74 90
From 75 to 84 100
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2015

Hypertension 57
High Cholesterol 58
Stroke 0
Ischemic Heart Disease 25
Depression 21
Chronic Kidney Disease 29
Asthma 12
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 18
Dementia 9
Cancer 13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2016 were preventive care and vaccines.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 287
preventive care 44
vaccines 44

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 29
Female 73
Age
From 65 to 74 37
From 75 to 84 46
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2016

Hypertension 58
High Cholesterol 51
Stroke 0
Ischemic Heart Disease 26
Depression 20
Chronic Kidney Disease 33
Asthma 11
Osteoperosis 0
Atrial Fibrilation 11
Heart Failure 12
Chronic Obstructive Pulmonary Disease 0
Diabetes 24
Dementia 12
Cancer 11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2017 were preventive care, vaccines, lab tests and diabetes management.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

diabetes management 17
doctor visit 330
lab tests 17
preventive care 55
vaccines 38

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 36
Female 84
Age
From 65 to 74 47
From 75 to 84 51
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2017

Hypertension 56
High Cholesterol 39
Stroke 0
Ischemic Heart Disease 25
Depression 15
Chronic Kidney Disease 28
Asthma 0
Osteoperosis 0
Atrial Fibrilation 12
Heart Failure 12
Chronic Obstructive Pulmonary Disease 0
Diabetes 25
Dementia 11
Cancer 16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2018 were lab tests, preventive care, vaccines and diabetes management.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

diabetes management 16
doctor visit 311
lab tests 33
preventive care 32
vaccines 16

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 37
Female 82
Age
From 65 to 74 45
From 75 to 84 49
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2018

Hypertension 61
High Cholesterol 55
Stroke 0
Ischemic Heart Disease 25
Depression 19
Chronic Kidney Disease 33
Asthma 0
Osteoperosis 12
Atrial Fibrilation 13
Heart Failure 13
Chronic Obstructive Pulmonary Disease 11
Diabetes 26
Dementia 13
Cancer 13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2019 were preventive care and vaccines.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 314
preventive care 21
vaccines 21

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 35
Female 78
Age
From 65 to 74 43
From 75 to 84 46
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2019

Hypertension 64
High Cholesterol 66
Stroke 0
Ischemic Heart Disease 26
Depression 27
Chronic Kidney Disease 30
Asthma 0
Osteoperosis 10
Atrial Fibrilation 0
Heart Failure 12
Chronic Obstructive Pulmonary Disease 10
Diabetes 26
Dementia 12
Cancer 12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2020 were preventive care and vaccines.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 160
preventive care 19
vaccines 19

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 36
Female 77
Age
From 65 to 74 47
From 75 to 84 46
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2020

Hypertension 55
High Cholesterol 50
Stroke 0
Ischemic Heart Disease 29
Depression 27
Chronic Kidney Disease 27
Asthma 0
Osteoperosis 10
Atrial Fibrilation 12
Heart Failure 12
Chronic Obstructive Pulmonary Disease 0
Diabetes 25
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2021 were preventive care and vaccines.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 218
preventive care 54
vaccines 14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 42
Female 78
Ethnicity
Non-Hispanic White 107
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 46
From 75 to 84 45
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2021

Hypertension 59
High Cholesterol 60
Stroke 0
Ischemic Heart Disease 25
Depression 33
Chronic Kidney Disease 28
Asthma 0
Osteoperosis 17
Atrial Fibrilation 13
Heart Failure 12
Chronic Obstructive Pulmonary Disease 15
Diabetes 23
Dementia 11
Cancer 0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2022 were preventive care.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 212
preventive care 40

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 39
Female 95
Ethnicity
Non-Hispanic White 122
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 55
From 75 to 84 51
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2022

Hypertension 63
High Cholesterol 74
Stroke 0
Ischemic Heart Disease 20
Depression 23
Chronic Kidney Disease 22
Asthma 0
Osteoperosis 19
Atrial Fibrilation 19
Heart Failure 12
Chronic Obstructive Pulmonary Disease 11
Diabetes 21
Dementia 0
Cancer 12

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2023 were preventive care.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 252
preventive care 27

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 35
Female 86
Ethnicity
Non-Hispanic White 109
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 46
From 75 to 84 44
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2023

Hypertension 64
High Cholesterol 75
Stroke 0
Ischemic Heart Disease 21
Depression 21
Chronic Kidney Disease 24
Asthma 9
Osteoperosis 19
Atrial Fibrilation 18
Heart Failure 13
Chronic Obstructive Pulmonary Disease 11
Diabetes 20
Dementia 0
Cancer 12

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA during 2024 were preventive care and vaccines.

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

doctor visit 200
preventive care 13
vaccines 13

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Male 34
Female 78
Age
From 65 to 74 38
From 75 to 84 47
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD in 2024

Hypertension 68
High Cholesterol 75
Stroke 0
Ischemic Heart Disease 21
Depression 25
Chronic Kidney Disease 29
Asthma 0
Osteoperosis 19
Atrial Fibrilation 19
Heart Failure 13
Chronic Obstructive Pulmonary Disease 13
Diabetes 21
Dementia 0
Cancer 17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Kathryn McKenzie Tonder, MD for Medicare patients.

The highest averages for the top procedures that Dr. Kathryn McKenzie Tonder, MD treated as a family medicine practitioner in Issaquah, WA were preventive care, vaccines, lab tests and diabetes management.

blood draw 17
diabetes management 23
doctor visit 273
lab tests 26
preventive care 36
vaccines 29

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD.

Gender
Female 84
Male 35
Ethnicity
Black / African American 0
Asian / Pacific Islander 0
Non-Hispanic White 26
Native American / Alaskan Native 0
Hispanic 0
Other 0
Age
75 to 84 49
85 and over 1
Less than 65 0
65 to 74 45

Average of Total of Conditions of Medicare patients treated by Dr. Kathryn McKenzie Tonder, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Kathryn McKenzie Tonder, MD treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension 55
High Cholesterol 54
Stroke 0
Ischemic Heart Disease 22
Depression 21
Chronic Kidney Disease 25
Asthma 2
Osteoporosis 8
Heart Failure 10
Chronic Obstructive Pulmonary Disease 7
Diabetes 21
Atrial Fibrillation 9
Dementia 6
Cancer 8

Education & Training

Dr. Kathryn McKenzie Tonder, MD graduated from University of California, San Diego (UCSD), School of Medicine in 2002. She completed residency at Tacoma Genl Hosp. She is certified by the American Board of Family Medicine, Family Medicine and has a state license in Washington.

Medical School: University of California, San Diego (UCSD), School of Medicine (2002)

Residency: Tacoma Genl Hosp

Board Certification: American Board of Family Medicine, Family Medicine

Licensed In: Washington

Affiliations & Hospitals

Dr. Kathryn McKenzie Tonder, MD is associated with these hospitals and organizations:

Providence
Swedish

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Kathryn McKenzie Tonder, MD appears to accept the following insurance providers: Aetna PPO, Humana PPO, CIGNA PPO, HealthSmart PPO, Medicare Advantage, Humana Medicare Advantage, TriWest, Medicaid, Humana, United Healthcare Medicaid, OptumHealth Behavioral Solutions (United Behavioral Health), United Healthcare PPO, Providence, Humana HMO, First Health, WellPoint, Kaiser Permanente, Carelon PPO, Premera, Evernorth PPO, Seven Corners, Ambetter Casecade Select, Health Net Tricare, First Choice PPO, Ambetter Casecade Care, Regence BlueShield of Washington PPO and Pacific Medical Center TRICARE.

Insurance Accepted by Provider includes:

According to our sources, Dr. Kathryn McKenzie Tonder, MD accepts the following insurance providers:

Aetna PPO
Humana PPO
CIGNA PPO
HealthSmart PPO
Medicare Advantage
Humana Medicare Advantage
TriWest
Medicaid
Humana
United Healthcare Medicaid
OptumHealth Behavioral Solutions (United Behavioral Health)
United Healthcare PPO
Providence
Humana HMO
First Health
WellPoint
Kaiser Permanente
Carelon PPO
Premera
Evernorth PPO
Seven Corners
Ambetter Casecade Select
Health Net Tricare
First Choice PPO
Ambetter Casecade Care
Regence BlueShield of Washington PPO
Pacific Medical Center TRICARE

Ratings & Reviews

Dr. Kathryn McKenzie Tonder, MD has an exceptional overall rating with an average of 4.98 out of 5 stars based on 838 ratings. We collect ratings and reviews of Dr. Kathryn McKenzie Tonder, MD from all over the web to help you find the right in Issaquah, WA. 

4.98
Overall Rating
Leave a Review
Reviews Left On DocSpot
Overall Rating: 5.0 2023-10-15 
I have been going to Dr. Tonder for at least 12 years and I have NEVER had a bad experience.  She is kind, empathetic & professional in addition to being a talented physician.  She has taken care of all the members of my family and has gone above and beyond our expectations many times over.  She is the kind of doctor everyone should be so lucky as to have.
Reviews From Around The Web
Overall Rating: 5.0 2026-05-21
Patient verified via Press Ganey
My care with Dr Tonder is always the best I could ever hope for. She is the physician that every patient longs for (and deserves). The only issue I have ever had is that all the doctors are at their limit of patients. My husband desperately wanted to enjoy the care of Dr. Tonder, but for the last 3 years she has not been able to take on new patients because of her current patient load.
Overall Rating: 5.0 2026-02-18
Patient verified via Press Ganey
After multiple providers and specialist, Dr. Tonder provides the best care and treatment to her patients. I've finally begun to receive the medications and treatment needed for many years under her care. Swedish providers are In the best available programs and give most excellent care!
Overall Rating: 5.0 2026-01-24
Patient verified via Press Ganey
Dr. Tonder always is concerned about and knowledgeable of what I am there for on a visit. She always answers all my questions and Is sure that I understand everything. I have never left a visit with her that she had not addressed all my concerns. She is an excellent provider.
Overall Rating: 5.0 2026-03-17
Patient verified via Press Ganey
I live on the Peninsula nearly two hours away and Dr. Tonder has been kind enough to manage my care as well as maintaining an over-seeing position with the other providers and services I receive. This has resulted in a great team approach that I appreciate.
Overall Rating: 5.0 2026-03-02
Patient verified via Press Ganey
Dr. Tonder has been the best provider I found since moving to Washington 10 years ago! I will miss not having her for my doctor as I will be moving to Texas in a few weeks! She always gives care and concerns for her patients! She is one of a kind!
Overall Rating: 5.0 2026-03-30
Patient verified via Press Ganey
The Dr solved ongoing issues and I believe improved my overall wellbeing and long term health. I'm thankful she also made sure insurance covered meds and provided new options. She listens to the whole story not just one symptom, she's the best!
Overall Rating: 5.0 2026-01-27
Patient verified via Press Ganey
Dr Tondar had been our physician for 5 years and we are very very confident with her evaluations and directions given in all the different situations. We feel free to share what the issues are and our concerns.
Overall Rating: 5.0 2026-01-07
Patient verified via Press Ganey
Dr. Tonder is the best general practitioner that I have ever had. She listens actively and provides excellent guidance. She is warm, polite and professional. I always look forward to seeing her.
Overall Rating: 5.0 2026-01-26
Patient verified via Press Ganey
My provider was out that day. My wife found me unconscious the day before and I just wanted to be checked out. She did a great job. Please thank her again for me.

To see all 838 reviews for Dr. Kathryn McKenzie Tonder, MD, view their full profile.

General Payments

These charts describe general payments received by Dr. Kathryn McKenzie Tonder, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
Bayer HealthCare Pharmaceuticals Inc. $19 Mirena
$19
Types of Payments
Food and Beverage $19

Biography

Dr. Kathryn Tonder sees patients in Spanaway, WA, Seattle, WA, and Issaquah, WA. Her medical specialty is family medicine. The average patient rating for Dr. Tonder is 5.0 stars (out of 5). Clinical interests for Dr. Tonder include diabetes, mole removal, and newborn care. Dr. Tonder is affiliated with Providence and Swedish Issaquah Campus. HealthSmart, Coventry, and CIGNA Plans are among the insurance carriers that Dr. Tonder honors. According to Doctor.com, new patients are welcome to contact her office in Issaquah, WA. She attended medical school at the University of California, San Diego (UCSD), School of Medicine.

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