Dr. Mark Deyoung MD is a male family physician in Knoxville, IL with over 40 years of experience. His CareDash rating is 5.0 out of 5 by one patient, and he has one review. Dr. Deyoung is affiliated with Hospital Care Consultants of Galesburg Inc. in Galesburg, as well as Galesburg Cottage Hospital in Galesburg. Dr. Deyoung graduated from University of Michigan Medical School in 1978. He is licensed to practice by the state board in Illinois (036108454).

Accepts Medicare*

No Medical Board Actions Found

40+ Years of Experience

* According to our data, Dr. Deyoung accepts Medicare. Please verify this information when making an appointment with them.

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Patient Reviews

Overall Rating


(1 Rating)


5.0 (1)


5.0 (1)


5.0 (1)


5.0 (1)

Bedside Manner:

5.0 (1)

Average Wait Time:

Under 15 minutes

Recommended by 1 Reviewer

Displaying 1 Review

May 16, 2018


Trusted Reviewer

5 Reviews

Galesburg, IL

Dr. DeYoung is wonderful doctor!i

Dr. DeYoung is great at listening to you and so is his staff. They make every accommodation to get in to be seen when needed. Dr. DeYoung h his staff are very knowledgeable and very kind!

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Bedside Manner:
Wait Time:

Under 15 minutes


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About Dr. Deyoung

Education and Training

Dr. Mark Deyoung MD graduated from University of Michigan Medical School in 1978.


  • Family Medicine

Basic Information

Full Name: Mark Deyoung

Gender: Male

License Number: 036108454 - Issued by the state board in Illinois

NPI: 1306845045

Practice and Hospital Affiliations

Affiliated Practices

2. Knox Clinic Corp.

834 North Seminary
Galesburg, IL

(309) 343-3303

3. Medical Arts Clinic

834 North Seminary Street
Galesburg, IL

(309) 343-7035

Affiliated Hospitals

1. Galesburg Cottage Hospital

695 North Kellogg Street
Galesburg, IL

(309) 343-8131

2. Saint Francis Medical Center

530 Northeast Glen Oak Avenue
Peoria, IL

(309) 655-2000

3. St. Mary Medical Center

3333 North Seminary Street
Galesburg, IL

(309) 344-3161


Office Information

221 Northeast Glen Oak Avenue

Peoria, IL 61636

Get Directions

(309) 672-4887

(309) 671-2541

Map Placeholder

Conditions Treated

As a family physician, Dr. Deyoung may treat the following 14 conditions.

Please always check with the doctor directly about what conditions he treats, since he may treat additional conditions not listed here.

List of Procedures Dr. Mark Deyoung MD Performs:

Each link displays more information about how often Dr. Deyoung performs a specific procedure and a list of other doctors who frequently perform the procedure.

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