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Mary K. Diehn, MD

Family Medicine

GBMC at Hunt Valley - Primary & Family Care
GBMC at Hunt Valley - Primary & Family Care
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Gender: Female
Languages:English, Spanish
Medical School:University of Maryland School of Medicine
Residency:MedStar Franklin Square Medical Center

M. Kate Diehn, MD, earned her Doctor of Medicine Degree from the University of Maryland School of Medicine and received her Bachelor of Science Degree in Biology as well as a Minor in Spanish Language from the University of Maryland College Park. After completing her undergraduate studies, she worked as a teaching assistant for children with behavioral disabilities, including autism spectrum disorder. She completed her residency in family medicine at MedStar Franklin Square Medical Center’s Department of Family Medicine and served a year as chief resident.

GBMC at Hunt Valley - Primary & Family Care
9 Schilling Rd.
Suite 102
Hunt Valley, MD 21031
Call: 410-771-9220
Call: 410-771-9220
M 7:00AM - 7:00PM
Tu 7:00AM - 5:00PM
W 7:00AM - 5:00PM
Th 7:00AM - 7:00PM
F 7:00AM - 5:00PM
Sa 9:00AM - 1:00PM (Schedule varies. Call the practice for availability)


The Patient Rating score is an average of all responses to care provider related questions on our nationally-recognized Press Ganey Patient Satisfaction Survey.

Patients are de-identified for confidentiality and patient privacy.

Great doctor!
Dr. Diehn is very professional and actively caring for all those around her.
Dr. Mary Diehn was very professional, knowledgeable and carrying as always.
Very happy with Dr. Diehn at this practice. Very caring and knowledgeable.
This provider is excellent,
This was my first visit, and it exceeded all expectations!
She is a huge asset to the team. Probably the best care provider I've had, and I've moved a lot.
Dr. Diehn was very professional and listened to my medical concerns. She diligently went over my allergies. Pleased with my care.
Dr. Diehn is careful and thorough in the examination; she pays close attention for any irregularities. She listens to any information I give her, and she and I can have open conversations about tests and treatments. She is a physician whom I respect.
good experience
We think Dr. Mary Diehn is great!
Dr Diehn is awesome, she is very caring and always thorough.
Dr. Diehn is an excellent listener and provides excellent care.
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