Dr. Mary M. Koumas, DO | Lake Forest, CA | Family Physician

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With 48 years in family medicine, Dr. Mary Koumas treats high cholesterol in children and teens, hyperlipidemia, and hypertension, and performs comprehensive metabolic panels and physical therapy. She is affiliated with Memorialcare Saddleback Medical Center and College Hospital Costa Mesa. Dr. Koumas earned her medical degree from A.T. Still University Kirksville College of Osteopathic Medicine and sees patients in Lake Forest and Laguna Hills, California. She speaks English and Spanish.

Overview based on verified provider data

accepting new patients
4.3

19 Ratings
48 years of experience
speaks English, Spanish
A T Still University Kirksville College Of Osteopathic Medicine
8 written reviews
1 specialty
6 areas of expertise
2 hospital affiliations
2 office locations
Female

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Koumas' Ratings and Reviews

4.3

19 Ratings with 8 written Reviews

Average Wait Time 30 Minutes

How was your appointment with
Dr. Koumas?

Patients’ Perspective

Gave an accurate diagnosis: (11) Did WellNeeds Improvement (2)
Had a good bedside manner: (10) Did WellNeeds Improvement (2)
Spent time with me: (11) Did WellNeeds Improvement (2)
Provided follow-up after the visit: (10) Did WellNeeds Improvement (2)
Flexible scheduling: (11) Did WellNeeds Improvement (2)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

19 ratings & reviews

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Showing 1 to 8 of 8 reviews

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I love Dr.Mary she treats me like family and takes very good care of all my needs and concerns. She spends time with me, and does research on any concerning issues and sends me to specialists when needed.

October 5th, 2020

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Dr. Mary Koumas is a awesome physician, she gave my mother the best care when dealing with my mother's diagnosis Alzheimer's and Dementia for 6 years. Now my mother is with the Lord Jesus. Dr. Mary is a awesome physician and a dear friend. Thank You Dr. Mary from me and my family

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

July 24th, 2020

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the waiting time is rediculous even with an appointment, staff is rude no compassion for patients had to change doctors never will recommend this Dr. to anyone..

Did Well

Needs Improvement

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

October 29th, 2015

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Six week time frame to get an appointment. Dr. Koumas rarely in the office. Loves to prescribe pills to old people to move them in and out. Even when the patient doesn't know where they are, who the president is, she'll prescribe a pill and watch as the patient hands behind the driver seat getting ready to drive! No conscience this doctor.

Did Well

Needs Improvement

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

September 21st, 2015

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Doctor Mary has been our family doctor for over 23 years and she is the best. Typically runs late, but the wait is worth the care she provides.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

August 13th, 2012

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There are so many words to describe Dr Mary Koumas, but AMAZING would be the most appropriate. I have been seeing Dr Mary since 1988. She is caring, ...

Did Well

Gave an accurate diagnosis
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

August 7th, 2012

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Dr. Koumas is by far the best doctor I've ever seen but had to stop seeing her after many years for many reasons. The Pros- Dr. Mary Koumas is an excellent doctor, very caring, very knowledgeable and spends a good amount of time talking to you to understand the problem.The Cons- Her staff is terrible. The front desk is extremely curt, brusque, unfriendly and rude. Another issue is the wait time. Expect to wait between 45 mins - 1.25 hrs if you're seeing Dr. Mary (as she is know by her patients since her brother is also a doctor there). Even if you book the 1st appt. of the morning, there will be 2 or 3 other people booked at the same exact time as you!!! If you start your day by triple and quadruple booking like that, OF COURSE it's going to snowball throughout the day, EVERYDAY.It's too bad b/c Dr. Mary is an excellent, excellent doctor & I would have loved to continue seeing her as my doctor. It's been awhile but I haven't found a dr. I trust as much as her.I could have suffered… the unfriendly staff but the wait time just drove me nuts!

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

April 8th, 2010

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I have been a patient of Doctor Koumas for over 30 years and I have always known her to compassionate, caring and generous with her time.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Flexible scheduling

Needs Improvement

May 6th, 2009

Lake Forest Medical Group

24401 Muirlands Blvd Ste ALake Forest, CA 92630

Tel: (714) 597-7214

Mon9:00 am - 6:00 pm

Tue9:00 am - 6:00 pm

Wed9:00 am - 6:00 pm

Thu9:00 am - 6:00 pm

Fri9:00 am - 6:00 pm

SatClosed

SunClosed

Memorialcare Saddleback Medical Center

24451 Health Center DrLaguna Hills, CA 92653

Tel: (949) 837-4500


Dr. Mary M Koumas, DO	Dr. Howard Pyo, DO	Dawn Vollmann, PA-C	Dr. Michael Kurtz, DO
Family Medicine	Family Medicine	Family Medicine	Family Medicine
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
4.3 (19 Ratings)	0 (0 Ratings)	0 (0 Ratings)	4.6 (37 Ratings)
48 Years of Experience	10 Years of Experience	9 Years of Experience
No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option
Speaks English, Spanish	Speaks English	Speaks English	Speaks English
Lake Forest , CA	Fullerton , CA	Huntington Beach , CA	Garden Grove , CA
Med School: A T Still University Kirksville College Of Osteopathic Medicine	Med School: Lake Erie College Of Osteopathic Medicine		Med School: Des Moines University College of Osteopathic Medicine and Health Sciences
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Accepts Medicare
Accepts Medicaid

Family Medicine

Check-up
Contraception
Family Planning
Immunization
Influenza
Weight Loss

Dr. Mary M Koumas holds an expired medical license in the state of California.

Medical License

Doctor Of Osteopathy with an expired medical license in the state of California that expired in 2025.

Education & Training

Medical School

Graduated from A T Still University Kirksville College Of Osteopathic Medicine in 1978.

NPI Number

Dr. Koumas' NPI number is 1306838909.

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What languages does Dr. Mary Koumas speak?: Dr. Mary Koumas speaks English and Spanish.
Is Dr. Mary Koumas accepting new patients?: Dr. Mary Koumas is accepting new patients on Vitals. View Dr. Mary Koumas's profile on Vitals to make an appointment.
Where is Dr. Mary Koumas's office located?: Dr. Mary Koumas's office is located at 24401 Muirlands Blvd Ste A, Lake Forest, CA, 92630.
Does Dr. Mary Koumas accept my insurance?: You can see the insurance plans that Dr. Mary Koumas accepts on their Vitals profile.
Which hospitals is Dr. Mary Koumas affiliated with?: Dr. Mary Koumas is affiliated with Memorialcare Saddleback Medical Center and College Hospital Costa Mesa.

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