Stefan Frolov, M.D.

Internal Medicine

Our staff is friendly, professional and maintains a “can do” attitude. We have a “paper free” medical records system. All patient records are computerized, enabling us to utilize chart-free storage and transfer health information more accurately and confidentially, for your privacy.

Dr. Stefan Frolov  graduated from SUNY Upstate Medical University in Syracuse, New York and completed his internship and residency at St. Mary Medical Center in Long Beach.  He practiced in Long Beach Memorial for over 20 years before moving to the Laguna Hills area.  

Our office is conveniently located at the Saddleback Valley Medical Center in Laguna Hills, just less than a mile south from the I-5 freeway, behind the Laguna Hills Mall.   Our office is on the 4th floor of the Medical Tower, which is attached to the Saddleback Memorial Hospital. 

24411 Health Center Drive, Suite 620

Laguna Hills, CA 92653-3672

949 452-3021

Office Hours are Monday through Friday from 9:00am to 5:00pm. 

We accept Medicare and most PPO Insurance.

Currently we are accepting new patients.

For our new patients, Dr. Frolov prefers obtaining your medical history personally, so there are no long forms for you to complete.  We do require some information from you prior to your first visit and we have provided our New Patient form below. You may complete this form on line and submit it directly to our office or you may print the completed form and bring it to your first visit. 

Click here for the New Patient Form

Or if you wish, you can fill this form out at our office.


For our established patients; if any of your personal information or insurance has changed, please complete the following form.

The following reviews were kindly provided by our patients:

"Dr Frolov is by far the best internist I've ever seen. He has been my regular primary doctor for 10 yrs or so and does a very thorough job. He truly is an old school doctor who cares about his patients and their well being."  Peter

"Thank you Dr. Frolov, for your concern and professionalism for my health and my future health. My check up visit with you today was very thorough and much appreciated. Sincerely, ~Lynn Pease~"

To read additional reviews or to leave us your feedback, please visit our patient access website at: