Our Team

Our knowledgeable and dedicated practitioners and staff members are here to serve you, and provide the best possible assessment, treatment, and support for your Adult ADD & ADHD. We strive for excellence in patient care, which is guaranteed from the moment you contact us. Learn more about our team below!



DR. DALE Prokupek, md.

Dr. Prokupek is a board certified internist and staff physician at Cedars-Sinai Medical Center, as well as an associate clinical professor of medicine at the University of California, Los Angeles (UCLA), Geffen School of Medicine.

In 2013, Dr. Prokupek partnered with Dennis Fowler to create Millennium Medical Associates as a new division of Dr. Prokupek’s existing practice, focused exclusively on the assessment and treatment of adults with ADD/ADHD. Dr. Prokupek and Mr. Fowler understood that adults with ADHD were underserved, as only an estimated 1 in 10 adults with ADHD are diagnosed during their lifetimes. As a sufferer of Adult ADHD, Mr. Fowler believed that a practice focused on excellence in patient care and education was sorely in need, and Dr. Prokupek agreed. Dr. Prokupek is passionate about improving the lives of adult patients with ADD/ADHD.

 Processed with VSCO with a7 preset
 Processed with VSCO with a7 preset
 Processed with VSCO with a7 preset

Ahyana Clark, PA

Ahyana is a certified PA with who specializes in Adult ADD & ADHD, and making her patients smile, with over 15 years experience.

Her passion for helping others led to a career in healthcare, with a history various medical fields.

She strives daily to use her skills, training, and compassion to help those suffering from ADD & ADHD.

Ahyana loves the beach and mountain hiking.

Jamie Conigliaro, NP-C

Jamie is a certified NP-C who specializes in Adult ADD & ADHD, splitting her time between our practice and UCLA.

With over 15 years of nursing experience, Jamie graduated with honors from the Arizona State University (ASU) Family Nurse Practitioner program, and completed her Master's in Health Policy from the University of California, San Francisco in 2007.

Jamie is a caring and compassionate practitioner who enjoys spending time with her patients, getting to know them and providing comprehensive care and education. She is committed to a patient's success and looks forward to meeting and caring for you!

Jamie loves to travel and spend time with her husband and kids.

Hastings lane, NP-C

Hastings is a family nurse practitioner providing care in the ADHD treatment specialty division. He began his advanced practice career in primary care treating chronic and acute disease processes.

Hastings completed his undergraduate at Marymount University and obtained his MSN advanced practice degree at Chamberlain University and achieved certification from the American Association of Nurse Practitioners.

“I am very passionate about increasing quality, functionality, and enjoyment in the lives of my patients.”

Hastings enjoys free time with fitness activities, beach going, and family time.


                                 Processed with VSCO with a7 preset

Dennis Fowler

Dennis Fowler serves as practice director at Millennium Medical Associates. He oversees all aspects of the practice, from patient care standards to community outreach. He works directly with physicians and staff to ensure that Millennium Medical Associates regularly provides the highest level of patient care and service.

Prior to co-founding Millennium Medical Associates, Dennis Fowler served as director of Dr. Prokupek’s internal medicine practice, beginning in 2000. He has 18 years of private healthcare experience and is a graduate of New York University (NYU).

Leny MMA.jpg
 Processed with VSCO with a7 preset
 Processed with VSCO with a8 preset

Leny Jacilda

Leny interacts directly with new patients to ensure timely appointment scheduling. She also facilitates the submission of insurance claims to ensure that patients are reimbursed the maximum amount that their insurance allows. Leny’s dedication to quality patient care helps ensure patient satisfaction, both before and after visits.

Michael Roman

Michael Roman serves as patient liaison. He oversees the refill process for existing patients. Michael's daily priority is to make the practice experience as stress-free for the patient as is possible. 


Eugene was born and raised in Los Angeles. He received a BS in Integrative Biology from the University of California, Berkeley. Eugene is greatly interested in primary care and sports medicine. He is passionate about patient care, and in the future, he would like to work with underserved populations in the inner city. During his free time, Eugene loves to explore the Los Angeles area and is always interested in trying new restaurants. His hobbies include playing basketball, hiking, and running.