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Our Team

FRANK ZARKA: President and Chief Executive Officer

 

Mr. Zarka joined Advanced Sleep Medicine Services as President and Chief Executive Officer in July, 2010. Frank is a team-oriented senior executive with over 30 years of experience in the healthcare industry and an in-depth knowledge of both state and federal healthcare compliance laws .

 

Prior to his arrival at ASMS, Mr. Zarka served as President and CEO of Option One Home Medical Equipment, Inc., a Corona, CA- based home medical equipment (HME) provider.

 

Mr. Zarka served as Vice President of Operations at Praxair Healthcare Services where he had corporate staff responsibility for a $350 million home healthcare products and services division in the U.S. and Canada. At Praxair he also managed the $90 million home medical equipment, respiratory and infusion therapy division consisting of 28 branch facilities throughout the Eastern U.S. with 600+ employees.

 

 FRANK ZARKA: President and Chief Executive Officer

Prior to joining Praxair, Mr. Zarka served as Chief Operating Officer at Byram Healthcare Centers and Regional Vice President at Apria Healthcare Group.  During his tenure, Mr. Zarka spearheaded several acquisitions and mergers while continuing to manage the P&L for multiple divisions of those organizations.

 

Mr. Zarka received his Bachelor of Science, Biology degree from Santa Clara University, located in Santa Clara, CA.  He has served as Vice President, Treasurer and Board Member of the Washington Association of Durable Medical Equipment Dealers and Vice President of the Washington Association of Infusion Therapy Providers. 

 


S.K. Mostafavi, M.D., F.C.C.P., F.A.A.S.M.: Founder

Physician, Entrepreneur, and a pioneer in the field of sleep medicine, S.K. Mostafavi, M.D., F.C.C.P., F.A.A.S.M., is Founder and Board member of Advanced Sleep Medicine Services, Inc. Dr. Mostafavi has been in the forefront of the field of sleep medicine as an instructor for both major hospitals as well as prominent medical groups in Southern California.

Dr. Mostafavi’s vast knowledge of medicine consists of being Board Certified in multiple specialties including Sleep Medicine, Internal Medicine, and a subspecialty Of Pulmonary Disease.

After earning his Doctorate of Medicine degree in 1980, Dr. Mostafavi completed his internship at St. Barnabas Hospital, in New York. Following his internship, he completed his residency training in Internal Medicine at SUNY Downstate Affiliated Hospitals, in New York, and trained in Neurology at UCLA’s Wadsworth program. Pursuant to this, Dr. Mostafavi completed a Pulmonary and Critical Care fellowship, in addition to a formal Sleep Medicine Fellowship at UCLA and Cedars-Sinai Medical Center. Upon completing his Board Certification in Sleep Medicine in 1992, he became one of the first and youngest formally trained Board Certified sleep specialists in the state of California, and is well recognized as a leader in the field of Sleep Medicine.

S.K. Mostafavi, M.D., F.C.C.P., F.A.A.S.M.: Medical Director and Chairman

Dr. Mostafavi is a Fellow of the American Academy of Sleep Medicine and of the American College of Chest Physicians.

Dr. Mostafavi has taken part in multiple research projects and has published articles in reputable, peer reviewed journals including Chest and Respiration. Dr. Mostafavi is an assistant clinical professor at the UCLA School of Medicine, and is also on the clinical faculty at Cedars-Sinai Medical Center, where he has been placed on the outstanding teaching list. He has also appeared on numerous notable television and radio programs, including KNX 1070, NBC, CNN, KCAL 9, and most recently on NBC’s popular hit show, The Biggest Loser, as the “Sleep Apnea Guru”.


 

Shirisha Janumpally, M.D., A.B.P.N.

 

Dr. Shirisha Janumpally is a board certified neurologist with subspecialty interest in sleep medicine. She is also a member of the American academy of sleep medicine, American academy of neurology and American medical association. She has worked in both academic and community settings as a neurologist and sleep medicine specialist.

 

Dr. Janumpally grew up in southern California. She went to medical school in the Midwest and came back to southern California to complete her training. She completed her internship at Loma Linda University Medical center in Internal medicine. Subsequently she completed her neurology residency and sleep medicine training at University Of California-Irvine (UCI) Medical Center.

During her residency her research focus was on the role of dopamine agonists (which are used to treat restless leg syndrome) in causing impulse control behavior disorders.

Dr. J

 

Following her training she worked as a sleep medicine attending as well as an Assistant Professor of Neurology at UCI medical center. Her clinical interests include sleep related breathing disorders, parasimonies, and circadian rhythm disorders to name a few.

 


R. Mehdian, M.D., F.C.C.P.

Dr. Mehdian is a Board Certified pulmonologist, a member of the American Academy of Sleep Medicine and a fellow of the American College of Chest Physicians.

Dr. Mehdian has had an active practice in Thousand Oaks/ Newbury Park since 2002 where he sees and manages pulmonary and sleep medicine patients at his office. Dr. Mehdian has been active in research in the areas of Critical Care and Sleep Medicine and his research findings have been published in reputable publications such as ‘CHEST’ and ‘Critical Care Medicine’.

Dr. Mehdian completed his undergraduate training at UCLA majoring in Biology and Applied Mathematics. Pursuant to this, Dr. Mehdian attended medical school at New York Medical College where he earned his Doctorate in Medicine degree.

Dr. Ramin Mehdian

Dr. Mehdian subsequently moved back to California to rejoin his family and start his Internship and Residency in Internal Medicine at the prestigious University of Southern California (USC).

Following the completion of his Residency requirements, Dr. Mehdian pursued and completed his fellowship in Pulmonary, Critical Care, and Sleep Medicine at USC.


Karen Cheng, M.D.

Dr. Karen Cheng is board-certified in neurology and is an active member of the American Academy of Sleep Medicine, the American Academy of Neurology, and the California Sleep Society. Dr.Cheng is in private practice in Laguna Hills at the Saddleback Medical Tower and is a medical staff member of Saddleback Memorial Medical Center.

Dr. Cheng attended college at Stanford University, where she graduated with honors in 1999. While at Stanford, she studied neurobiology and dance. Subsequently, she obtained her medical degree at the Medical College of Virginia in 2003. She completed her internship and residency in neurology at UC Irvine during 2003 to 2007. During her training as a neurologist, she studied sleep disorders in patients with neuromuscular conditions.

Dr. K. Cheng

Following her residency in neurology, she sought to subspecialize in sleep medicine and completed a clinical fellowship in sleep medicine from 2007-2008 at Stanford University, which was the site of the very first sleep disorders clinic in the country. While at Stanford, she had the privilege of treating patients with a variety of sleep disorders, including obstructive sleep apnea, insomnia, narcolepsy, restless legs syndrome, and REM-sleep behavior disorder.


Anne Rice, Ph.D., Sleep Medicine Specialist

Dr. Rice is a Diplomate of the American Board of Sleep Medicine and a Fellow of the American Academy of Sleep Medicine. Upon passing her Sleep Medicine board exam in 1992, Dr. Rice served as guest instructor for the board review course at Stanford School of Sleep Medicine, California.

Dr. Rice has also served as board review course guest instructor, for the American Academy of Sleep Medicine in 2007. Dr. Rice did her training in sleep medicine at Sleep Center at UCLA under the supervision of Dr. Donna Arand, a former Board Director of the American Academy of Sleep Medicine, and Dr. Ron Harper, a former President of the Sleep Research Society. Dr. Rice’s graduate work consisted of brain research in relation to homeostasis and learning at UCLA’s Brain Research Institute. Clinical work with children was in the area of behavioral engineering at UCLA’s Psychology Department.

Dr. A. Rice

Dr Rice has extensive experience with neonatal ICU patients, sleep disorders in children, lung disease patients, parasomnia and seizure disorders, neurology patients, cardiac and heart transplant candidate patients. She recently trained and received certification in the field of Clinical Hypnotherapy with emphasis on insomnia.


Alan Jasper, M.D., F.C.C.P.

 

Dr. Alan Jasper is a sleep specialist and board certified internist and pulmonologist.  Dr. Jasper has been a member of the American Academy of Sleep Medicine for more than two decades and is a Fellow of the American College of Chest Physicians and the American College of Physicians. As such, Dr. Jasper is one of the foremost sleep specialists in Los Angeles and has been recognized by his colleagues as one of America’s “Top Doctors” for many years.

 

Dr. Jasper received his bachelor’s degree from Yale University in 1971 and graduated from Georgetown University School of Medicine in 1976. Dr. Jasper’s interest in sleep medicine began during his training years from 1976-1981.  His residency at Penn. State’s Hershey Medical Center provided him with instruction in electroencephalography, while his pulmonary research fellowship at UCLA Medical School furthered his understanding of electromyography, both components of sleep studies.  Dr. Jasper studied several aspects of respiratory control at UCLA and delivered the first introductory lectures on the then “new” topic of sleep apnea in 1979. Dr. Jasper established a sleep laboratory for a UCLA teaching program and consulted and taught there for several years. 

Dr. Jasper

 

Dr. Jasper is in private practice in downtown Los Angeles and is a medical staff member of St. Vincent Medical Center and the Hospital of the Good Samaritan.  Dr. Jasper  treats patients with a variety of sleep issues and in particular those with sleep disordered  breathing disorders.  For an evaluation by Dr. Jasper, please contact his office at (213) 484-2044

 


 

Yurzul Dhanani, M.D., F.C.C.P.

 

Dr Yurzul Dhanani is Board Certified in Internal Medicine, Pulmonary (Respiratory) Medicine and Critical Care Medicine. Dr. Dhanani specializes in the diagnosis and treatment of sleep disorders, in particular sleep apnea, and lung diseases.  

 

Dr Dhanani did his Internal Medicine Residency at Helene Fuld Medical Center in Trenton N.J. and completed his Chief Residency at the same institute in 1984. Dr. Dhanani completed his Fellowship in Pulmonary and Critical Care at the University of California, Irvine Medical Center in 1986.

Dr. Dhanani

 

Dr. Dhanani belongs to the California Medical Association, the Riverside County Medical Association  and  American College of Chest Physicians. Dr. Dhanani is in private practice in Hemet, CA, specializing in Sleep Disorders, Pulmonary and Intensive Care and is currently the Director of Respiratory Care at Hemet Valley Medical Center. Dr. Dhanani is on active staff at Hemet Valley Medical Center and on consulting staff at Menifee Valley Medical Center.

 


Fara Ehsan: Vice President of Finance

A true veteran, Fara has over twenty-five years of experience in healthcare and finance, and has played an instrumental role in building ASMS from its inception in 1994. As the Vice President of Finance, Fara coordinates and manages a team that is responsible for all facets of the billing department. Fara’s vast knowledge of the medical field has contributed to creating and implementing numerous essential symposia, in addition to being the main instrument in acquiring insurance providership from various insurance carriers, including Medicare and Private insurance providership.

Fara Ehsan: Vice President of Finance

Prior to joining ASMS, Fara had functioned as a senior financial consultant for various successful Medical Practices, including Beverly Hills Pain & Diagnostics, Global Medical Diagnostics, Inc., and A & E Medical Corporation.

Fara has a Bachelor’s of Science Degree in Economics, and earned her certification as a Programmer Analyst in Computer DBASE III from Montreal, Canada.

She also continues to expand her knowledge, while keeping informed with the ongoing changes in healthcare and sleep medicine, by attending numerous seminars within the field of billing, collections, and finance.


Ray Omid: Vice President of Business Development and Marketing

Ray Omid has over twenty years of experience in sales, marketing and business development, twelve of which have directly been in the field of sleep medicine. Ray joined Advanced Sleep Medicine Services, Inc. in 1996, as the Vice President of Marketing & Business Development.

Ray has been responsible for the development of the company's sales and marketing strategies, day-to-day operations of the sales and business development organization, public relations, contracting, corporate communications, and general marketing activities, including branding and market analysis.

Prior to joining ASMS, Ray was the Vice President of Sales and Marketing for Resource Management, Inc. (RMI), a company based in Orange County, California, that was involved in the promotion of energy efficient systems to commercial properties and the hospitality industry.

Ray Omid: Vice President of Business Development and Marketing

During his tenure at RMI, Ray landed contracts with some of the biggest names in the hospitality industry, including the Hilton Corporation and Westin Hotels.

Ray earned his Master's of Science degree from the University of Massachusetts Lowell, and his bachelor's of science degree in Physics and Astrophysics from the University of London. Ray’s passion for marketing and sales has also led him to complete many MBA courses in these fields.


Jonathan L. Sherrill, RPSGT: General Manager and Technical Director

Jonathan Sherrill has been actively involved in sleep medicine for over a decade. Jonathan joined Advanced Sleep Medicine Services, Inc. in the capacity of Sleep Lab Director in 2003, and was promoted to General Manager and Technical Director in early 2008.

Throughout his tenure with ASMS, Inc., Jonathan has managed numerous employees, substantially aided in the development of Durable Medical Equipment (DME) services, including the JCAHO accreditation process, and has assisted with company growth.

A Registered Polysomnographic Technologist (RPSGT), Jonathan was among the first group of 5000 people to earn his RPSGT credential; the highest designation available to a sleep technologist.

Jonathan L. Sherrill, RPSGT: Acting General Manager and Technical Director

Jonathan is also a member of the Board of Registered Polysomnographic Technologists (BRPT), American Association of Sleep Technologists (AAST), California Sleep Society (CSS) and the Southern California Society of Polysomnographers.

Jonathan earned his Bachelors of Arts Degree from California State University, Fullerton.

 

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