Eleni D. Roumanas , D.D.S.

Photo of Eleni D. Roumanas D.D.S.
UCLA School of DentistryThe Weintraub Center for Reconstructive Biotechnology Work Box 951668, CHS B3-087 Los Angeles CA 90095-1668

Dr. Roumanas completed her BS degree at UCLA and received her DDS degree from Northwestern University, Chicago.  Postgraduate training included General Practice Residency (UCLA 1989), Advanced Prosthodontics Residency (UCLA/VAMC 1991), Maxillofacial Prosthetics Residency (UCLA 1992).  She joined the faculty at UCLA School of Dentistry in 1992 as Assistant Professor and Director of Maxillofacial Prosthetics at the City of Hope National Medical Center.  In 1995 she was awarded a mid-career Fellowship in Geriatric Medicine and Gerontology.  She served as Chair of the Section of Removable Prosthodontics from 2002-2006, Co-Director of Maxillofacial Prosthetics from 1995-2010 and Director of Advanced Prosthodontics  2006-2012.

Dr. Roumanas is a Diplomate of the American Board of Prosthodontics and a fellow of the Academy of Prosthodontics.   She was elected and has served on the Board of Directors for the American College of Prosthodontists and the International Society for Maxillofacial Rehabilitation.  Dr. Roumanas currently serves on the Editorial Review Boards for the Journal of Prosthodontics and the Journal of Prosthetic Dentistry.


“Deformities of  the head and neck region resulting from cancer treatment, congenital malformation or traumatic injuries can be devastating on  physical structure and function  and  frequently result in severe compromises in quality of life.  Rehabilitation is a complex process best  achieved through a multidisciplinary approach combining advanced surgical and  prosthetic reconstructive procedures.   One of our goals at the Weintraub   Center is to evaluate the outcomes  of various treatments through randomized clinical trials and  develop   new novel approaches that will further push the envelope.”

Honors and Awards:

  • 2009 Diplomate-American Board of Prosthodontics
  • 2009-2010 Board of Directors- American College of Prosthodontics
  • 2006-2011 National Board Prosthodontics Test Construction Committee
  • 2006 Teaching Award, Class of 2006,  UCLA School of Dentistry
  • 2005 Teaching Award, Class of 2005,  UCLA School of Dentistry
  • 2005-2010 Fulbright Senior Specialist
  • 2003 Certificate of Appreciation of Teaching, Class of 2004, UCLA
  • 2002 “Faculty Recognition Award”, Class of 2002, UCLA School of Dentistry

Research Interests:

Deformities of the head and neck region resulting from cancer treatment, congenital malformation and traumatic injuries can be devastating on physical structure and function and frequently result in severe compromise in quality of life.  Rehabilitation is currently a complex process best achieved through a multidisciplinary approach combining advanced surgical and prosthetic reconstructive procedures.  Our goal at the Weintraub Center is to evaluate the outcomes of these treatments through randomized clinical trials and develop new approaches that will further push the envelope.  Dr. Roumanas’ research focuses primarily on clinical outcomes in implant prosthodontics and maxillofacial prosthetics.

Dr. Roumanas a member of the Oral Rehabilitation Outcomes Network (ORONet).  An international multicenter group focused on standardized and comprehensive evaluation of comparative effectiveness of therapies of oral rehabilitation.

Dr. James P. Sellas

Photo of Dr. James P. Sellas
Oral and Maxillofacial Surgery Work 1875 Business Center Drive Suite 101 San Bernardino CA 92408 USA Work Phone: 909-884-4754 Website: Dr. James P. Sellas

University of Southern California 1983-1986
Certificate of Completion, Residency Oral and Maxillofacial Surgery Emphasis on Facial Trauma, Orthognathic Surgery and Anesthesia

University of Southern California School of Dentistry
Certificate in Oral and Maxillofacial Surgery

Loma Linda University of School of Dentistry 1979-1983
Doctor of Dental Surgery, Graduated Cum Laude Top 5%

Board Certified State of California 1983

Cal State University 1978-1980

University of California, Irvine BS in Biology 1974-1978

Marsh Robinson Society of Oral and Maxillofacial Surgeons Speaker: “Total TMJ Reconstruction” Resident Presentation

American Association of Oral and Maxillofacial Surgeons Speaker Award Presented June 1983

Omicron Kappa Upsilon Award 1983

Preclinical Basic Science Award: Recognition for Outstanding Achievement, Excellent Motivation and Attitude Toward Learning

Demetria Skiada, MD

Photo of Demetria Skiada, MD
LA County + USC Medical CenterAcute Care Surgery and Surgical Critical Care Work 2051 Marengo Street, IPT, C5L100 Los Angeles CA 90033 Work Phone: (323) 409-7761 Work Fax: (323) 441-9909



Dr. George K. Spanos

Photo of Dr. George K. Spanos
Kaiser Permanente South Bay Work 25825 Vermont Avenue Harbor City CA 90710 Work Phone: 800-780-1230

While I was born in Austin, Texas, my family is originally from Athens, Greece. I spent the majority of my childhood in Athens, and I am fluent in Modern Greek. After finishing at an American high school in Athens, I came back to the United States for college at Duke University. I returned to Texas for medical school, where I met my wonderful wife. We moved to California, where I attended residency and fellowship at USC, specializing in breast and body imaging. We have been happily enjoying the weather here ever since.

My personal philosophy is to deliver high-quality care to members as if they were part of my family.

I absolutely love to play the electric guitar, particularly the blues. I also enjoy live music and traveling. Most importantly, I enjoy spending time with my wife and family.

Medical school Description: The name and location of the university where the practitioner received medical education and a degree.
Baylor College of Medicine
Houston, TX

Medical training Description: The residency, internship, and other programs the practitioner has completed.
Transitional Year
Harbor-UCLA Medical Center
Torrance, CA

Diagnostic Radiology
LAC+USC Medical Center
Los Angeles, CA

Diagnostic Radiology
LAC+USC Medical Center
Los Angeles, CA

Board certification Description: A specialist who has completed an approved residency program in an approved specialty.
Diagnostic Radiology
American Board of Radiology

Dr. Nick M. Spirtos

Photo of Dr. Nick M. Spirtos
Women’s Cancer Center of NevadaDivision of Gynecologic Oncology Work 3131 La Canada St., Suite 241 Las Vegas NV 89169 Work Phone: 702.693.6870

Nick M. Spirtos, M.D. is the Medical Director of the Women’s Cancer Center of Nevada, the largest group of gynecologic oncologists in the state. Dr. Spirtos is one of 18 physicians in his family and did his fellowship in gynecologic oncology at Stanford University. He remained on the full-time and clinical faculty at Stanford from 1987 until he moved to Las Vegas in 2005.  He served as the Director of the Division of Gynecologic Oncology at the University of Nevada School of Medicine from 2005 until 2010 and now is an Adjunct Clinical Professor there.

Dr. Spirtos has authored over 60 peer-reviewed publications and has written numerous chapters in internationally renowned textbooks. He serves on many editorial boards and was recently named the first American Editor of Bonney’s Textbook of Gynaecologic Surgery, which has been in continuous publication since 1911.

The Women’s Cancer Center of Nevada is also the only full-member institution in the Gynecologic Oncology Group (GOG) in Nevada and has been one of the leading institutions in this co-operative group. Dr. Spirtos serves as the Chairman of the Gynecologic Oncology Committee in the GOG as well as being a member of the Uterine Corpus Committee. He has previously served on the Ovarian Cancer Committee as well as the Membership Committee. On behalf of the GOG, Dr. Spirtos authored or co-authored almost every article in the field of minimally invasive surgery. He has developed many of the procedures used today in minimally invasive surgery and was one of the first gynecologic oncologists certified in robotic surgery. Along with Dr. Scott Eisenkop, Dr. Spirtos has written many of the landmark papers regarding the role of surgery in the treatment of advanced ovarian cancer.

Recently he was named to the University Medical Center Advisory Board. He and the Women’s Cancer Center of Nevada were featured on 60 minutes due to their commitment to the care of patients who had lost their ability to be cared for by the County Hospital (UMC).

Dr. Spirtos has twins, Alexandra and Michael who are studying Medicine and Law respectively. Dr. Spirtos spends most of his time off writing, lecturing, or traveling with his family.

Sotiris Tetradis , DDS

Photo of Sotiris Tetradis DDS
General Dentistry Work 10833 Le Conte Ave. Los Angeles CA 90095 Work Phone: 310-825-5634 Work Fax: 310-825-5634 Website: David Geffen School of Medicine

Sotirios Tetradis, D.D.S., Ph.D. is a professor and the chair of the Section of Oral and Maxillofacial Radiology in the Division of Diagnostic and Surgical Sciences at the UCLA School of Dentistry. He also serves as an advisor to the combined D.D.S./Ph.D. program in oral biology. “To create knowledge, educate bright students, participate in patient care, and be in the forefront of technologic advances are exciting qualities of an academic career. UCLA offers the perfect combination of all in my clinical and research interest areas

Christos E. Thanos , DDS

Photo of Christos E. Thanos DDS
Private PracticePediatric Dentistry Work Thanos & Dalis, DDS 1122 Crenshaw Blvd. Torrance CA 90501 Work Phone: 310-783-0428 Website: Thanos & Dalis

Dr. Thanos was born in Athens, Greece. His first visit to the United States was in 1964 when he was invited as an American Field Service Exchange Student. He went on to attend Franklin and Marshall College in Lancaster, Pennsylvania as a Fulbright Scholar, one of the highest academic honors a student can earn.

In 1971, Dr. Thanos received his dental degree from the University of Athens, Greece. For the next two years he continued advanced studies at the University of London, England where he specialized in pediatric dentistry at the Eastman Dental Hospital. In 1973, Dr. Thanos was a postdoctoral scholar at the UCLA School of Dentistry where he furthered his studies in biomaterials science and pediatric dentistry. He completed his fellowship and received certificates in both pediatric dentistry and cranio-facial genetics at UCLA Harbor Hospital.

In 1977, Dr. Thanos joined the faculty of the University of Southern California School of Dentistry. He served as a chairman of the department of Advanced Pediatric Dentistry from 1979 to 1985. During that period, he initiated the Specialized Clinic of Esthetic Dentistry where he served as director until 1992.

Dr. Thanos is not only a gifted dentist, he is also a respected scientist in his field and has published numerous research monographs. He is considered a pioneer in the field of esthetic dentistry. He has been participating in the Torrance community for over thirty years.

Dr. Nicholas J. Thanos

Photo of Dr. Nicholas J. Thanos
Physician The Center for Women’s HealthMenopausal Management, Urinary Incontinence, Minimally Invasive Surgery, Natural Herbal Treatment Alternatives Work 2262 N. State College Blvd Fullerton CA 92831 USA Work Phone: (714) 990-2900 Work Fax: (714) 990-3133

Dr. Nicholas Thanos, “Dr. Nick” to his patients, has been working in the women’s health field for over 30 years.  As a Board Certified specialist in Obstetrics and Gynecology, Dr. Nick has lived and worked in Orange County since he established Center for Women’s Health in 1983.  His strong interest in teaching still regularly draws him back to U.S.C. where he is a former Clinical Professor in Obstetrics and Gynecology.  His interest in issues affecting women’s health has taken on speaking engagements throughout the country.  He has done extensive research in the area of minimally invasive surgery leading him to be among the first physicians in the country to be certified in this specialized field of Gynecology.  Dr. Nick currently resides in Fullerton with his lovely wife, Victoria and their adorable daugther.  He credits his father, John Thanos, M.D., for teaching him the “art” of medicine.  “As a country doctor from Wisconsin, Dad taught me how to take care of people, not diseases.  These were the kind of things no one told you about in medical school.”

Areti Tillou , MD

Photo of Areti Tillou MD
Ronald Reagan UCLA Medical CenterSurgery Work Ronald Reagan UCLA Medical Center 200 Medical Plaza Driveway #430 Los Angeles CA 90024 Work Phone: (310) 794-7788 Website: UCLA Health


UCLA General Surgery Suite 200
UCLA Medical Plaza, Suite 214
Los Angeles, CA 90095

Surgery, American Board of Surgery, 2003, 2011
Surgical Critical Care, American Board of Surgery, 2003

Trauma, LAC + USC Medical Center, 2001 – 2003
Surgical Critical Care, Tulane University School of Medicine, 2000 – 2001
Surgery, Baylor College of Medicine, 1996 – 2000
Surgery, Baylor College of Medicine, 1995 – 1996
Surgery, Baylor College of Medicine, 1994 – 1995
Medical Degree
MD, University of Athens Medical School, 1989

Nick J. Tripodes, DDS

Photo of Nick J. Tripodes, DDS
Nick J. Tripodes, D.D.S.Dentist Work 200 S El Molino Ave # 2 Pasadena CA 91101 Work Phone: (626) 795-0297

Dr. Nicolas Vardiabasis

Photo of Dr. Nicolas Vardiabasis
Riverside County Regional Medical CenterOrthopaedic Surgery Residency Work 26520 Cactus Ave Moreno Valley CA 92555 Work Phone: (951) 486-4698 Website: Riverside County Regional Medical Center Orthopaedic Surgery Residency

E Mike Vasilomanolakis , MD, FACC, FACP

Photo of E Mike Vasilomanolakis MD, FACC, FACP
Director of Cardiology and Chief of Staff Community Hospital of Long Beach; Assistant Clinical Professor, Western University of Health Sciences Community Hospital of Long Beach, Long Beach Memorial Medical Center, Los Alamitos Medical CenterCardiology Work 1760 Termino Avenue Suite 314 Long Beach CA 90804 Work Phone: 562-494-3547

E. Mike Vasilomanolakis MD, is a past president and current secretary of the Hellenic-American Medical and Dental Society of Southern California.

He is an Interventional Cardiologist in Long Beach. Dr Vasilomanolakis trained at the University of Illinois Medical School with residency training in Internal Medicine at Rush Presbyterian-St Lukes Medical Center. His cardiology training was at the University of California Irvine.

He is currently Chief of Staff and Director of Cardiology at the Community Hospital of Long Beach. He is an Assistant Clinical Professor at the Western University of Health Sciences. Dr “Mike” is a serial recipient of the “SuperDocs” designation in the Los Angeles Magazine.

He is a Grammy Winning Executive Music Producer.

Dr. Nicolas Vlachakis

No Photo Available
Work 2378 Tanoble Drive Altadena CA 91001 Work Phone: (626) 794-8874

Dr. Nicolas Vlachakis is a podiatry (foot & ankle medicine) specialist in Altadena, CA. He attended medical school at the University of Athens Faculty of Medicine.

Clinical Specialties & Interests

    • Podiatrist: General Podiatric Practice

    Education & Medical Training Mount Sinai School of Medicine Residency, Internal Medicine

    • University of Athens Medical School

    Certifications & Licensure

    • CA State Medical License1977 – 2015
    • American Board of Internal Medicine Internal Medicine


Dr. Katrina Vlachos

Photo of Dr. Katrina Vlachos
Board Certified Physical Medicine & Rehabilitation Work 13160 Mindanao Way Suite 300 Marina del Rey CA 90292 USA Work Phone: 310-574-0400 Website: DISC Sports & Spine Center

Dr. Katrina M. Vlachos is a board certified doctor of physical medicine and rehabilitation who specializes in preventative orthopedic health and rehabilitation. She focuses on a conservative, non-surgical treatment of orthopedic and neurological disorders with an emphasis on exercise-based approaches. In addition, she offers patients who suffer from chronic tendonitis and other musculoskeletal injuries the treatment of PRP (Platelet Rich Plasma Therapy) that use platelets, which are naturally found in blood, to help speed up tissue healing.

Dr. Vlachos also employs alternative techniques and medications to restore function and improve quality of life. She has over 10 years of experience working closely with orthopedic and neurological surgeons.

At the University of California, Irivne, Dr. Vlachos was a member of the Women’s Division I volleyball team for four years. She graduated in 1991 with a B.S. in biological sciences and subsequently attended the St. Louis University School of Medicine. In 1995, she graduated Summa Cum Laude and was nominated to the prestigious Omega Alpha Medical Honor Society. Following an internship at Harbor-UCLA Medical Center, she completed her residency in physical medicine and rehabilitation at the University of Michigan Health Systems.

As a former scholar-athlete, Dr. Vlachos is dedicated to alleviating pain brought about by any sports-related injury. She emphasizes preventative orthopedic health programs embracing a multi-disciplinary approach to treat pain and educate on body mechanics and strengthening to maintain a pain-free status.

Cleo T Williams , MD

Photo of Cleo T Williams MD
Work 960 East Green Street, Suite 208 PASADENA CA 91106 Work Phone: 626-449-4944

Cleo T. Williams has been practicing family medicine along with clinical and anotomical pathology since 1993. She is on the medical staff of Huntington Hospital in Pasadena and Methodist Hospital in Arcadia. She also teaches medical students and nurse practitioners and speaks English, Greek and Spanish.

Dr. Williams finished her undergraduate studies at the University of Salamanca in Spain and is a graduate of USC Medical School.

Dr. Williams offers medical care to the entire family – she has some that span three or four generations!  She prides herself on sincerity and cares for each patient as if they are a member of her own family. She provides preventative medicine to people of all ages and to both male and female genders.

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