Meet Our Team

The entire South Bay Vascular Center & Vein Institute team is dedicated to connecting with patients on a personal level and providing compassionate care. Our diverse staff includes members who are fluent in English, Spanish, Vietnamese, Korean, Russian, Hindi, Mandarin, Tagalog, Greek, and French.

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Dr. Polly Kokinos

General and Vascular Surgeon
Registered Physician in Vascular Interpretation (RPVI)

Dr. Polyxene (Polly) Kokinos founded South Bay Vascular Center & Vein Institute in 1997. She is Board Certified in both General Surgery and Vascular Surgery and has dedicated her entire career to serving the South Bay community as an independent physician—so she can deliver truly personalized, patient-centered care.

Dr. Kokinos has been recognized by her peers as one of the pre-eminent vascular surgeons in Northern California and an overall leader in her field. She has served as the chair of the Cardiovascular Surgery department at the Columbia Good Samaritan Hospital in San Jose and as the medical director for the wound care centers at O’Connor Hospital in San Jose and Saint Louise Hospital in Gilroy.

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Yelena Bishop

Physician Assistant

Yelena is a certified Physician Assistant who works with Dr. Kokinos to deliver sophisticated medical care that addresses both the mind and body. Yelena’s qualifications exceed those of most physician assistants; she completed medical school and residency at Moscow Medical Academy (one of the most prestigious medical schools in Russia), and then relocated to the U.S., where she graduated from Stanford School of Medicine Physician Assistant Program. Her extensive medical experience, coupled with a gentle and professional demeanor grounded in personal family values, make her a valuable addition to the South Bay Vascular team.

Debbie Hoover

Registered Vascular Technologist (RVT)
Registered Diagnostic Medical Sonographer (RDMS)

Debbie has been a Registered Vascular Technologist (RVT) since 1992 and a Registered Diagnostic Medical Sonographer (RDMS) since 1996. She has previously served as a clinical instructor at UC San Diego and Technical Director at Good Samaritan Hospital, where she helped obtain the prestigious Intersocietal Commission for the Accreditation of Vascular Laboratories (ICAVL) Accreditation in 5 specialties (Cerebrovascular, Peripheral Venous, Arterial, Visceral and Transcranial). She is currently the Technical Director for Vascular Associates of Northern California (AC accredited in 4 specialties) and the Institute for Vascular Testing, where she is overseeing the current accreditation.

Dolores Meehan

Nurse Practioner

Dolores Meehan has been an RN for 8 years and recently completed her graduate degree from UCSF as an Acute Care Nurse Practitioner. She has worked with South Bay Vascular Center since April 2015, when we first opened our angiography suite, and will now begin working with patients in her expanded role as a Nurse Practioner. In addition to working as a nurse at SF General Hospital, Dolores travels regularly to Nigeria and Gabon as a medical missionary. She is looking forward to working with Dr. Kokinos as an Advanced Practice Nurse. She is a proud 4th generation San Franciscan and spends her free time open water swimming in the SF Bay.

Sandra Ballestrasse

Registered Nurse Critical Care (RN)

Sandra is a registered nurse with over 18 years experience in critical care, including neurosurgical intensive care and trauma. Sandra joined SBVC in 2019 and is focused on providing exceptional care to patients undergoing arterial and vascular surgery procedures.  When she is not at work, she coaches elementary/middle school robotics and enjoys playing tennis and spending time outdoors with her family.

Marlia Seiden

Registered Nurse (RN)

Damarcus Moon

Radiology Manager, RT(R)

Arnold (Damarcus) Moon was born in Pittsburgh, PA and raised in Los Angeles. He obtained his certification as a Radiology Technologist in the U.S. Army. He later earned a  B.A. degree in English Literature from CSU Dominguez Hills and is currently pursuing a Master’s degree in Clinical Psychology. In his spare time, Damarcus enjoys reading science fiction, writing, and listening to music. 

Dante Licup

Registered Vascular Technologist (RVT)

Dante is a Registered Vascular Technologist (RVT) and has been with South Bay Vascular since 2014. He is also licensed in General and OB/GYN sonography. On the weekends, he enjoys driving by the coast with his family.

Patrick Kim

Ultrasound Sonographer
Registered Vascular Technologist (RVT)
Registered Diagnostic Medical Sonographer (RDMS)

Patrick received his RVT and RDMS certifications from Gurnick Academy of the Arts and works as a registered diagnostic medical sonographer. He enjoys spending time with his three children, going to the gym, and playing golf.

Vera Ostroumova

Ultrasound Sonographer
Registered Vascular Technologist (RVT)
Registered Diagnostic Medical Sonographer (RDMS)

Vera worked as a Medical Doctor in Russia for over 20 years prior to coming to the United States for her children to attend university.  After arriving in the U.S. Vera returned to university and received a Bachelor of Science degree in diagnostic imaging at Lincoln University. Vera is credentialed both as a Registered Vascular Ultrasonographer as well as a Registered Diagnostic Medical Sonographer. In her spare time Vera enjoys hiking and yoga.

Sandhya Sheth

Medical Assistant

Sandhya has been a certified Medical Assistant since 2012. She handles the back office role of taking patients to their room, preparing them for procedures, and assisting the medical team during procedures. Sandhya also discusses pre- and post-operative care and instructions with patients. In her spare time, Sandhya loves to read, garden, cook, and spend time with friends and family.

Sarah Cole

Medical Assistant / Medical Scribe

After graduating from UC Berkeley with a degree in Integrative Biology, where she also played on the indoor and beach volleyball teams, Sarah spent 2 years at a genetics-based health technology startup and 2 years scribing in the ER at Good Samaritan Hospital in San Jose, CA. She has been with South Bay Vascular for the past year and will be starting medical school at Florida Atlantic University in the fall. In her spare time, Sarah enjoys volunteering, coaching, competing in tournaments, and painting. 

What Sarah has to say about her experience at South Bay Vascular: 

“My time at South Bay Vascular has taught me so many invaluable lessons about how to provide innovative, patient-centered care, and I cannot imagine starting my journey into medicine without this experience. Dr. Kokinos, Yelena, and the entire team at South Bay Vascular are not only phenomenal clinicians but excellent mentors who are invested in the health of their patients and the success of their colleagues. I feel so fortunate to have had the opportunity to learn from the very best.”

Vicki McCartney

Office Manager

Vicki has over 13 years of experience working in vascular care and joined South Bay Vascular in 2014. She checks in all patients, answers phones, and schedules appointments. In her free time, she likes to be with her kids and her granddaughter and take long rides to the beach.

Vi-Van Nguyen

Patient Care Coordinator

Vi-Van is a recent graduate from U.C. Berkeley, where she majored in Molecular Biology. She is currently applying to medical school. In her free time, Vi-Van likes to play tennis, go on hikes, and experiment with new recipes. She has recently been interested in finding creative ways to make coffee.

Claudia S.


Claudia has been doing medical billing for over 20 years. She enjoys spending her spare time with her husband, her two boys, and her two “fur babies.”

Tommy Seamen

Assistant Practice Coordinator

Tommy has worked South Bay Vascular since 2017 and currently manages a variety of office projects. He is a current junior at the University of Pennsylvania studying Nursing and Business. In the future, Tommy hopes to combine his interests in clinical medicine with healthcare management. He is a Spinning Instructor at school and loves spending time outdoors.

Kelly Sheehi

Medical Gap Year Intern

Kelly worked as a medic in the U.S. Army National Guard while earning her bachelor’s in Animal Science at Cal Poly SLO. She completed the ROTC program and volunteered training service dogs until she graduated in June 2020. Kelly continues to serve in the military and is currently applying to physician assistant school. She enjoys competing with her horse, going on road trips, and taking her Dalmatian to the beach.

Jonah Holbrook

Medical Gap Year Intern

Jonah graduated with a degree in Biomedical Engineering from Cal Poly SLO in Spring of 2020, and he is currently in the process of applying to medical school. Durig his time at Cal Poly, Jonah was active as the president of the Medical Design Club and as an on-campus researcher in the field of point-of-care diagnostics. In his free time, Jonah enjoys hiking, golfing, and exploring national parks. Jonah is thrilled to be embarking on the gap year medical assistant program.

Grace Souza

Billing Supervisor

Grace has over 30 years of experience in billing. She enjoys gardening, traveling and spending time with her husband and new grandson. Grace is fluent in both English and Spanish and is happy to assist our Spanish speaking patients understand their insurance and benefits. 

"I would highly recommend this office to anyone concerned about vascular issues, cosmetic or otherwise. Great staff all around."

– SBVC patient

"Dr. Kokinos is a great surgeon, and I trust her completely. The office personnel are always pleasant and helpful."

– SBVC patient