Meet the team behind Flossbar


Eva, Founder & CEO

Eva comes from a small town in Poland and the mean streets of Brooklyn. After graduating from Harvard in 2012, Eva worked for Bridgewater Associates, the largest hedge fund in the world. Eva dreamed up Floss Bar when she noticed how complicated it was to get a basic dental care without taking 3 hours off of work or getting offered multiple extra services. Upon further research, she realized that over 80% of Americans have gingivitis, and that the rates of those with preventable dental emergencies was consistently rising. In 2018, Eva put her Wharton MBA on hold to build Floss Bar into a household name.  Eva's goal is to improve the expedience, cost, and accessibility of health and beauty services - making others both internally and externally beautiful.

E-mail Eva


Joshua David Perry, President

Experienced international entrepreneur & operator for business-side oral to overall health services

USA - Led restructure & expansion from Silicon Valley only business to a nationwide business; 30x growth through horizontal expansion into comprehensive mobile healthcare. Expanded client base to private practice, outreach, and government-military services.

Denmark - Danish Startup: started an entrepreneurial venture after achieving international EMBA; Developed an innovative new approach to mobile healthcare and convenient services for varying size employers; Successful acquisition by Denmark's largest private healthcare provider

Ireland - Started Irish-domiciled business with global reach. by partnering with USA/IE/UK best workplaces for work-health/life-balance initiatives. Focusing on an integrated services approach


Deirdre Epps, director of operations

Deirdre, an Air Force Veteran, brings 20 years of dentistry and operations management experience to her role as Director of Operations. Deirdre has successfully managed multiple practices and has been instrumental in collaborating with staff and colleagues to meet goals and provide optimum patient care. Her expertise encompasses team building, process improvement and coaching staff on exceptional customer service. In her spare time, she enjoys crafting and traveling abroad.


Aleksandra (Albi) Sadej, VP Patient Experience

Albi is the former Nurse Manager at one of the largest integrated clinics in a well renown FQHC in New York State. She has a Bachelor’s of Science in Nursing from Stony Brook University in Long Island and completed an Adult and Gerontology Nurse Practitioner Degree at Hunter-Bellevue School of Nursing. She has been dedicated to providing quality health care for the past 9 years. 

During  this time she has demonstrated and developed her natural leadership abilities, management style and exceptional organizational skills. She is especially talented at recognizing and supporting an individual’s natural strengths and  then inspiring them to work towards mutual goals.  Her passion for health care and undeniable prowess are being extended to Floss Bar where she works as the Vice President of Patient Experience to support the innovation in making oral health available to all.


John harrison, vp of logistics

John is from small town, Defuniak Springs, Florida, but currently living in Leesville SC. He is married with four beautiful children and eight wonderful grandchildren living in North Caroline and West Virginia. He enjoys spending time with family and friends, and outdoors, gardening, boating, and fishing.

He is versatile executive healthcare leader with a combine experience of 35 years in the military and civilian sector with the ability to balance strategic decisions and financial discipline. Devoted with a hands-on approach to leadership and exceptional results with strong employee, patient, and physician engagement and satisfaction. His experience in leadership roles such as in Air Force Inspection Agency, Air Force Reserve Command and Chief, Base Medical Services at National Aerodynamic Testing Facility. Worked closely with civilian agencies including AAAHC, Joint Commission, and Department of Veteran Affairs Medical Centers. Engaging communicator and relationship builder with expertise in organizational planning, multimillion-dollar capital projects, contract negotiations, team development, and increasing visibility for growth. His passion is to ensure the delivery of High Quality Healthcare through exceptional customer experiences in clinical settings.


Cheryl phillips, Client relations Manager

Cheryl Phillips brings to Floss Bar numerous years of experience working in the fields of both general dentistry and oral surgery with over a decade in delivering these services in a mobile setting. This passion grew into a love for helping people being able to smile again, being taken care of with compassion with some of the best providers in the area. It all started out with a little direction and quenching my thirst for knowledge through Pensacola Junior College in Pensacola, FL right out of high school. Cheryl has volunteered her time on many occasions to help those that are less fortunate to obtain quality dental care through churches and schools.

Being a native of NW Florida with acquaintances all over and a huge sphere of influence, Cheryl gained her FL Realtors License and later obtained her FL Real Estate Brokers License, helping people achieve their dreams of owning their own home but continually stayed active in the field of dentistry.

Cheryl likes to work closely with people, building relationships and forming everlasting friendships. Her hobbies are spending time outdoors doing anything, loving on her fur babies and grandchildren as well as entertaining. A good book is something she likes to do but rarely takes the time for. Her artwork reflects her creative side.

Cheryl’s motto is ‘everything happens for a reason’ and feels blessed to be a part of Floss Bar and its growing entity.


Kristeen Polanco, Client Relations Administrator

Kristeen is an enthusiastic, hard working and dedicated team player who has spent the last 11 years working in an administrative role. A paralegal by degree, Kristeen spent almost 5 years at Swope Rodante, a law firm committed to representing plaintiffs against corporate giants, dedicated to winning life changing verdicts for very deserving clients. More recently she was an Executive Assistant to multiple c-suite level executives at Laser Spine Institute. She played a pivotal role at the company in many aspects; both in supporting those making decisions for the company, building relationships with clients and patients alike and also supporting the employees; by playing a very active role on the event team and engagement committee, where she went above and beyond to make work life fun, planning and executing events both large and small!

Kristeen was born in Petoskey, Michigan but has lived in the small town of Zephyrhills, Florida since infancy. She and her husband enjoy small town living and raising four children in the same place she grew up; they also have chickens and goats! There are not too many people that Kristeen comes in contact with that she doesn't immediately form a friendship with. She is always smiling, loves to laugh and loves even more to make those around her smile and laugh. Her passion for helping those around her makes her excel in administrative roles!


Dr. Ryan Lee, DDS, MPH, MHA, FAGD, FICO, Lead Dentist, Director of provider relations

Dr. Ryan Lee is a dental oncologist (private practice) and Professor (NYU) trained at NYU and Memorial Sloan-Kettering Cancer Center. He is also a health policy/public health analyst focusing on outcome disparities. His former management consultant experience includes advising Fortune 500 pharma, telecom, and IT firms. Specialties:

1. Health Policy & Management -- health disparities research, socio-medico-behavioral analysis, outcome variability demographics, oral-systemic linkages

2. Dental Oncology -- dental management of cancer patients (e.g., w/radiation, chemo, tranplants), outpatient and OR dentistry, special-needs patient care, Invisalign certification

3. Management Consulting -- healthcare, pharma, telecom, and higher educational sectors: growth strategies, positioning, M&A, new opportunities assessment 

“Floss Bar is an innovative company and a welcome disruptor in the world of oral health, where access to care and efficient delivery models are still lacking. By focusing on technology and creative partnerships, it is leading the pack in the field of mobile dentistry, and I’m ecstatic to be part of it.” - Dr. Ryan Lee, DDS


Donna Moreschi, Lead Hygienist, provider relations manager

Donna is a Licensed and Registered Dental Hygienist and the Lead Hygienist of Flossbar. She is an active member of the American Dental Hygiene Association and is certified in CPR and Advanced Cardiovascular Life Support. She graduated from Briarwood College with a certificate in Dental Assisting, and went on to work In Montefiroe Medical Center Department of Dentistry. There she had the opportunity to work with some of the top accredited dentists and Oral Maxillofacial surgeons in New York State. This is where her passion for dentistry developed and she decided to further her education at New York University.  


theresa rivera, recruitment/hr and compliance manager

Theresa is an industry expert with more than 20 years of successful experience in working in Finance, Healthcare Management, Personnel Management, Compliance and Quality. She has a proven ability to foster relationships with C-Suite and senior executives for IT, Operations, Accounting, and Finance and Compliance.
Theresa knows that people hire people, not resumes. Companies are not just looking for a set of qualifications that match a job description. To ensure a complete match, Theresa extensively interviews both companies and candidates to find out who they are and what they are looking for — as companies and as people.
Theresa is most fulfilled when helping people to grow professionally. Her vision and ability to nurture relationships lead to long-term solutions and success.
Theresa will makes sure to work collaboratively with the FlossBar team in seeking recruiting and sales strategies that strengthen overall operations and result in accelerated revenues and savings.
Finally it is Theresa’s passion about all aspects of healthcare and working with people who want to make its delivery to the people easier, affordable and effective that makes her a perfect new member of the FlossBar team.

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Jon Eskow, legal advisor

Jon is a rare breed lawyer/entrepreneur hybrid with great experience in both the legal and startup worlds.  He started his career at a large law firm, proceeded to co-found a venture-backed software company and most recently founded his own law firm.  Having grown up in a family of dentists, he has a unique understanding of both the limitations and opportunities that exist within the current dental ecosystem and brings a unique perspective to the team.  Jon leads the Floss Bar legal team and is also involved in company strategy.  Jon is a graduate of Brandeis University and Cardozo Law School and currently lives in Boston with his wife and kids.


charles wayne sheffield, asset and logistics associate

Wayne is from Mobile, Alabama currently residing in Cleveland, Tennessee. He is a single father with two beautiful children. he loves spending time with family and friends with a true passion for all things outdoors to include hunting, fishing, kayaking, hiking and camping.

He is an experienced and knowledgeable medical training professional with a combined experience of 28 years in the military and civilian sector as a skilled instructional designer with proven leadership and management skills. He graduated from Southern Illinois University, Carbondale with a BSM in Work Force, Education and Training. His strengths include strong interpersonal communication skills, problem solving, organizational skills, customer service orientation expert with outstanding work ethic. His desire is to provide world class healthcare to our clients and patients with proof shown one beautiful smile at a time.


flora gregorich, rda, operations Associate

Flora started working for Floss Bar (called Xsite Health at the time) in October, 2017.  She enjoys the challenges of coordinating complex projects and is excited about opportunities in the new Floss Bar organization!

 Flora is responsible for a wide range of activities in her region, including two continuously-served customers (Box in Redwood City and Cadence in San Jose), as well as various special events in the Western USA (Los Angeles, San Francisco, Denver, Las Vegas, etc.).  Key responsibilities for her job include:

  • Back office duties such as assisting the dentist, sterilizing instruments, taking x-rays and preparing trays

  • Front office duties such as scheduling patients, coordinating treatments, verifying eligibility and benefits, documenting billing and reminding patients

  • Operation associate duties such as event set-up, break-down, resolution of technical issues and inventory maintenance

 She graduated from Carrington College in September, 2016 as a Dental Assistant with Expanded Functions and has been a Certified Dental Assistant by the Dental Assisting National Board. She obtained her Orthodontic Assistant Permit in November 2017 from Dental Specialties Institute, and is a Registered Dental Assistant in California as well as most other states. Prior to Floss Bar she worked at a private dental practice in the Bay Area, and before she moved to the Health Care industry she worked for 5 years as an Operations Technician in a large electronics company in Taiwan.

 Flora was born in the Philippines and speaks several dialects of Filipino. She likes travelling, trying new foods and listening to music. In her spare time she enjoys hiking and biking, and recently she started kayaking.


Zoë Marsh, Marketing Associate

Zoë is a tech-savvy marketer with a customer service background and a passion for digital media. Zoë graduated from Pace University’s Lubin School of Business with a BBA in Global Marketing Management and a minor in Art. She lives for anything that involves being simultaneously creative and strategic, and in her spare time she runs a vintage shop on an online platform. Zoë is inspired to contribute to the continuous innovation that today’s fast-paced lifestyle calls for. And since Floss Bar is doing just that, she feels her job is a perfect fit.


Kendra davis, rda, operations associate

A graduate of Atlanta Technical College EEDA Dental Assisting, Kendra has been an RDA by the Dental Assisting National Board for 19 years. She is an active member of the American Dental Assistants Association and is certified in CPR & Advanced Cardiovascular Life Support. Currently pursuing her Master of Science in Healthcare Management at Georgia Perimeter College.


Richard Calvin phillips, logistics associate

Calvin Phillips is a well-rounded team member for Floss Bars Logistics team. He brings to Floss Bar his years of experience working in the delivery of mobile dental and health services to people abroad. He can and does go above and beyond what is expected.

Diverse in mechanics, he holds knowledge and certification of DOT criteria, works well with all groups of people and knows a lot about a lot. He’s able to facilitate the repair of most problems encountered and can get what you want where you want it when you want it.

Calvin holds great leadership skills and is always showing pride in his work. He holds past experiences to include foreman and supervisory positions in machinery, and vehicles.


Dr. John Aston, DMD, NYC Partner

As our NYC favorite dentist, Dr. Aston has been with us from the beginning as a champion making the dental experience comfortable and high quality for our fixed location clinic in Midtown.

"Floss Bar was integral in helping me build a patient base at a new location in Midtown…Where are the New Yorkers hiding? They are at work, just like I am. Floss Bar ensures the employees keep up with their preventative care, brings me in to identify risk, and gets them the treatment they need — at their workplace when I’m back or by scheduling them with my practice. It makes it easy and flexible for everyone." – Dr. John Aston, DMD


Jeremy Krell, DMD, MBA, Advisor

Jeremy is an experienced healthcare entrepreneur and dentist. He holds a BS in Biology, Chemistry, and Business from Brandeis University, a DMD from Tufts University, and a MBA from University of Chicago. Jeremy has advised, started, led, and worked for startups in the dental, medical, health insurance, venture incubation, e-commerce, and web and graphic design industries. During his free time, Jeremy enjoys watching and playing tennis, spending time with his family, and has a penchant for pugs.


Melissa Turner, BASDH, RDHEP, Advisor

Drawing from an energetic personality and an ability to build strong relationships, Melissa works within the dental vertical to improve patient experience and access, to help navigate the impending dental industry shift from a traditional model to a gig-economy mindset, as well as to address cultural changes that come with the rising Millennial workforce and consumer base. With a track record of service within both developing and seasoned organizations, her focus in program development and strategy, team management, and public relations enables organizations to stand out and communicate clearly. As a natural leader and unique perspective as a Registered Dental Hygienist, Melissa's driving force is to empower business leaders and dental practice owners to understand that effective leading--and effective business growth--first begins deep within the individual leader. Other expertise includes mobile dental care delivery, teledentistry, workplace wellness, dental therapy, as well as increasing the role and responsibility of the dental hygienist as part of the primary care team.