Doctors and Physician Assistants you can trust

We believe our patients come first and providing them with the highest quality of healthcare is our top priority.

Our high quality of healthcare starts
with our providers.


Steven Richardson
Physician Assistant

Mr. Richardson has been practicing for over 9 years as a Physician Assistant. He attended Western University School of Medicine and obtained his post graduate residency in Internal Medicine at Arrowhead Regional. He has been providing high quality health care for DOC in a Box for over two years. He currently provides his services for California.



Ginger Krentz
Nurse Practitioner

Ginger is a Nurse Practitioner with almost 10 years of experience in Emergency and Urgent care settings, as well as in Cosmetic Medicine and Weight Loss. Ginger is passionate and focused on helping her patients achieve the highest level of wellness possible, through a holistic approach. She treats each person as an individual and believes an Integrative approach to western medicine, paying close attention to diet, lifestyle, and supplementation paves the way to wellbeing. Ginger is committed to ongoing professional education and development at the highest level to ensure continuing, outstanding patient care. She regularly attends and participates in conferences, keeping up to date with the latest research, to support and enhance patient care. She currently provides her services for California,Arizona, California, Colorado, Florida, Maine, Nebraska, Nevada, New Mexico Oregon, Texas and Washington.


Jennifer Hwang
Medical Doctor

Dr. Jennifer Hwang graduated from Michigan State University College of Osteopathic Medicine. She finished her Internal Medicine residency training at Botsford Hospital in Michigan. She currently provides her services for Michigan, Hawaii, Wisconsin, and Colorado.


David Filsoof
Medical Doctor

Dr. Filsoof has been in practice for over 10 years and is Board Certified in Internal Medicine. He attended New York Medical College and obtained his post graduate residency at The University of Texas Houston. After completing his Fellowship in Cardiology at Cedars Sinai, he serves as DOC in a Box Medical Director for California, Texas, and Florida.


Andreas Grossgold
Medical Doctor

Dr. Andreas Grossgold is an Internist and Pediatrician who graduated from the University of Texas Medical School in Houston. He is originally from Bogota, Colombia and grew up in North America, South America, Europe and Israel. Dr. Grossgold is a lieutenant with the US Navy reserves. He attended the New Granada Military School of Medicine where he obtained his Medical degree and completed his internship and residency doing rotations at Memorial Hermann Hospital, MD Anderson Hospital, St Luke Episcopal, LBJ General Hospital, Children’s Memorial Hospital and Texas Children’s Hospital. He also completed a 4 year Doctorate program at Capital University of Integrative Medicine in Washington D.C and a 5 year postdoctoral fellowship at Baylor College of Medicine in Cell Biology and Gene Therapy with emphasis in Neurosciences and Cardiovascular Genetics. Dr. Grossgold is an author and co-author of more than 30 peer reviewed articles, abstracts, posters and book chapters on clinical and bio-medical research. He is a former Postdoctoral Fellow Association President at Baylor College of Medicine and has been recognized with several awards and grants for his research work on Prostate and Bladder Cancer in collaboration with scientists and physician scientists in urology, medical oncology, and molecular biology. Dr. Grossgold practices Internal Medicine and Pediatrics with an integrative approach on nutrition, functional and anti-aging medicine. He is currently affiliated with Morton Plant Hospital and Countryside Mease Hospital’s All Children’s Hospital with John Hopkins Medicine.


Estrella Guerrero

Nurse Practitioner

Estrella is a Nurse Practitioner with over 10 years experience in the Adult and Pediatric Emergency setting, Family Practice, and Urology Specialties. She is passionate about learning and always looking for ways to increase her knowledge and that of her patients. She treats her patients as if they were her own family and provides the highest level of care and respect. She attended California State University of Fullerton and obtained a Master’s degree from Simmons College. She is fluent in Spanish and currently studying American sign language. She currently provides her services for California.

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Steven Connell
Pharmacist and Physician Assistant

Mr. Connell is a registered Pharmacist and Physician Assistant. During his 12-year career in medicine, Steven has worked in many specialties including surgery, emergency medicine, internal medicine, pediatrics, and geriatrics medicine. Mr. Connell also still works as a pharmacist dispensing and educating healthcare professionals and patients on medications as well as consulting for several health organizations and overseeing 340b drug pricing program for several rural clinics. Mr. Connell is a proud alumni of Touro College and Touro University. He currently provides his services for California.


Michell Mulberry
Nurse Practitioner

Michell Mulberry is an Adult Nurse Practitioner who has practiced in New Jersey as well as Florida, and has been practicing medicine since 2011. She graduated from Rutgers’ The State University of New Jersey initially, and then Walden University where she received her doctoral degree in 2018. She is now residing in Gainesville, FL with her husband and two young adult children. Michell enjoys caring for her patients and strives for excellence. She currently provides her services for Florida.


Erica Parrish
Nurse Practitioner

Erica Parrish-Valdez FNP-C, brings over 10 years of combined medical experience. She received her undergraduate degree from Mount Mercy University in 2007, and later graduated from the University of Iowa in 2012 obtaining a master’s degree (MSN), specializing in family practice. . She has spent much of her career practicing in a level 1 trauma center and various urgent care settings, caring for all patient populations.
Erica’s passion for holistic care, encompasses an emphasis on health promotion, disease prevention, and health education. She has a commitment to leadership, advocacy, and support of her current profession, currently credentialed and an active member of the American Academy of Nurse Practitioners (AANP).


Susan Gillispie
Nurse Practitioner

Susan is a Family Nurse Practitioner with 6 years experience in family practice and urgent care setting.  Susan is passionate about providing the best possible care to her patients. Susan is currently working on her doctorate degree and is passionate about evidence-based care. Susan is committed to furthering her education and knowledge base through continuing education classes and conferences to enable to her stay current on the best practices to enhance patient care.She currently provides her services for Oregon and Washington.


Lynn Henderson
Nurse Practitioner

Lynn Henderson graduated from Purdue University in 1982 with a degree in sociology and a minor in psychology. After graduating, she worked as a Clinical Social Worker in the Department of Child and Family Services. She graduated in 1994 with her Bachelor of Science in nursing from Valparaiso University, and worked at various positions. These positions included long-term care, hospice, IV infusion therapy, home care and credentialing services for several major insurance companies. In 2004, Lynn graduated as an Adult Nurse Practitioner and began her career in primary care. She has also worked in geriatrics, home care and managed care. Lynn is married, and has one daughter. One of her best friends is her pet Lakeland Terrier Clive. Lynn enjoys camping, fishing, boating and traveling. Getting extreme satisfaction out of caring for others and being a lending ear when others need help and support is very fulfilling for Lynn. Lynn's plans for the future are to camp, fish, relax, and enjoy the great outdoors. Lynn also volunteers at her local church and helps seniors and homeless in her community. She currently provides her services for Arizona.


Victoria Oberzil
Nurse Practitioner

Victoria is a board-certified PA who trained at Oregon Health Sciences University and graduated in 2011. She has been practicing for over 7 years in Internal Medicine and also teaches at the school of medicine at OHSU.

Her special interests include geriatric care and improving access to healthcare by use of technology. She provides services in Oregon and California.


Amisha Bhakta
Physician Assistant

Amisha Bhakta PA-C earned her Master of Science degree in Physician Assistant Studies at Baylor College of Medicine in Houston, Texas.  Amisha is certified by the National Commission on Certification of Physician Assistants and has been practicing medicine for over 10 years.  She has experience working in Family Practice, Internal Medicine, and Endocrinology.  When not working, she enjoys spending time with her family, watching sports, and exercising. She currently provides her services for California.


Patrick Vickers
Medical Doctor

Dr. Vickers is originally from Florida and attended Florida State University and graduated with a Bachelor’s of Science in Exercise Physiology. He received his medical degree at the Edward Via College of Osteopathic Medicine Virginia Campus and completed his internal medicine residency program at Danville Regional Medical Center. He worked as an Internist / hospitalist at Southside Regional Medical Center in Petersburg Virginia for two years. Dr. Vickers was appointed to an Infectious Disease Fellowship in 2017 and is working as an Infectious Disease physician at Sentara Norfolk General Hospital in Norfolk Virginia. He currently provides his services for Florida, New York, North Carolina, Pennsylvania, Tennessee and  Virginia.