Executive Team
Joseph Lemaire, Board Member
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Joseph Lemaire is a Certified Public Accountant who received his degree in accountancy from Fairleigh Dickeson University. Over a 35-year professional career Joe was an audit partner at EY overseeing the firms NJ hospital audit practice. In that role Joe grew the practice from 15 hospital audit clients to 43 becoming the largest healthcare practice in the State. In addition, Joe also had responsibility for the health care consulting and tax practices. As part of the consulting practice Joe was involved in over 30 tax exempt bond issues serving as the feasibility consultant and helping to structure the debt facility. Joe was also involved in physician joint ventures, new service development and physician acquisitions. In 2009 Accenture acquired the health care consulting practice of EY and Joe became a partner in Accenture’s life sciences group. In addiction to his hospital work Joe also worked with several large pharmaceutical companies as well as major medical device companies on significant IT implementations and strategic projects
In 2014 Joe joined Holy Name Medical Center as their Chief Financial Officer (CFO). Under Joe’s leadership the hospital’s finance department was completely revamped and the hospitals operating results were returned to profitability. After 5 years at Holy Name Joe joined the Meridian Health System as their CFO. Meridian enjoyed it’s best operating results undoer Joe’s leadership. In 2016 Meridian merged with Hackensack University Health System where Joe assumed the role of President of Hackensack Meridian Health Ventures ( HMHV). HMHV encompassed all the non-acute care business’s of HMHV which included the long term care division, home care, surgery centers, dialysis centers and all the other health related joint ventures including 7 free standing radiology sites
Joe retired in May 2021 and has since joined the board of several private equity owned health care related companies. Joe continues to stay active in the health care industry speaking at events and providing strategic consulting advice to clients
Laura Cogar, COO
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Laura Cogar, Chief Operating Officer, is a seasoned healthcare executive with over 30 years of experience in diagnostic imaging ranging from clinical, research, business development, operations, finance, and physician recruiting. Ms. Cogar has had experience dealing with private, academic, investor owned, and publicly traded entities in growing and developing diagnostic imaging services including acquisitions and de novo sites and service lines. She served as Vice President of Operations for American Radiology, a for-profit radiology practice with 12 hospital contracts, 20 outpatient offices, and a teleradiology company. In this role, she also worked with minority owner Johns Hopkins to expand their outpatient imaging reach to 7 locations around Baltimore, Washington D. C. and Delaware. She then was the COO for Templeton Readings, a national teleradiology company that was bought by Emcare(Envision). In addition to extensive hospital and outpatient operations, Ms. Cogar has experience in all aspects of practice infrastructure such as board reporting, human resources, risk management, recruitment, strategic planning, and developing and leading executives and managers across all service lines for diagnostic and interventional radiology services. She has extensive experience in developing and training healthcare professionals. Ms. Cogar earned her B.S. from Thomas Jefferson University and her MBA from Widener University
Carolyn Zodl, VP Teleradiology and IT Services
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In 2011, Carolyn was hired at Advanced Radiology Solutions (ARS) as Vice President, after a successful, 24-year comprehensive career in healthcare administration holding positions of Director of Cardiopulmonary, VP of Diagnostic Services, and IT Project Manager. Carolyn received her MPA from Seton Hall University in 2004. This wealth of knowledge combined with her 13 years of project management experience in healthcare IT system implementations including an entire clinical health system conversion from ‘paper’ to full Hospital Information System and Radiology, PACS, LAB, EMR, ER and HL7 integrations, along with her strong team building, mentoring and employee development skills have proven to be the perfect fit to ‘grow’ a Teleradiology Company. Carolyn’s operational/technical leadership and her ability to integrate systems, improve workflow efficiencies, manage multiple projects, build and maintain strong client relationships, continues to contribute to ARS’s significant growth in annual study volume, revenue, client base, system integrations and overall workflow efficiencies.
Sandra Gras, VP Outpatient Services
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Sandy joined Advanced Radiology Solutions as the Regional Director of Operations in 2021 and has been in the radiology industry for more than 30 years. Sandy brings a wealth of experience managing all aspects of multiple outpatient imaging centers with a proven track record of improving customer service levels, volumes, revenues, and reducing expenses. She also has experience with mergers, acquisitions and working with multiple hospital joint ventures. Sandy has worked for several local radiology practices including URG and is very familiar with the local diagnostic imaging landscape. Sandy also oversees marketing and opened up the OBL this year. Sandy studied business administration at Atlantic Community College in the 1990’s.

James Frazzetta, CFO
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Jim is the Chief Financial Officer for Coastal Administrative Group, LLC and joined the Company in June of 2024. Jim has spent the last 32 years working in various accounting positions within the Healthcare sector at the Administrative / Management Service Organization (“MSO”) level. His experience is vast and has taken him into various specialties such as Diagnostic Radiology in the outpatient diagnostic imaging center space to cardiology, vascular surgery, primary care, ophthalmology and dental sectors. Jim was instrumental in the corporate reorganization of SightMD back in 2018 and has served in key roles during his career in assisting healthcare companies through major reorganization transactions (both debt and equity).
He has interacted with all levels of management, built effective teams and has fostered constructive and efficient relationships in and outside the organizations that he has served. His knowledge and experience has allowed him to accumulate a wealth of knowledge and proficiency in all aspects of business including but not limited to:
- Accounting, finance and tax
- Human resources and payroll management
- Purchasing and vendor relations,
- Revenue cycle management
- Information technology
- Marketing and business development
- Business acquisition and integration
- Insurance and risk management
Jim graduated from the University at Albany with a bachelor of science degree and started his career at Touch Ross & Co (now known as Deloitte) where he was an auditor and became a NY State Certified Public Accountant
Interventional Radiologists

Peter S. Doss, M.D.
Medical School: University of Texas
Residency: Westchester Medical Center, New York Medical Center
Fellowship: Harvard Medical School
Specialty: Interventional Radiology
Christopher J. Moran, M.D.
Medical School: New York Medical College, Valhalla, NY
Residency: Mount Sinai St. Luke’s Roosevelt Hospital
Fellowship Training in Vascular and Interventional Radiology
Specialty: Interventional Radiology


Nicholas A. Perosi, M.D.
Medical School: Ross University School of Medicine
Residency: Yale-New Haven Hospital
Fellowship: Johns Hopkins Hospital
Specialty: Interventional Radiology
Jan Skrzypczak
Medical School: Jefferson Medical College
Residency: Morristown Medical Center
Fellowship: St Luke’s /Roosevelt Hospital Center
Specialty: Interventional Radiology


John P. Swidryk, M.D.
Medical School: New York Medical College
Residency: Allegheny University Hospital
Fellowship: Vanderbilt University Medical Center
Specialty: Diagnostic Radiology, Vascular & Interventional Radiology
David G. Wirtshafter, M.D.
Medical School: Rutgers Medical School
Residency: Albert Einstein Medical Center
Fellowship: Columbia Presbyterian Medical Center
Specialty: Interventional Radiology


Thomas Yu, MD, President/CEO
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Dr. Thomas Yu is a board-certified radiologist who received his medical degree from the University of Medicine and Dentistry of New Jersey – Robert Wood Johnson Medical School, Cooper Medical Center. Dr. Yu is fellowship trained in vascular and interventional radiology. Under the leadership of Dr. Thomas Yu, MD, Coastal Administrative Group grew from 2 hospitals, a teleradiology company, and one outpatient center to 8 hospitals, 4 full modality outpatient imaging centers, an officebased lab, and a multi-state Joint Commission Accredited teleradiology company. Dr. Yu’s business acumen along with his strategic vision has guided company growth as well as built a solid business
infrastructure to carry the growth of the company and entrepreneurial endeavors. Dr. Yu has ensured that quality patient care and the highest service levels are always top priority and never sacrificed with the growth of the company. Coastal Administrative Group and all of our related companies are physician led and supported by a very seasoned executive and management team that Dr. Yu has built over the last 15 years.
Breast Imaging

Judy Atallah, D.O.
Medical School: New York College of Osteopathic Medicine
Residency: Nassau University Medical Center
Fellowship: North Shore University Hospital
Specialty: Breast & Body Imaging
Bharathi Batchu, M.D.
Residency: Newark Beth Israel Medical Center
Fellowship in Body MR: Yale University School of Medicine
Specialty: Breast Imaging


Alicia Daniels, M.D.
Medical School: Jefferson Medical College
Residency: Albert Einstein Medical Center
Fellowship in Body MR: Thomas Jefferson University Hospital -Breast Imaging
Specialty: Breast Imaging
Raven DeVincenzo, M.D.
Medical School: Stoney Brook School of Medicine, NY
Residency: Montefiore Medical Center
Fellowship: Cross Sectional Imaging, Yale University School of Medicine
Specialty: Musculoskeletal Imaging, Body Imaging, Breast Imaging


Frederick J Zito, M.D.
Medical School: UMDNJ – Newark, NJ
Residency: Diagnostic Radiology, St. Vincent‘s Medical Center, Bridgeport, CT
Fellowship: Nuclear Medicine/Body Imaging/Breast Imaging; Saint Barnabas Medical Center, Livingston, NJ
Specialty: Nuclear Medicine, Body Imaging, Breast Imaging
Body Imaging
Joshua Kellerman, M.D.
Medical School: UMDNJ Robert Wood Johnson Medical School
Residency: Temple University Hospital, Philadelphia, PA
Fellowship: Thomas Jefferson University Hospital
Specialty: Radiology, Abdominal Radiology


Patrick O’Connor, D.O., Ph.d
Medical School: UMDNJ- SOM, Stratford NJ
Residency: Harlem Hospital , New York, NY, Morristown Memorial Hospital
Fellowship: Morristown Memorial Hospital
Specialty: Body Imaging
Charles Saniewski, M.D.
Medical School: University of Rome
Residency: Hackensack University Medical Center
Fellowship: University of Miami/Jackson Memorial Hospital
Specialty: Interventional Radiology, Breast Imaging, PET/CT, Body Imaging, Thyroid Therapy.


Kevin Willis, M.D.
Medical School: UMDNJ Robert Wood Johnson Medical School
Residency: Rhode Island Hospital
Fellowship: University of Pennsylvania
Specialty: Diagnostic Radiology, Body Imaging
Robert E. Wold, M.D.
Medical School: UMDNJ- Robert Wood Johnson Medical School
Residency: Diagnostic Radiology, New York Medical College, Valhalla, NY
Fellowship: Body Imaging, New York Medical College, Valhalla, NY
Specialty: Diagnostic Radiology, Body Imaging

Neuroradiology

Jeffrey C DiPaolo, M.D.
Medical School: Thomas Jefferson Medical School
Residency: Bryn Mawr Hospital
Fellowship: University of Michigan
Specialty: Neuroradiologists
Francesco Florio, M.D.
Medical School: University of Medicine and Dentistry of New Jersey
Residency: Hahnemann University Medical Center
Fellowship: University of Pittsburgh Medical Center
Specialty: Neuroradiology and Interventional Radiology


Arkady Finkel, M.D.
Medical School: Penn State College of Medicine
Residency: Temple University Hospital
Fellowship Training in Vascular and Interventional Radiology: Hospital of the University of Pennsylvania (UPHS)
Specialty: Diagnostic Radiology, Radiology – Neuroradiology
Charlee Feeney, D.O.
Medical School: Kirksville College of Osteopathic Medicine
Residency: Morristown Memorial Hospital
Fellowship: Beth Israel Medical Center
Specialty: Neuroradiology


Leo Fontana, M.D.
Medical School: Eastern Virginia Medical School
Residency: University of Medicine and Dentistry of New Jersey (UMDNJ)
Fellowship Training in Neuroradiology: Columbia Presbyterian Medical Center
Specialty: Neuroradiology
Edward Rittweger, M.D.
Medical School: University of Medicine and Dentistry of
New Jersey (UMDNJ)
Residency: Montefiore Medical Center/Albert Einstein College of Medicine Bronx, NY
Specialty: Neuroradiology


Paul Y. Shieh, M.D.
Medical School: Brown University – School of Medicine
Residency: Cooper University Hospital
Fellowship: Thomas Jefferson University Hospital
Specialty: Diagnostic Radiology
Muscular Skeletal Imaging
Mark Singer, M.D.
Medical School: University of Medicine and Dentistry of New Jersey (UMDNJ)
Residency: New York University Medical Center
Fellowship Training in Musculoskeletal Imaging and Body Imaging: New York University Medical Center
Specialty: Musculoskeletal Imaging, Body Imaging, PET/CT.


Harshada Thaker, M.D.
Residency: L.G.Hospital, NHL Medical Center
Fellowship: Maimonides Medical Center
Specialty: Musculoskeletal Imaging
Kevin Willis, M.D.
Medical School: UMDNJ Robert Wood Johnson Medical School
Residency: Rhode Island Hospital
Fellowship: University of Pennsylvania
Specialty: Diagnostic Radiology, Body Imaging

Nuclear Medicine/PET Imaging

Charles Saniewski, M.D.
Medical School: University of Rome
Residency: Hackensack University Medical Center
Fellowship: University of Miami/Jackson Memorial Hospital
Specialty: Interventional Radiology, Breast Imaging, PET/CT,
Body Imaging, Thyroid Therapy.
Frederick J Zito, M.D.
Medical School: UMDNJ – Newark, NJ
Residency: Diagnostic Radiology, St. Vincent‘s Medical Center, Bridgeport, CT
Fellowship: Nuclear Medicine/Body Imaging/Breast Imaging; Saint Barnabas Medical Center, Livingston, NJ
Specialty: Nuclear Medicine, Body Imaging, Breast Imaging

