May 1, 2018

Annapolis, MD, April 2018 – Anne Arundel Dermatology Management (“ADM” or the “Company”), a portfolio company of New MainStream Capital (“NMS”), announced today that it has partnered with Tideway Dermatology, P.A. (“Tideway”). Founded in 1994, Tideway has been serving the general and surgical dermatology needs of Northern Maryland for over 20 years.

Tideway is led by board-certified dermatologist Dr. David Jaffe and has locations in Havre de Grace, Maryland and Bel Air, Maryland. Dr. Jaffe will continue to lead Tideway and further build upon ADM’s density in Maryland and will now benefit from the administrative support provided by Anne Arundel Dermatology Management.

“We are very excited about partnering with Dr. David Jaffe and expanding into the Northern Maryland market. We continue to execute on our strategy of building density in Maryland, which has been a focus of ours for the last several years. We continue to look for exceptional partnership opportunities such as the Tideway affiliation,” said Scott Mahosky, Chief Executive Officer of ADM.

Dr. David Jaffe commented, “Anne Arundel Dermatology truly takes a partnership approach and that differentiates them from other dermatology groups in the area. Anne Arundel Dermatology and our practice understand the importance of clinical quality and putting the patient’s needs first and that was critical to us in selecting a group to partner with.”

David Peterson, Principal at NMS, added, “The affiliation with Tideway marks ADM’s twelfth affiliation since NMS’ investment in 2015 and we are thrilled to welcome Dr. Jaffe and his practice to the ADM platform. Dr. Jaffe has built a leadership position in an underserved market in Northern Maryland and we look forward to supporting him and his practice through their next phase of growth. This is the third of four affiliations that ADM had under LOI at year-end and expected to complete in the first half of 2018. We anticipate the fourth affiliation to close in May.”

As part of the affiliation, Tideway will benefit from ADM’s extensive administrative and support services, including investments in information technology and electronic medical records, revenue cycle management, payer credentialing and contracting, compliance and reporting, human resources, business development and finance.

About Anne Arundel Dermatology

Anne Arundel Dermatology is a leading provider of dermatological services in Maryland, Virginia and Tennessee. Headquartered in Severna Park, Maryland and with 40 locations and 94 providers, ADM is the largest dermatology practice in Maryland and East Tennessee providing a comprehensive suite of dermatologic services, offering general dermatology, advanced treatment options for skin cancer and cosmetic procedures. For additional information on Anne Arundel Dermatology, visit

About New MainStream Capital

New MainStream Capital is a New York headquartered private investment firm specializing in strategic equity investments and leveraged buyouts of lower middle market companies. The Firm was formed through the spin-out of a group of portfolio companies from the Goldman Sachs Merchant Banking Division. NMS focuses on companies headquartered in the U.S. poised to benefit from sustainable growth trends with particular concentration on companies in Healthcare Services and Specialized Business Services. For additional information on NMS, visit


Scott Mahosky
Anne Arundel Dermatology Management, LLC

Susan Pieper
VP of Business Development and Integration
Anne Arundel Dermatology Management, LLC

David M. Peterson
New MainStream Capital