Plainly, one has to wonder what "an USA based" means. Does "USA based" mean a physical presence in the US? Coalesce purports to be located at 33 Market Point Dr, Greenville, SC 29607, USA, +1-718-543-9362. Flagship Commercial rents virtual offices there. For $99 a month, you get "Flex Space, Lounge, Live Receptionist, Mailing Address and Collection, Wi-fi, Access (8:30-5:00), Coffee, and Access to printer/copier/scan/fax. Conference Rooms and Day Offices at $15 hour." Whoever is behind the website registered the Coalesce domain name through Godaddy's Domains By Proxy. The only editorial board listed on the website has no U.S. members.
[UPDATE 30 August 2019: As "Smut Clyde" comments below, the profiles of key employees on Linked In indicate that Coalesce is operating from Hyderabad. Akhil Srikanth, the company's "Social Media Executive" came to Coalesce from "OMICS International Conference," where he was "Business Development Executive."]
The journals do not yet exist -- at least, not if a journal is a collection of articles released in distinct issues and volumes. There are journal pages within the one website. These include "Guidelines Instructions for Authors" and a tab for "issues" that has a drop-down menu of "Articles in Press," "Current Issue," and "Archive." The titles of the journals are "International Journal Of Psychological Research And Medicine," "Modern Journal Of Medicine And Biology," "Journal Of Neurological Studies," and the "Journal Of Public Health Care." The first three have no editor, no editorial board, and no articles. The fourth has an editorial board (without an editor in chief) and one article in press, from authors in the Department of Physical Education and Sport Sciences, Faculty of Literature and Human Sciences, Lorestan University, Khoramabad, Iran. This article acknowledges that "[t]he results described in this paper were part of student thesis."
The Flaky Academic Conferences blog has some information on Coalesce's conference spam.