SCHENECTADY, N.Y.
Jul 14, 2004

Trac Medical Solutions, Inc. (TracMed), a subsidiary of Authentidate Holding Corp. (Nasdaq:ADAT), announced today that it has signed an agreement with Pacific Pulmonary Services of Novato, California to enable Pacific Pulmonary to electronically complete Certificates of Medical Necessity (CMN's) and Written Orders using the TracMed CareCert(TM) Solution.

Founded in 1978, Pacific Pulmonary Services specializes in home oxygen therapy equipment and services, nebulizers and respiratory medications. Pacific Pulmonary will initially begin its rollout of the CareCert Solution in Southern California.

"TracMed's eCMN solution offers physicians and their staff a quick and efficient means to complete the documentation required for the Medicare patients we serve," Said Jim Doty, Vice President Marketing, Pacific Pulmonary Services. "TracMed's system appears to be a win for our physician offices and Pacific Pulmonary Services."

"We are please to add Pacific Pulmonary Services to the growing list of CareCert users," Authentidate Chairman and CEO John Botti said. "They are established leaders in the home respiratory therapy industry and we believe this solution will bring additional operating efficiencies to their organization."

About Authentidate Holding Corp.

Authentidate Holding Corp. (AHC) is the holding company of five business units; DocStar, Authentidate International AG, Authentidate, Inc., DJS Marketing Group/Computer Professionals International and Trac Medical Solutions, Inc. DocStar sells proprietary document imaging software that includes the Authentidate technology. Authentidate and Authentidate AG provide the authentication of digital data through its proprietary and patent pending technology. Authentidate intends to establish itself as the authority on "content security" as it is a growing sector of the electronic network security infrastructure market. DJS delivers professional services centered around technology systems integration projects, staff augmentation, out-tasking, outsourcing services and resells computer related products. Trac Medical offers an electronic form processing solution and utilizes the Authentidate technology to prove the authenticity of the content represented in completed healthcare forms.

About Pacific Pulmonary Services

Founded in 1978 in Bakersfield, California under the Med-Mart name, the Company provided all types of durable medical equipment (DME) to the general public. The company was purchased by a private group of investors in 1993 and began the transformation to Pacific Pulmonary Services. Over the next few years Pacific Pulmonary Services shifted from a generalist DME business to focus specifically on home respiratory therapy.

This press release contains forward-looking statements within the meaning of section 27A of the Securities Act of 1933 and section 21E of the Securities Act of 1934. When used in this release, the words "believe," "anticipate," "think," "intend," "plan," "will be," "expect," and similar expressions identify such forward-looking statements. Such statements regarding future events and/or the future financial performance of The Company are subject to certain risks and uncertainties, which could cause actual events or the actual future results of the Company to differ materially from any forward-looking statement. Such risks and uncertainties include, among other things, the availability of any needed financing, the Company's ability to implement its business plan for various applications of its technologies, the impact of competition, the management of growth, and the other risks and uncertainties that may be detailed from time to time in the Company's reports filed with the Securities and Exchange Commission. In light of the significant risks and uncertainties inherent in the forward-looking statements included herein, the inclusion of such statements should not be regarded as a representation by the Company or any other person that the objectives and plans of the Company will be achieved.

SOURCE: Authentidate Holding Corp.