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Company Overview

American Diagnostic Corporation (ADC) is one of the world’s premier manufacturers of diagnostic medical products, personal instruments, and accessories for the healthcare industry. For 40 years we’ve been dedicated to designing, manufacturing, and supplying stethoscopes, blood pressure instruments, and other core diagnostic products that provide an unmatched value proposition with a purchase experience that is second to none.

Mission Statement

To produce feature-rich, ruggedly built, value-priced professional diagnostic medical instruments for the healthcare marketplace while maintaining a stable, dependable employment environment for our associates and trading partners.


Bringing together their knowledge of the medical device industry and its needs, Marc Blitstein and Neal Weingart co-founded ADC in 1984. They shared a vision of a company built on long-lasting partnerships with the best component manufacturers in the world, while committing to significant production and quality processes in the United States. The result is a company that's flexible, enterprising, and more able to work with vendors and customers.  


Our products are marketed under many brands, including ADC®, Medicut™, Adscope®, Proscope™, Diagnostix™, Prosphyg™, Adtemp™, Multikuf™, Adlite™, Pocket Pal™, Responder™, Adcuff™, System 5™, Adflow™, Adview®, E-Sphyg™, and Adimals®. We also manufacture products under original equipment manufacturer (OEM) and private label contracts for more than a dozen of the world's leading manufacturers and distributors in the acute care, alternate site, nursing, extended care, student, and EMS markets. In fact, ADC is the largest privately held branded and private-label supplier of stethoscopes and blood pressure instruments in the United States. Our products are sold on six continents, in over sixty countries, and are in use by thousands of healthcare institutions and millions of healthcare professionals worldwide.


Today, our 44,000-square-foot facility in Hauppauge, New York, houses our corporate offices, customer service, quality control, manufacturing, and distribution departments. Sales offices in London, England, and Tokyo, Japan, service our European and Pacific Rim distribution. Additional quality control and sourcing offices in Taipei, Taiwan, and Ningbo, China, oversee ADC's Asian manufacturing facilities. 

Key Milestones

ADC founded in January 1984 as a direct marketer of emergency medical supplies, operating out of a 700-square-foot storefront in Copiague, New York
1985   Hired our first full-time employee
Relocated to a 4,000-square-foot facility in West Babylon, New York; hired our first developmentally disabled employee
Opened sourcing office in Tokyo, Japan
1990   Produced the first sphygmomanometer aneroid gauges with luminescent dials
Voted one of the Top 25 Fastest Growing Firms on Long Island by accounting firm KPMG
Opened quality/sourcing office in Taipei, Taiwan; shifted much of the Japanese stethoscope component production to Taiwan
Began sourcing sphygmomanometer components from Indonesia
1994   Launched the Adscope line of premium stethoscopes
Relocated to our present-day headquarters in Hauppauge, New York, then with 35,000 square feet of space
Shifted gauge production from Japan and Taiwan to China in exclusive agreement with Nissei
Registered the ADC trademark in the U.S.
Began sourcing digital blood pressure instruments and thermometers from China
Started second-shift production at Hauppauge facility
Marc Blitstein named by Newsday, Long Island's daily newspaper, as one of their inaugural Everyday Heroes for his employment of the developmentally disabled
2004   Hired our 100th employee
2005   Launched the E-Sphyg, the first and only virtually indestructible digital aneroid sphygmomanometer
Blitstein named to Long Island Volunteer Hall of Fame for his work with the developmentally disabled
Frost and Sullivan named our digital stick thermometer line the best in the industry
Awarded Acute Care Supplier of the Year (Small Company Category) by the Health Industry Distributor's Association
Awarded ISO 9001:2000 and ISO 13485:2003 quality certification. One of only two companies in our class to hold these quality marks
Expanded Hauppauge facility to 44,000 square feet
2008   Introduced the Adimals line of pediatric scopes
2009   Entered the fingertip pulse oximetry market with our Diagnostix 2100
Opened ADC Ningbo, a three-person quality/sourcing office in Ningbo, China
Launched the ADView, the first modular diagnostic station (blood pressure, temperature, SpO2) in a joint venture with SunTech Medical
2011   Re-engineered our entire blood pressure line to be completely latex-free
2011   Incorporated Microthread technology into our Adflow valves for improved deflation control
2012   Launched our re-imagined retail program to support our brick-and-mortar retailers
2012   Introduced the Adscope 606, the world's first ultra-lightweight cardiology stethoscope
2013   Launched our completely redesigned website and published a dozen product videos
2014   Celebrated our 30th anniversary in business
2014   Launched our Designer Series print cuffs, Cuffs for a Cause, our fifth generation of Advantage Home BP monitors, and a bariatric cuff -- an industry first
2014   Launched our expanded line of Diagnostix™ and Adstation 3.5v EENT instruments
2014   Upgraded the Adscope line with new packaging, laser engraving, and Adsoft Plus snap-on silicone eartips
2014   ADC Ningbo becomes an FDA registered facility
2015   Moved final production of 700 items to the U.S.
2016   Launched the ADView 2 modular diagnostic station and our re-engineered line of Adcuff SPU blood pressure cuffs
2016   Redesigned our product labels to be UDI compliant, as much as two years ahead of schedule
2016   Launched a line of Pro's Combo Plus super-premium professional scope/sphyg sets
2017   Launched our PMV 3.5v Otoscope and doubled the EENT offering to over 1200 SKUs
2017   Opened a new office In the UK to support our European expansion
2017   Entered into a joint venture to open a manufacturing facility in Suzhou China
2018   Launched the Adscope LE limited edition line of decorated stethoscopes in 21 models
2018   Worldwide employment tops 160
2018   Finalist in the HIA-LI Large Employer of the Year
2019   Celebrated our 35th Anniversary
2019   Launched the e-sphyg 3 NIBP monitor
2020   Winner of the HIA-LI Large Employer of the Year