Title: 1) Owner; 2) Owner; 3) Owner; 4) Owner
Company: 1) 3rd Street Diner; 2) Oak Mar Motel; 3) Oakland Motel; 4) Callis Enterprise LLC
Location: Oakland, Maryland, United States
Devin G. Callis, Owner at 3rd Street Diner, Owner at Oak Mar Motel, Owner at Oakland Motel, and Owner at Callis Enterprise LLC, has been recognized by Marquis Who’s Who Top Business Owners for dedication, achievements, and leadership in the Service, Hospitality and Landscaping Industries.
Mr. Callis’s career is marked by an unwavering commitment to his community and a passion for providing welcoming spaces through his business ventures. A serial entrepreneur, he has been managing several successful businesses since 2022, following a distinguished tenure in corporate management. As the owner of 3rd Street Diner, Oak Mar Motel and Oakland Motel in Oakland, Maryland, Mr. Callis manages daily operations across multiple locations, oversees restaurant and motel staff, handles customer service responsibilities and regularly works alongside his team as a servant leader. His approach is hands-on and comprehensive, ensuring that every guest experience is impeccable.
Notably, 3rd Street Diner is known for fostering cherished memories among patrons, a quality Mr. Callis attributes to his own formative experiences dining with family in similar settings. Additionally, both the Oak Mar Motel and the Oakland Motel ventures have achieved notable success under his stewardship, maintaining approximately 95% occupancy year-round.
Apart from leading the diner and both motels, Mr. Callis has been managing Callis Enterprise LLC, a landscaping business he established in 2020. The company offers lawn care and maintenance services throughout the local community and beyond.
Leveraging his corporate background, Mr. Callis spent over a decade with DIRECTV in Pennsylvania. He began as an installer technician before advancing to general manager of the Pittsburgh office. Despite the lengthy daily commute to and from work, this period provided him with valuable managerial and customer service experience that would later benefit him as a distinguished business owner across sectors. Mr. Callis’s transition from this type of leadership to entrepreneurship was driven by his desire to remain rooted in his hometown and raise his children within a close-knit community environment. After careful consideration and prayerful reflection on his priorities and values, he left DIRECTV two months after the opportunity arose to pursue business ownership in hospitality and landscaping.
An active member of the Garrett County Heritage Board and his local chamber of commerce, Mr. Callis has become recognized as a respected member of his community. He believes that authentic leadership involves guiding others intellectually and emotionally while leading by example, never asking anyone to perform a task he would not undertake himself. These principles have fostered a culture of trust within Mr. Callis’s businesses and contributed to their ongoing success.
In addition to professional pursuits, Mr. Callis is deeply involved in civic activities within Oakland and greater Garrett County. He is significantly engaged in fundraising efforts for Cindy’s Fund, a local organization dedicated to supporting cancer patients by ensuring all proceeds benefit families within the community directly.
Among recent creative projects, Mr. Callis co-launched a podcast titled ‘Coffee Thoughts with Devin & Dave,’ which spotlights local businesses with humor and insight into community life. This initiative reflects his ongoing commitment to supporting fellow entrepreneurs while engaging with a broad audience.
Throughout his professional journey, Mr. Callis has garnered significant recognition for his achievements. He received the Emerging Entrepreneur Award from his local community in 2025, a distinction that holds particular meaning given his status as one of the youngest business owners in the area. Mr. Callis’s restaurant was also featured on America’s Best Restaurant, a road show, in February 2026, where several of his dishes were highlighted, followed by participation in an interview. The diner has also earned several accolades, such as Best Lunch, Breakfast and Overall Restaurant Spot from Best of Garrett County by WVNews. His motels have also been named Greatest Hotel Motel three times by Best of Garrett County.
Mr. Callis’s philosophy centers on authenticity and emotional honesty as cornerstones of meaningful relationships with customers and colleagues alike. He credits much of his success to maintaining a relentless work ethic while keeping faith at the center of all endeavors. Mr. Callis emphasizes that perseverance through adversity is essential for achieving one’s goals and that genuine connections are built when individuals remain true to themselves and their brand’s values.
Looking ahead, Mr. Callis aims to continue serving as an asset to his community by supporting those in need and fostering collaborative growth among local businesses through partnerships with area vendors such as bakers and other suppliers. His legacy is defined by service, providing comfort through food and lodging while uplifting those around him through kindness, leadership and steadfast dedication to community values.
Contact Mr. Callis: