We’ll get you scheduled quickly and make sure you have the time you need to discuss every concern.
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OVER 30 YEARS OF TRUSTED CARE
At Fort Worth Internal Medicine, we’ve created a family-like environment to make our office feel welcoming while providing exceptional medical care and top-tier concierge-level patient service.

What makes our office unique is our availability and the time we dedicate to each patient. Your appointments are longer than most offices’, to give you enough time to discuss concerns, especially if they are complex. We take pride in being medical professionals who listen and take the time to get to know you. Our office staff is courteous, responsive and answers the phone directly when you call. We are a small, private office that prioritizes the individual’s needs and gets to know each patient personally.
Our practice specializes in internal medicine, primary care, geriatrics, and preventive medicine for adults of all ages, using an evidence-based approach. We help patients with complex medical issues and multiple chronic conditions, as well as those with minor concerns.
As the premier primary care Internal Medicine office in the Fort Worth, TX area for over 30 years, we have personal connections with all the hospitals in the area and most of the specialists you would see.
OUR TEAM
The team is led by Dr. Mark Ziats, a board-certified Internal Medicine physician, and Ashley Pittman, APRN, who has been practicing with Fort Worth Internal Medicine for over a decade.

Highly experienced and well-trained medical professionals provide the top-quality care you receive at Fort Worth Internal Medicine. Dr Ziats completed MD/PhD training at Baylor College of Medicine and the University of Cambridge (UK), and has extensive clinical experience in acute hospital care, post-acute care, and general outpatient internal medicine across various settings in the U.S. Ashley Pittman has extensive experience in geriatric medicine, value-based care, and has taken care of many of the patients in our practice for decades.
Our office and support staff are also unmatched in experience, training, and the quality of care they provide. They work with you to address and resolve your issues promptly and pleasantly. For those with needs outside of our office hours, we offer various after-hours programs, including chronic care management with 24-hour nurse access for Medicare patients and other concierge options.
You will find our office is traditional yet inviting, featuring a comfortable waiting area. Since we're on ground level, it's easily accessible with parking available right outside our front door.