As of Sept. 8, 2026, Mark Byarlay, MD is no longer practicing with Catalyst Physician Group. To schedule with another trusted physician or to transfer your medical records, call us at 817-741-7353.

Mark Byarlay, MD – Family Medicine provider in Keller, TX | Catalyst Physician Group headshot

Mark Byarlay, MD

Mark Byarlay, MD

I am a board-certified physician in family medicine with more than 20 years of experience. As a primary care provider, I focus on building lasting relationships with my patients throughout their healthcare journey.

Patient Portal
  • Education:

    University of Texas Medical School at Houston

  • Degree: MD
  • Specialty:

    Family Medicine

  • Languages: English
Insurance

Our Physicians are in network and contracted with the major insurance companies including HMO, PPO, and Medicare Advantage plans at select locations. Please visit their websites to verify your benefits coverage. Note: Medicare acceptance varies by provider.

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http://Medicare%20Accepted
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Professional Organizations
  • American Academy of Family Physicians

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Mark Byarlay, MD – Family Medicine provider in Keller, TX | Catalyst Physician Group headshot

Mark Byarlay, MD

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