About
Janna Massar, MD earned her Bachelor of Arts in Biology from the University of North Texas, graduating Magna Cum Laude in 1993. She received the Outstanding Female Senior in Biological Sciences honor and the Patricia Schmidlkofer Award. She went on to earn her Doctorate of Medicine from the University of Texas Medical Branch in Galveston in 1996. Her internship and internal medicine residency also took place at UTMB, where she earned Outstanding Intern and Outstanding Second Year Resident honors. She holds board certification from the American Board of Internal Medicine and membership in the American College of Physicians.
Dr. Massar served as Medical Director for multiple care organizations between 2000 and 2008 and chaired the Medicine Peer Review Committee from 2005 to 2007. She served on the Board of Trustees at Paris Regional Medical Center for five years. She has spoken at the Laura W. Bush Institute for Women's Health on herbs and supplements and sleep disorders. D Magazine published her work on metabolic syndrome in 2010, and Addison Magazine featured her writing on annual wellness exams in 2015. She served as Health Liaison for WB33 Nightcap News and KRLD 1080. Plano Star Courier readers named her Best General Practitioner in Plano in 2012. Dr. Massar is passionate about metabolic syndrome, women's health, and preventive care. She reads current medical literature consistently and brings that knowledge directly to her patients.
Education & Training
Undergraduate
University of North Texas, Denton, TX - Bachelor of Arts, Biology, 1993 (Magna Cum Laude)
Medical School
University of Texas Medical Branch, Galveston, TX - Doctorate of Medicine, 1996
Residency
Internal Medicine Residency, University of Texas Medical Branch, 1997-1999 (Outstanding Second Year Resident)
Additional Training
Internship, University of Texas Medical Branch, 1996-1997 (Outstanding Intern)
Certifications
Conditions Treated
Who is Dr. Massar right for?
Dr. Massar is an excellent fit for adults who want a physician focused on prevention and long-term wellness. Patients managing metabolic syndrome, chronic conditions, or women's health concerns benefit from her deep clinical expertise. She works well with patients who value direct access to their doctor, including after-hours phone availability. Those who want same- or next-day appointments and personal physician attention will find her practice a strong match.
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Frequently Asked Questions
Dr. Massar focuses on preventive care, metabolic syndrome, women's health, and chronic disease management. She also provides diagnostic care, travel medicine, and annual wellness exams. Her clinical interests span a wide range of adult internal medicine concerns.
Yes. Dr. Massar holds board certification from the American Board of Internal Medicine. She also holds membership in the American College of Physicians.
Dr. Massar earned her medical degree from the University of Texas Medical Branch in Galveston in 1996. She completed both her internship and her internal medicine residency at UTMB as well. Her program recognized her with Outstanding Intern and Outstanding Second Year Resident honors.
Dr. Massar sees every patient personally. No nurse practitioners or physician assistants substitute for her during appointments. Patients always receive direct care from Dr. Massar herself.
Yes. Dr. Massar gives her members direct phone access after hours and on weekends. This level of accessibility is a core part of her concierge practice model.
Dr. Massar earned Outstanding Intern and Outstanding Second Year Resident honors during her training at UTMB. Plano Star Courier readers named her Best General Practitioner in Plano in 2012. She has also spoken at the Laura W. Bush Institute for Women's Health on topics including herbs, supplements, and sleep disorders.
Yes. Dr. Massar holds affiliations at Texas Health Presbyterian Hospital of Plano and Texas Health Center for Diagnostics and Surgery. These affiliations support her ability to coordinate care and specialist referrals for her patients.
Dr. Massar treats prevention as the foundation of adult health. She consistently reads current medical literature and brings that knowledge directly into patient care. Her annual wellness exams and metabolic screenings help patients understand their health risks early.
Doctor profile last updated March 21, 2026