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Picture of Marshall Browning Medical Clinic.
Picture of Marshall Browning Medical Clinic.

Marshall Browning Medical Clinic


The Marshall Browning Medical Clinic is located on the southwest corner of the hospital campus. It is a Rural Health Clinic which offers internal medicine, family practice, and psychiatry services.

  • Robert Davidson, M.D., Family Practice


    Dr. Davidson has been practicing medicine for over 30 years and is board certified in family practice. He cares for both children and adults.


  • David Yablonsky, D.O., Internal Medicine

    Dr. Yablonsky is a board certified internist. He is trained to diagnose and treat complex acute and chronic diseases in almost every adult organ system. His focus is on disease prevention and health optimization.



  • Mariah Charles, M.S.N., A.P.N., F.N.P.-BC, Family Practice

    Mariah is a board certified family nurse practitioner. She is trained in diagnosis, treatment and evaluation of routine to acute illnesses. She treats both children and adults seeking general medical care.



  • Danielle Klump, M.S.N., A.P.N., F.N.P.-BC, Family Practice

    Danielle is a board certified family nurse practitioner, trained in diagnosis, treatment and evaluation of routine to acute illnesses. While addressing your general and specific health concerns, Danielle also administers wellness checkups, school and DOT physicals. Danielle treats both children and adults with special interests in cardiology.


  • Adam Henson, M.D., Family Medicine

    Dr. Henson has experience in many areas of family medicine and a reputation for compassionate care. His background includes pediatrics, sports medicine, geriatrics, obstetrics/gynecology, psychiatry, and more. He provides care for patients of all ages, as well as performs in-office procedures, and helps manage chronic care conditions and wellness plans.


The Medical Clinic is open the following hours for primary care:


Monday: 8:00 a.m. - 4:30 p.m.
Tuesday: 8:00 a.m. - 4:30 p.m.
Wednesday: 8:00 a.m. - 4:30 p.m.
Thursday: 8:00 a.m. - 4:30 p.m.
Friday: 8:00 a.m. - 4:30 p.m.


Accepting new patients including Medicare and Medicaid. For an appointment, call (618) 542-1050.

In addition to primary care services, psychiatry services are provided at the Marshall Browning Medical Clinic on the second and fourth Thursdays each month from 8:00 a.m. to 4:30 p.m. Providers include Sandra Tate, PMHNP, APN, CS, and D. Tomlianovich, PMHNP, MSN, FNP. For an appointment for psychiatry services, call 618-292-9999.

David Yablonsky, D.O., serves as the Medical Director of the Marshall Browning Medical Clinic and the Marshall Browning Family Health Center.

Providers furnishing services at the Medical Clinic are independent contractors and are not employees of Marshall Browning Hospital with the exception of Mariah Charles, MSN, APN, FNP-BC; Danielle Klump, MSN, APN, FPA, FNP-BC, and Adam Henson, M.D.
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