Dr. Zachariah Overby, MD
DPC Family Medicine physician, Greenville, SC
Crossbridge Direct Primary CareDr. Overby is a family medicine physician and Air Force veteran who serves members at Crossbridge DPC.
Facts on this page last checked October 2026. How we check doctors
About Dr. Overby
Dr. Overby earned his medical degree at the University of Tennessee Health Science Center in Memphis, Tennessee. He did his Family Medicine residency with the Air Force at Eglin Air Force Base. He is board certified in Family Medicine.
He also trained as an Air Force Allergy Extender at Lackland Air Force Base and holds ACLS and BLS certifications. Dr. Overby is an Air Force veteran and an Air Force Reservist. Crossbridge DPC does not accept insurance.
Dr. Overby sees patients of all ages, from pediatric to geriatric care. He is available by text, voice or video calls to discuss health concerns. He visits businesses from time to time and makes house calls when needed.
Employee members can meet with him at their place of employment. Outside of work, he enjoys sports, the outdoors and hot tea.
Membership and fees
Monthly membership at Crossbridge Direct Primary Care is $88 for ages 2 to 5, $58 for ages 6 to 17, $68 for ages 18 to 39, $88 for ages 40 to 64 and $98 for ages 65 and older.
Fees are per person, with a family maximum of $375 a month, and a one-time family enrollment fee of $125 applies.
Fees vary by plan. Ask the practice.
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Questions patients ask
Does Dr. Overby take insurance, or offer a membership?
Crossbridge DPC does not accept insurance. Membership fees are charged per person per month.
How much does a membership at Crossbridge Direct Primary Care cost?
Monthly membership is $88 for ages 2 to 5, $58 for ages 6 to 17, $68 for ages 18 to 39, $88 for ages 40 to 64 and $98 for ages 65 and older. There is a family maximum of $375 a month and a one-time family enrollment fee of $125.
Is Dr. Overby board certified?
Dr. Overby is board certified in Family Medicine.
Where did Dr. Overby train?
He earned his medical degree at the University of Tennessee Health Science Center in Memphis, Tennessee. He did his Family Medicine residency with the Air Force at Eglin Air Force Base.
Does Dr. Overby offer telehealth?
Dr. Overby is available by text, voice or video calls to discuss health concerns.
Does Dr. Overby make house calls?
Dr. Overby makes house calls when the need arises.
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