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MHMG El Campo

Memorial Hermann Medical Group El Campo

1602 North Mechanic St
El Campo, TX 77437
(979) 543-2956 tel
(979) 543-6756 fax
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Memorial Hermann Medical Group welcomes you to our El Campo practice. We provide comprehensive, integrated care backed by the vast clinical resources of Memorial Hermann. Memorial Hermann Medical Group El Campo offers a full range of medical specialists who pledge to provide the highest quality health care for every patient.

Our patients enjoy:

• A relationship with a physician founded on compassion

• Electronic Medical Records for secure, immediate access to your family's vital medical records

• Online Patient Portal, which gives you access to your chart information, allowing you to actively monitor your health and communicate directly with your doctor

• Employer services which include drug testing, pre-employment physicals and annual physicals

• Medical appointments available from 8 a.m. – 5 p.m. Schedule online at or call 979.543.2956.

Convenient care with early morning, walk-in care for minor illnesses. No appointment required.
Monday – Friday 7 – 9 a.m.

Meet the Providers  


 Cain MHMG El Campo

Jo Cain, P.A.-C.


 Dimmick MHMG El Campo

Greg Dimmick, M.D.

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 Anne Mazel, N.P.

Anne Mazel, M.S.N., A.P.R.N., A.C.N.P.-B.C.




Megan Riha, M.S.N., R.N., C.P.N.-P.C.


 susan winchell

Susan Winchell, M.D.

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John Wissinger, M.D.
Internal Medicine
ScheduleNow Memorial Hermann Medical Group(1)



 Dr. Carlos Zorrilla

Carlos Zorrilla, M.D.

Patient Testimonials

Mary has always treated me with courtesy and respect. She is a very caring assistant. - Anonymous

Dr. Wissinger is a good provider, he has the ability to explain at my level. I can understand him. - Patient of Dr. Wissinger 

Very courteous and helpful. - Anonymous