We are now open for all patient appointments.
We are accepting new patients.


  • Clinic hours are 8am – 4pm
  • Only patients allowed in clinic, no guests
  • Please no purses or bags
  • You may see a different OB/GYN doctor than your regular doctor at times.  Our doctors are staggering their shifts for safety purposes.


We are kindly asking our patients to assist us in reducing the risk of COVID-19 exposure so we may maximize the safety of our patients, staff and community. 


We must limit the amount of people in our clinic. Only patients are allowed in the clinic.  Please NO Guests or CHILDREN in the clinic. We sincerely thank you for following these important guidelines to allow for the safety of our patients, staff and doctors.


For the safety of all our patients and staff, please do NOT come into the office if you have a fever (100.4 or greater); OR, if you have any upper respiratory or cold/flu-type symptoms; OR if you have had any recent travel to any high risk travel areas as designated by the CDC; OR, if you have had contact with anyone testing positive for or suspicious for Coranavirus (COVID 19).


We are NOT equipped to manage any patients having COVID-19 in the office setting. Please call our office or go the Emergency Room at St. Peters Health if you have any symptoms or concerns regarding COVID-19 exposure. PLEASE CALL ST. PETERS COVID-19 HOTLINE WITH ANY CONCERNS 457-4180.


We greatly appreciate everyone’s cooperation and understanding during this window of time. We at Helena OB/GYN & Associates are being as proactive and protective as possible for the greater public well-being. For current information, please visit the CDC and World Health Organization website.


Please call us if there are any questions or concerns regarding an upcoming appointment. We sincerely thank you for your patience and cooperation.  


Our patient care team is staying up to date and ready to support our patients through this challenging time.


Thank you, Helena OB/GYN & Associates

Helena OB/GYN & Associates

Meet Our Providers

Dr. Jack McMahon

Dr. Alexis O’Leary

Doctor Jessica Parson Helena OB/GYN & AssociatesDr. Jessica Parson

Denise Smigaj, FNP

Patient Portal

Our online patient portal allows you to communicate with us easily and safely. Log into the online patient portal 24 hours a day, 7 days a week from the comfort and privacy of your home or office.

Dr. Jack W. McMahon & Helena OB/GYN

Together, we specialize in obstetrics and gynecology, which includes the examination, diagnosis, prevention and treatment of women's health problems.



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    3 Year Birth Control!

    Nexplanon is a thin plastic rod the size of a matchstick, inserted under the skin.

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  • Permanent birth control

    Permanent birth control


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U.S. WomenAges 15–44

Are sexually active and do not want to become pregnant, but could become pregnant without contraceptives.


Not Using Birth Control

Couples not using contraception have approximately an 85% chance of a pregnancy over the course of a year.


Births by Cesarean

Around 33% of all U.S. births were delivered by cesarean, a rate that has remained unchanged since 2010.


Unplanned Pregnancies

Nearly half (49%) of the more than 6 million pregnancies that occur each year are unplanned.