Alliance Main Campus
1560 Turf Lane
East Lansing, MI 48823

ph: 517-484-3000
fax: 517-484-6358
Sparrow Lab Hours
Mon - Fri 8:00 - 5:00
Closed 12:30-1:30

Alliance South Campus
1100 South Cedar Street
Mason, MI 48854

ph: 517-484-3000
fax: 517-978-0002
Sparrow Lab Hours
M, W, Th & F 8:30-4:30
Tues 9:00 - 4:30
Closed 12:30 - 1:00

About Us

Alliance Obstetrics and Gynecology provides a full spectrum of health care for women, offering complete obstetrical care. Serving patients from adolescence through menopause and beyond, we take a partnership approach to healthcare, working with our patients on the premise that equal participation in the decision making process leads to optimal health.


Please review the Alliance Ob-Gyn Code of Conduct


Click here for Patient Portal FAQ's.

Last chance to have a Bone Mass Density Screening in 2018 is November 28.  This preliminary screening is for women over the age of 35, who are not currently pregnant and have never had a bone scan.  To schedule your appointment, call us at 517-484-3000. 
A message from Dr. Guerin:
Farewell to my dear patients.  It has been a privilege to stand with you through joy and sadness.  I will miss you, each one, you have given me such happiness.
I will be retiring at the end of December.  Please join us for a Farewell Reception on December 5 from 4:30 - 6:00 pm at our East Lansing office.  Click here for a letter to my patients.
Effective November 1, 2018 Alliance Obstetrics & Gynecology PLC will no longer participate with the following Medicaid insurance plans:
Straight Medicaid (including spend down)
Blue Cross Complete Medicaid
Meridian Health Plan
Molina Healthcare
McLaren Health Plan Medicaid - established patients we will honor your plan through 1/9/19
Click here for more information on your options.
Did you know that you are able to send us messages, request appointments, review your health records and submit prescription refill requests all with your Follow My Health patient portal?  Click here to sign up.

At Alliance, our goal is to provide our patients with the best experience possible when interacting with our practice.  We are pleased to announce our secure, interactive patient self-service feature that will let you communicate with us from the convenience of your home or office.  If you would like to sign up for the Patient Portal or if you have questions about your account, please call our office at 517-484-3000.

Behind the Scenes
For daily news updates, inspirational tidbits, and more, like us on Facebook.

Stay in the Know
Keep abreast of all the latest healthcare information.

Life Long Learning
We are always finding great articles to share with the community.

Medical Records
DataFile Contact Center

Phone: 816-437-9134
Monday - Friday
8:30 am - 6:00 pm EST

Click here for the Alliance Notice of Privacy Practices. 

Click here for important
information about
Alliance's participation with
Medicare's ACO program.