Ascension Medical Group Genesys

Pediatric Offices of Drs. Allyn, Simmert, and Chrenka

Dr. AllynDr. SimmertDr. ChrenkaAnna RothAshley

:::Dr. Allyn ::::: Dr. Simmert :::: Dr. Chrenka:::: Anna Roth :::: Ashley Duffield

                                                                                                                                                               Pediatric Nurse Practitioners

Welcome to our web site!

We look forward to seeing you in our office soon. Until then, and in order to help you provide better care for your child, we have created this web site. Prior to exploring our web site, we ask that you read this disclaimer. As our goal is to provide the best possible care for your child, any feedback regarding this website or your experience at our office is greatly appreciated. Thank you and happy browsing.

News and Announcements

Notice - Covid-19 Pandemic Information

During the 2020 Covid-19 Pandemic, for the benefit and care of our patients, both our Flint and Fenton offices remain open at our normal business hours. We are seeing well visits (Well checks, medicine checks, physicals, non-infectious problems) before 3:30 pm, and sick (potentially infectious) visits after 3:30 pm. We also are able to do Virtual Visits if needed. Call today for an appointment, don't get behind on your child's yearly well check (sports physical).


Our Fenton Office has moved to a new location!

Our Fenton office is now located at 1100 Torrey Road, Suite 500 (at the far right end of the building).


Kindergarten / School / Well Checks / Sports Physicals

It's that season again.  Well Check/ Sport Physical season that is.  The American Academy of Pediatrics recommends that all children over the age of 2 years receive yearly well check/ physicals.  School systems require that all children receive a complete physical within 365 days of starting kindergarten. This consists of obtaining height, weight, Body Mass Index (BMI), blood pressure, vision screen, labwork, and updating immunizations. The State of Michigan provides a form for the physician's office to complete which should be returned to your child's school after the physical exam. Please bring this form with you to the visit. If the physical is not performed before school begins, you will have a thirty day grace period to get the exam and to complete the form. These appointment slots fill up quickly, so please call early to schedule your child's kindergarten physical.

Prior to your well check, please download and complete history section of the appropriate form.

For children 2 months to 12 years, use the Michigan Health Appraisal Form here; Michigan Health Appraisal Form

For Middle School,Junior High, (6th grade and up) and High School students, download the MHSAA forms here; Michigan High School Athletic Association Physical Exam form; 2-page form

Sports Physicals

For your convenience, We will be offering Sports Physical Exams for Junior High and High School students. Sometimes your child's sport season sneaks up on you and you need a sports physical performed quickly. We can accomodate a limited number of sports physical exams as same-day and next-day appointments, please call in the morning to schedule. The fee is $30 cash. Prior to your physical, please download and complete history section of the Michigan High School Athletic Association Physical Exam form; 2-page form.
(Note: a sports physical is not a substitute for a yearly well check exam. Any other issues will not be addressed during these sports physical.Additionally- Sport Physical Exam forms are completed at well check exams and are valid for one year)


Pediatric Overweight and Obesity

Overweight and obesity are increasing problems for children in the United States.  It is estimated that for this generation of children will be the first in American history to have a shorter average lifespan than the previous one.  Obesity related illnesses for this generation is expected to become the number one cause of preventable death, taking over from tobacco-related causes.  Per American Academy of Pediatrics recommendations, all children over the age of 2 years should be seen for yearly well checks.  At The Children's Office, we check height, weight, and Body Mass Index (BMI) at every well check.  If you think your child may be at risk, please see our section on Overweight/ Nutrition and Exercise ( in the Medical Advice section.

Gardasil Safety Information

Gardasil is a three dose vaccine approved for girls and boys to prevent cervical cancer, throat cancer, and genital warts. Recommended times for vaccination are at the 11 year old well check, but can be given as young as 9 years. Do to recent incomplete media exposure regarding its safety, we suggest checking out the latest safety data from the Center for Disease Control and the U.S. Federal Drug Administration.



New Immunization Requirement / Vaccine Safety


Vaccine Information Statements (from the CDC)

Per the Michigan Department of Community Health, beginning January 1, 2010, All children entering kindergarten, all 6th grade students, and all children changing school districts are required to have had two doses of varicella (chickenpox) vaccine.

Additionally, all children 11-18 years or enrolled in the 6th grade must have one dose of meningococcal (for meningitis) vaccine and one dose of Tdap (tetanus/diphtheria/acellular pertussis) vaccine.

Recently, their has been much discussion in various popular media sources regarding the safety of childhood vaccines. No doubt you have probably heard (from less than reputable sources) the charge that "vaccines cause autism." While these charges are not backed up by fact or science, fear and anxiety has been spread. Let's separate the fact from the fear. We invite you to check out our resources on vaccine safety.

MRSA Information

The news media have carried several stories concerning a virulent staph infection known as MRSA, or Methicillin-Resistant Staphylococcus Aureus. These bacteria typically cause skin infections and have not responded to treatment with the usual antibiotics used for such infections. However, there are other antibiotics that are effective and most infections respond well to such treatment.

Prevention of staph infections can be accomplished by good skin care, including cleansing any cuts or scrapes with soap and water and keeping open sores covered until they heal. A topical antibiotic ointment may be used as well. Medical care should be sought for a skin sore that becomes progressively more red, swollen, or tender, or that drains fluid or pus.


Cold and Cough Medications Withdrawn for Children Under 4 Years

Acting on the advice of the U.S. Food and Drug Administration, drug companies recently removed cold and cough medications for children under age 4 years from store shelves. There has been significant concern regarding potential serious complications from the use of these drugs. In addition, studies have demonstrated that these medications are not effective in children under 6 years of age.

This announcement has left some parents wondering what they can do to help their infant or toddler when they have symptoms of the common cold. There are many ways to help a young child be more comfortable as a cold runs its course. Please visit the Medical Advice section of our website and also the American Academy of Pediatrics website to find out more.



Last updated on 31 December 2018