Primary Care

Putting Your Family’s Health First

Dr. Donald Maddack and Dr. Leonard Ostrowski, Jr. are board certified in Family Medicine and are proud to treat generations of Porter County residents. Whether it’s a short-term illness like the flu or gastric upset or a chronic illness such as diabetes, high blood pressure, arthritis and others, these physicians will be with you every step of the way. Throughout all stages of your life you will find the care and compassion and expertise you need right here.

Specialties & Practices Areas

Family Medicine

From newborns all the way through geriatrics, your family physicians at Porter Physician Group provide you and your family a continuum of care.

  • Well Babies & Children
  • Teens & Adolescents
  • Young Adults
  • Adult Women – PAP Smears, Cardiovascular Health, Health Maintenance
  • Adult Men – Cardiac Risk Assessment, Erectile Dysfunction, Health Maintenance
  • Older Adults – Diabetes, Cardiovascular Health, Arthritis
  • Behavioral Health – Anxiety, Depression, Relationship Issues
  • Pulmonary Disorders – Emphysema, Asthma, Pulmonary Function Testing

Acute Care (Short-Term Illness)

Trained to treat the whole person at every stage of life, the professionals at Porter Physician Group encourage you to visit us when you're experiencing an illness or non-life threatening injury.

  • Upper Respiratory Illnesses — allergies, flu, persistent coughs
  • Ear Infections & Sore Throats
  • Gastrointestinal Disorders — GERD, constipation, diarrhea
  • Sprains & Strains
  • Minor Lacerations

Chronic Disease Management

The most encouraging thing about many chronic diseases is that through careful management the family physicians at Porter Physician Group are helping patients live better every day.

  • Diabetes – management and monitoring - (Porter also offers special diabetes classes. Visit to learn more.)
  • Respiratory Disorders – emphysema, asthma, COPD
  • Gastrointestinal Disorders — GERD, constipation, diarrhea
  • Sprains & Strains
  • Minor Lacerations

Physical Exams

Whenever you need an assessment of your overall health, you can “get physical” with the physicians at Porter Physician Group.

  • School Physicals
  • Sports & Camp Physicals
  • Executive & Employment Physicals
  • Workers’ Compensation Physicals
  • Annual Health Maintenance Physicals

Seasonal Flu Shots

While washing hands is the first line of defense in fighting seasonal flu, the physicians at Porter Physician Group recommend an annual flu shot. It is important to get flu shot every year because the strains of flu are constantly changing and the immunity offered by the vaccine is not very long lasting.

Adult & Children Immunizations

Immunizations have helped children stay healthy for more than 50 years. They are safe and they work. In fact, vaccinations have reduced the number of infections from vaccine-preventable diseases by more than 90 percent. Unless exempt, The State of Indiana requires that school age children to be immunized before entering school. Let Porter Physician Group help your child stay current to stay healthy.

  • Required Childhood & Adolescent Immunizations
  • HPV
  • Zoster (shingles)
  • Pneumococcal (pneumonia)
  • Seasonal Influenza (flu)
  • Varicella (chicken pox)
  • Hepatitis A/Hepatitis B

We recommend you check with your insurance company to ensure these immunizations are covered.


3125 Willowcreek Road
Portage, IN 46368

Phone (219) 762-3175
E-mail Click Here
Hours Mon 8am to 6pm Tues-Fri 8am to 5pm
Directions Click Here

Insurance & Payment Information

We are happy to submit and bill your insurance forms for you as long as you have provided us with the appropriate insurance information. Co-pays and deductibles are due at the time of your service. Please feel free to discuss with the office staff any questions you may have about billing.

Accepted Insurance Plans

We accept Medicare and most HMO and PPO plans. We have listed the insurance plans listed that are accepted by Primary Care.

  • Advantage Health Solutions
  • Aetna
  • Anthem
  • Arcelor Mittal
  • Cigna
  • Corvel
  • Encore
  • HFN
  • Health Net Federal Services
  • Traditional Medicaid
  • Medicare
  • Community Health Alliance
  • Lutheran Preferred
  • sagamore
  • Tricare
  • United Health Care

New Patient Resources

The physicians, nurse practitioners, nurses and support staff who make up Porter Physician Group all share a common goal – to meet your individual healthcare needs in a timely and caring manner. If you are a new patient or have been a patient in our practice for some time, we thank you for choosing Porter Physician Group.

What Should I Bring to My Appointment?

  • Your insurance card and referral form if required by your insurance provider.
  • A list of current prescription and/or over-the-counter medications you are taking, including your dose and frequency.
  • Pertinent information about your medical and surgery history.
  • Any recent x-rays or test results related to your condition.

Patient Medical Forms

Please download, print and fill out the appropriate forms below prior to your appointment with Porter Physician Group. Filling out these forms will save time on the day of your appointment.