Oscar Macal, MD, FACP

An Employed Provider of Memorial Healthcare
Doctor of Internal Medicine

About Dr. Oscar Macal, MD, FACP

Dr. Macal provides internal medicine services with Antonio Santiago, MD, FACP and Jason Ardelean, FNP-C at Memorial Healthcare Internal Medicine – Owosso. Dr. Macal is accepting new patients with most insurances.

View the Memorial Healthcare Internal Medicine (Owosso) website for additional information.

Memorial Healthcare Internal Medicine – Owosso is an employed physician practice of Memorial Medical Associates, a department of Memorial Healthcare.

Accepting new patients


Accepts children




University of San Carlos (Guatemala)



St. Joseph Mercy Hospital



Internal Medicine


Board Certifications

Internal Medicine (American Board of Internal Medicine)





300 Health Park Drive, Suite 302
Owosso, MI 48867

Phone: 989-723-5540 Fax: 989-720-2292

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Reviews (36)

4.9 Stars Overall

4.9 out of 5 (234 Ratings, 36 Comments)

Jun 09, 2024

I had DR Macal and then I moved away. I was so happy when I moved back here 12 years later and I could have him as my Dr again.

Jun 08, 2024

Very satisfied with my appointment.

Jun 08, 2024

Dr Macal is always very thorough and always listens

Jun 01, 2024

Dr Macal always listens and spends as much time as we need to meet our needs. He seldom does unnecessary tests but gets the diagnosis accurately. I do not look forward to his retirement!

May 24, 2024

Always a good experience with Dr. Macal

May 24, 2024

Always gives time to listen, to explain, to care.

May 17, 2024


May 17, 2024

Dr. Macal is always kind, attentive and informative. This time he was even more so and made sure I was referred to the specialist I needed and then called to be sure I had been able to get a d keep the appointment.

May 11, 2024

Dr. Macal is never rushed. He takes the time to listen and engage in my health concerns.

May 05, 2024

Dr. Macal is wonderful. He always takes his time discussing everything. I never feel like I am being rushed out the door.

May 03, 2024

Doctor was very attentive and took time to explain the health issues I was having and suggested additional testing.

Apr 07, 2024

Always good

Mar 29, 2024

I always tell everyone Dr Macal is the best doctor in town

Mar 23, 2024

As my doctor moved out of the area, my daughter recommended Dc. Macale. He accepted me as a patient, and I have been very pleased with his concern and treatments.

Mar 15, 2024

Very pleased with everything. I will continue with service

Mar 01, 2024

Dr Macal always very thorough, timely and listens

Feb 15, 2024

I was there for a routine phys. therefore most of the questions don't apply. Everything is just fine!

Feb 05, 2024

Was told it was important to schedule colonoscopy yet nothing in Dr notes stated this. So when I told them I needed a referral to schedule it, assistant stated it wasn't in the notes.

Jan 21, 2024

Dr Macal took adequate time with me. He answered my questions thoughtfully and thoroughly and offered me options that may be a better route of therapy for me. Most of all though, whenever I have an appointment with him, he actually listens and does a very thorough examination of me. I felt that I was competent and capable of following through with his orders. I highly recommend him.

Jan 12, 2024

Dr. Macal continues to be thorough and Informative. He never hesitates to review any question.

Ratings Process

The Patient Rating score is based on responses given during the CAHPS Patient Experience Survey. Responses are measured on a 10-point scale, with 10 being the best score. These scores are then translated to a 5-point scale in order to display results in a 5-star rating. Comments are also gathered from the same survey and displayed in their entirety with the exception of any language that may be considered slander, libel or contain private health information, which will be removed prior to publishing the comments.

Insurance Accepted

  • Aetna
  • BCBSM Blue Preferred Plus
  • BCBSM Medicare Plus Blue PPO
  • BCBSM Traditional, HAP
  • BCN Medicare Advantage
  • Blue Care Network
  • Blue Cross Blue Shield PPO/ Trust
  • Blue Cross Complete
  • Cigna
  • Cofinity
  • HAP Empowered Medicaid
  • Health Alliance Plan of MI
  • Humana Military
  • Humana PPO
  • McLaren Commercial
  • McLaren Medicaid
  • Medicaid
  • Medicare
  • Meridian Health Plan Medicaid
  • Molina Healthcare
  • MultiPlan
  • Palmetto GBA(Railroad Medicare)
  • PHCS
  • PHP Commerical
  • PHP Medicare
  • Physicians Health Plan Commercial
  • Priority Health
  • Sparrow Physicians Health Network
  • Tricare Standard
  • United Healthcare Commercial
  • United Healthcare Community Plan

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