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

Get Directions

Reviews (112)

4.9 Stars Overall

4.9 out of 5 (254 Ratings, 44 Comments)

Dec 02, 2023

This office has always taken very good care of me and my mother. Dr. Macal always checked results of exrays and found errors many times. He has been my rock many times!

Nov 28, 2023

Dr. Macal explains all lab results, medication and treatment plan very well.

Oct 24, 2023

Dr. Macal has been my PCP for 15+ years never misses a thing -> great provider.

Oct 19, 2023

Dr Macal has always been kind and considerate of any medical problems I have had. He always takes time to explain my blood work, or any questions that I may have. He is a wonderful doctor!

Oct 12, 2023

Dr Macal is Phenomenal!! He is very through. He explains everything so that the patient understands and can make an informed decision.

Oct 06, 2023

Dr. Macal is very professional and takes his time EVERY appointment I have ever had. Excellent doctor!!!

Oct 06, 2023


Oct 05, 2023


Sep 22, 2023


Sep 22, 2023

Doctor Macal is very thorough and endeavors to find out if I have any concerns or problems, he can help me with.

Sep 18, 2023

Consistently excellent experience!

Sep 16, 2023

Dr Macal is always very theral

Sep 16, 2023

Dr Macal spends as much time as we need and provides answers or suggestions for any concerns.

Sep 02, 2023

Dr. Macal has been my doctor for close to 40 years. I trust him implicitly. He always has time to listen to me and always takes the time to inquire about what's happening in my life. From the moment he sits down, I feel like he has all the time in the world for me.

Aug 25, 2023

I always recommend Dr. Macal. I'm surprised he doesn't run much more behind with the attention to detail he offers.

Aug 25, 2023

Doctor McCall was very good at taking the time necessary to answer my questions to ask me appropriate questions.And overall very good concern about my health care.

Jul 28, 2023

Always very informative

Jul 28, 2023

Is a very caring doctor, goes overall results with you, addresses all concerns he has. Is very thorough. He is the best caring doctor I have had in years. You leave the office knowing the doctor cares, and you leave very satisfied.

Jul 21, 2023

I trust Dr Macal with my life, he's always provided the best care for me for about 25 years and now he treats my husband and mom

Jul 14, 2023

Doctor Oscar Macal is thorough, professional, astute, an extremely good listener, and extremely smart. Very nice kind person.

Jun 30, 2023


Jun 30, 2023

I am very proud to be Dr. Macal's patient

Jun 09, 2023

Provider asked me a very few questions about - my pain - what might be a favorite solution to immediately stop the pain - he did order a x-ray - no explanation in his results of x-ray.

May 24, 2023

Compassionate and and helpful

May 17, 2023

Dr always answers my questions very well.

May 03, 2023

Always very good.

Apr 26, 2023

All responses were very good

Apr 19, 2023

Dr. Macal always listens to the patient. He explains things easily so you can understand. He works out the plan of treatment with you. He is GREAT!! I wish that I would have had him as my physician years ago. HE IS GREAT.

Mar 29, 2023

Very informative

Mar 22, 2023

Dr Macal is always thorough

Mar 19, 2023

Dr. MA CAl is the very best

Mar 15, 2023

Very comfortable and appropriate visit

Mar 11, 2023

Dr Macal and his team are great

Mar 10, 2023

Macal and his whole staff are simply #ONE

Feb 27, 2023

Always excellent care

Feb 27, 2023

Dr. MACAL is a 10+

Feb 27, 2023

Dr. Macal has been my doctor for over 30 years and has given me excellent care over that time period. I am very happy with the care he provides.

Feb 13, 2023

Dr Macal is wonderful!

Feb 09, 2023

Very professional!

Jan 25, 2023

Dr. Macal thoroughly explained issues I did not understand.

Jan 16, 2023

Dr. Macal is wonderful.

Dec 21, 2022

You could not ask for a better doctor. Dr Macal is the best

Dec 16, 2022

Dr. Macal is caring and compassionate about his patients. He takes good care of them

Dec 16, 2022

He asked me questions about my family's history which I find no problems in answering. He was able to discuss and explain things to me that I've already been working on for quite some time.

Nov 18, 2022

Dr. Macal will take any amount of time you need to go through all of your questions/concerns.

Nov 11, 2022

Dr. Macal is THE best

Nov 04, 2022

Macal is the best!

Oct 19, 2022

Dr. Macal always double checks results that he questions, and rightfully so. He is a wonderful Dr. He was wonderful with my mom also

Oct 08, 2022

Very thorough and answered all questions. Very satisfied!

Oct 06, 2022

Dr Macal is very compassioante and friendly. Have gone to him for many years.

Oct 04, 2022

Dr. Macal is always patient with any of my questions and explains any medical terms or information from my blood work.

Sep 29, 2022

No problems

Sep 24, 2022


Sep 17, 2022

Excellent time with physician

Sep 16, 2022


Sep 11, 2022

The doctor is very kind and I always recommend him to all my friends.

Sep 10, 2022


Sep 09, 2022

Dr. Macal listened carefully and addressed all of our concerns.

Aug 25, 2022

Nice clean and quiet office. Very professional people.

Apr 15, 2022

Dr. Macal is the best in all ways.

Apr 08, 2022

Dr. Macal always listens and never appears that is in a hurry to get appt. over.

Feb 13, 2022

Dr. Macal and his staff are very patient oriented.

Feb 07, 2022


Jan 28, 2022

He's very receptive to my input, discusses the "why" or "why nots" of any suggestions I have, and my questions are answered thoroughly.

Jan 22, 2022

Ive had better

Jan 22, 2022

Very good

Jan 06, 2022


Sep 10, 2021

Quick and easy and that's how it's supposed to be

Jul 15, 2021

Dr. Macal does an outstanding job in dealing with my time and concerns.

Jun 26, 2021

best doctor I have ever had. he doesn't rush you. he listens carefully and explains things well very intelligent man!

Jun 16, 2021

they have always provided good care

Jun 03, 2021

They listen, very concerned.

Apr 23, 2021

Dr. Macal always listens. He explains all of blood work. If I have a qts. about something he always explains-

Apr 22, 2021

Dr. Macal is an excellent, caring doctor!

Apr 20, 2021

Doctor is very thorough when he explains test results and his opinion of my over all health situation. I like that.

Jan 30, 2021

Dr Macal was great.

Jan 29, 2021

I would recommend Dr. Macal's office and his staff to anyone! true professionally and old school Medicine where the office staff nursing staff and doctor, listen to their patients !!

Jan 27, 2021

I never have any problems with my doctor. He is a excellent doctor

Jan 09, 2021

Very thorough

Dec 06, 2020

I've never had a bad experience

Oct 21, 2020

Dr. Macal is VERY thorough and an excellent listener !!!

Oct 21, 2020


Oct 11, 2020

Dr. Macal always pay attention

Oct 02, 2020

Dr. Macal is always thorough, systemic, and takes time to listen. He walks you through what he is reviewing after examination and makes sure I understand.

Sep 11, 2020

Dr Macal always takes time to explain your problem

Jul 24, 2020

Dr Macal was friendly, informative, and always thoroughly discusses my course of treatment.

Jul 01, 2020


May 29, 2020

I always feel my healthcare is in very able, caring hands

May 04, 2020

good work

Apr 28, 2020

Dr. Macal is awesome

Mar 07, 2020

I highly recommend Dr. Oscar Macal to anybody I am in conversation with for a personal physician.

Jan 24, 2020

The appointment went very well.

Nov 01, 2019

This office is the best!

Oct 31, 2019

Doc is the best

Oct 25, 2019


Aug 19, 2019

Dr. Macal has been my doctor for over 30 years. I just love him!

Aug 03, 2019

good concerns for me

Aug 03, 2019

great office!!

Jul 12, 2019

Great knowledge base. Explains issues with enough detail. Considerate.

May 26, 2019

Dr. Macal always seems to have time for me. He listens and then explains what treatment he feels is best. He seems very knowledgeable and I like him as my physician.

Apr 29, 2019

I need a specialist in Owosso, not currently available.

Apr 26, 2019

long survey. Repetitive

Mar 28, 2019

very good

Dec 15, 2018


Dec 07, 2018

Dr. Macal always spends time explaining blood work results and reviewing my prescriptions. He always gives you plenty of time to ask questions and takes his time explaining his observations in an easy to understand language.

Nov 30, 2018

I value Dr Macal's input for my health care needs.

Nov 06, 2018

I trust this doctor implicitly

Oct 10, 2018


Sep 15, 2018


Aug 28, 2018

Dr Macal is great~

Aug 14, 2018

we have recommended Dr. Macal to four different people.

Aug 03, 2018

Fortunatey, most of my visits with Dr. Macal have been for annual physicals and follow-ups. My wife's physician left the Owosso area and she is now using Dr. Macal as her personal physician. She requires much more attention due to her physical conditions and she is very comfortable with Dr. Macal.

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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