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)

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.

Jan 03, 2024

Highest recommendation

Jan 03, 2024

Dr. Macal is extremely thorough. Answered all my questions and thoroughly explained bloodwork, etc

Dec 29, 2023


Dec 05, 2023

Dr. Macal listens to me, explains things clearly to me and I truly feel he wants to see me succeed in obtaining good health.

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

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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