~ JamesMack.MD.com ~

An endocrinologist in Billings, Dr. James Mack diagnoses, treats, and manages endocrine disorders, or those affecting the body's secretion of hormones such as thyroid problems or diabetes.

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Dr. Mack has one office in Montana where he specializes in Endocrinology and Internal Medicine. Learn more.

Dr. Mack works with one hundred and fourteen doctors including Dr. David Lehnherr and Dr. Lisa Ross.

Hospital Affiliations

  • Billings Clinic Hospital

Languages Spoken  

  • English

Office See Insurance

Billings Clinic  


801 N 29th St, Billings, Montana 59101-0905

Office Hours

  Open Lunch Close
Mon 8:00 am 5:00 pm
Tue 8:00 am 5:00 pm
Wed 8:00 am 5:00 pm
Thu 8:00 am 5:00 pm
Fri 8:00 am 5:00 pm

Office Details

Doctor Specialties Endocrinology & Internal Medicine
Practice SpecialtyMulti-specialty
Group PracticeDeaconess Billings Clinic
Practice OwnershipBillings Clinic Hospital
Hospital Affiliation
  • Billings Clinic Hospital
Languages Spoken Arabic, English, French, German, Italian, Korean, Mandarin, Polish, Portuguese, Russian, Spanish, Tagalog, Vietnamese

Insurance Accepted  

  • Aetna