Summary

Dr. James Mack treats metabolic bone disease, osteoporosis, and pituitary and adrenal disorders, and has practiced endocrinology, diabetes, and metabolism for 39 years. He is affiliated with Billings Clinic Hospital in Billings, Montana. Dr. Mack earned his medical degree from the University of Washington School of Medicine and completed his residency at Mayo Clinic. Patients on Vitals rate Dr. Mack 3.83 out of 5.

Overview based on verified provider data

Quick Facts

  • 3.8
  • 39 years of experience
  • 3 insurance plans accepted
  • speaks English
  • Mayo Clinic And Medical School
  • 5 written reviews
  • 2 specialties
  • 20 areas of expertise
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Location

James A Mack

1045 N 30th StBillings, MT 59101

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James A Mack, MDColleen L Wood, MDJodie Michelle Mcilvain, PAChelsi Rae Hayter, NP
Endocrinology, Diabetes & MetabolismEndocrinology, Diabetes & MetabolismEndocrinology, Diabetes & MetabolismEndocrinology, Diabetes & Metabolism
Accepts New Patients Accepts New Patients Accepts New Patients
3.8 
5 
0 
5 
39 Years of Experience 21 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English, Spanish Speaks English
Billings , MTBillings , MTBillings , MTBillings , MT
Med School: University Of Washington School Of Medicine Med School: University Of Washington School Of Medicine
Current Profile
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Insurance Plans Accepted by James A Mack

  • Accepts Medicare
  • Accepts Medicaid
  • Blue Cross Blue Shield of Montana
  • Medicaid - Medicaid (Managed)
  • UnitedHealthcare

Medical Specialties

James A Mack has the following 2 specialties

Specialty Expertise

James A Mack has the following 20 areas of expertise

  • Acromegaly
  • Addison Disease
  • Adrenal Gland Diseases
  • Cushing Disease
  • Diabetes
  • Diabetes (Types I & II)
  • Diabetes Mellitus, Type 1
  • Diabetes, Type 2
  • Endocrinology & Metabolism
  • Fatigue
  • Gland Issues
  • Hormones
  • Hyperthyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Infertility
  • Osteoporosis
  • Pituitary Diseases
  • Thyroid Diseases
  • Women's Health

Certifications, License, & Education

39 Years Experience

James A Mack holds an expired medical license in the state of Montana.

Medical License

Medical Doctor with an expired medical license in the state of Montana that expired in 2025.

Education & Training

Residency

Completed their residency at Mayo Clinic And Medical School.

Medical School

Graduated from University Of Washington School Of Medicine in 1987.

NPI Number

James A Mack's NPI number is 1669575445.

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Frequently Asked Questions

Is James Mack accepting new patients?
James Mack has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does James Mack accept virtual/telehealth appointments?
James Mack has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does James Mack accept my insurance?
You can see the insurance plans that James Mack accepts on their Vitals profile.
Which hospitals is James Mack affiliated with?
James Mack is affiliated with Billings Clinic Hospital.
Where is James Mack's office located?
James Mack's office is located at 1045 N 30th St, Billings, MT, 59101.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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