arrow
  • Family Medicine, Occupational Medicine
  • 42 years of experience
  • Corewell Health St Joseph Hospital 1234 Napier Ave, St. Joseph, MI 49085
  • (269) 983-8300

Brief Intro

Dr. Grentz graduated from the Loma Linda University School of Medicine in 1983. He works in Saint Joseph, MI and specializes in Family Medicine and Occupational Medicine. Dr. Grentz is affiliated with Sparrow Carson Hospital.

View More

Education Background

MEDICAL SCHOOL

Loma Linda University School Of Medicine - 1983

Languages Spoken

  • Spanish
  • English

Location & Hours

  • Radiology Associates Of Berrien County
  • 1234 Napier Ave, St. Joseph, MI 49085

Specialties Treated

  • Family Medicine
  • Occupational Medicine

Conditions Addressed

  • Obstructive Sleep Apnea
  • Schizophrenia
  • Vitamin D Deficiency
  • Emphysema
  • Glaucoma
  • Erectile Dysfunction (ED)
  • Anemia
  • Anxiety Phobic Disorders
  • Osteoarthritis
  • Dementia
  • Depressive Disorders
  • Diabetes Mellitus (DM)
  • Disorders of Lipoid Metabolism
  • Herpes Simplex
  • Hypertension (HTN)
  • Parkinson's Disease
  • Rheumatoid Arthritis
  • Urinary Incontinence
  • Bipolar Disorder
  • Chronic Bronchitis
  • Peripheral Nerve Disorders
  • Epilepsy
  • Hypothyroidism
  • Multiple Sclerosis (MS)
  • Alcohol Dependence
  • Obesity
  • Atrial Fibrillation and Atrial Flutter
  • Macular Degeneration
  • Gastroesophageal Reflux Disease (GERD)
  • Heart Failure
  • Benign Prostatic Hypertrophy (BPH)
  • Infectious Liver Disease
  • Malignant Neoplasm of Female Breast
View More

Insurance Accepted

* Insurance information may change frequently. Please verify directly with the provider (doctor/clinic).

  • Humana
  • Medicare
  • Priority Health
  • Blue Cross Blue Shield of Michigan
  • McLaren Health Plan
  • Medicaid
  • UnitedHealthcare
View More
  • Cancer 33
  • Cardiology, Heart & Vascular Surgery 30
  • Orthopedics 48
  • Neurology & Neurosurgery 40
  • Gastroenterology & GI Surgery 48
  • Pulmonology & Lung Surgery 53
  • Diabetes & Endocrinology 21
  • Children's Hospital 7
  • Urology 49
  • Psychiatry 51
  • Geriatrics 51
  • Rehabilitation 38
  • Obsterics & Gynecology 6
  • Ophthalmology 1
  • Ear, Nose & Throat 4
  • Rheumatology 1
  • Long Term Care 11
  • Maternity Care (Uncomplicated Pregnancy) 33