Summary

Dr. Gary Hammer is a board-certified physician specializing in endocrinology, diabetes and metabolism, with additional expertise in internal medicine and oncology. He earned his medical degree from Tufts University School of Medicine and brings 34 years of clinical experience to his practice. Dr. Hammer communicates with patients in English.

Dr. Hammer practices at Von Voigtlander Women's Hospital in Ann Arbor, Michigan, and maintains affiliations with University of Michigan C.S. Mott Children's Hospital and the University of Michigan Health System. His clinical focus includes treating complex conditions such as neuroblastoma and mood disorders in children. He performs diagnostic imaging procedures including CT scans of the abdomen and specialized pancreas scans. Patients have given Dr. Hammer an average rating of 4.3 stars for his care.

Overview based on verified provider data

Quick Facts

  • 4.3
  • 34 years of experience
  • speaks English
  • Tufts University School Of Medicine
  • 2 written reviews
  • 3 specialties
  • 23 areas of expertise
  • 3 board certifications
  • 3 hospital affiliations
  • 1 office location
  • Male

Patients’ Perspective

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

Office Location

Von Voigtlander Womens Hospital

1540 E Hospital DrAnn Arbor, MI 48109

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Dr. Gary Douglas Hammer, MD
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Dr. Gary Douglas Hammer, MDDr. Martin John StevensDr. Frank Cackowski, MDDr. Oluwayemisi Adetumo, MD
Endocrinology, Diabetes & MetabolismInternal MedicineInternal MedicineInternal Medicine
4.3 
34 Years of Experience 43 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English
Ann Arbor , MIAnn Arbor , MIAnn Arbor , MIAnn Arbor , MI
Med School: Tufts University School Of Medicine Med School: University Of Wales School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Gary Douglas Hammer

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Gary Douglas Hammer has the following 3 specialties

Specialty Expertise

Dr. Gary Douglas Hammer has the following 23 areas of expertise

  • Acromegaly
  • Addison Disease
  • Adrenal Cortex Cancer
  • Adrenal Gland Cancer
  • Adrenal Gland Diseases
  • Adrenal Insufficiency
  • Cushing Disease
  • Diabetes
  • Diabetes (Types I & II)
  • Diabetes Mellitus, Type 1
  • Endocrinology
  • Fatigue
  • Gland Issues
  • Hormones
  • Hyperplasia
  • Hyperthyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Internal Medicine
  • Oncology
  • Pituitary Diseases
  • Pituitary Gland Cancer
  • Ulcerative Colitis

Certifications, License, & Education

34 Years Experience

Dr. Gary Douglas Hammer holds an expired medical license in the state of Michigan.

Medical License

Medical Doctor with an expired medical license in the state of Michigan that expired in 2026.

Education & Training

Medical School

Graduated from Tufts University School Of Medicine in 1992.

NPI Number

Dr. Hammer's NPI number is 1871676791.

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Frequently Asked Questions

Where is Dr. Gary Hammer's office located?
Dr. Gary Hammer's office is located at 1540 E Hospital Dr, Ann Arbor, MI, 48109.
What languages does Dr. Gary Hammer speak?
Dr. Gary Hammer speaks English.
Does Dr. Gary Hammer accept virtual/telehealth appointments?
Dr. Gary Hammer has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Dr. Gary Hammer accepting new patients?
Dr. Gary Hammer has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. Gary Hammer?
You can find contact information for Dr. Gary Hammer here on Vitals.

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