4.3
4 Ratings with 2 written Reviews
Summary
Dr. Gary Hammer treats neuroblastoma, hypertension, and lung cancer, and performs cortisol blood tests, cortisol urine tests, and adrenocorticotropic hormone (ACTH) tests. He practices endocrinology, diabetes and metabolism, internal medicine, and oncology, and has 34 years of experience.
He earned his medical degree from Tufts University School of Medicine and is affiliated with University of Michigan C.S. Mott Children's Hospital, Von Voigtlander Women's Hospital, and University of Michigan Health System, seeing patients in Ann Arbor, Michigan. Patients on Vitals rate Dr. Hammer 4.25 out of 5.
He earned his medical degree from Tufts University School of Medicine and is affiliated with University of Michigan C.S. Mott Children's Hospital, Von Voigtlander Women's Hospital, and University of Michigan Health System, seeing patients in Ann Arbor, Michigan. Patients on Vitals rate Dr. Hammer 4.25 out of 5.
Overview based on verified provider data
Quick Facts
- 34 years of experience
- speaks English
- Tufts University School Of Medicine
- 2 written reviews
- 3 specialties
- 23 areas of expertise
- 3 hospital affiliations
- 1 office location
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Location
Compare with Similar Doctors
 |  | |  |
| Dr. Gary Douglas Hammer, MD | Kathleen Marie Smith | Sharon Elizabeth Knotts | Ryan Samad Din |
| Endocrinology, Diabetes & Metabolism | Nurse Practitioner | Nurse Practitioner | Allergy & Immunology |
| 34 Years of Experience | 7 Years of Experience | ||
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | |||
| Ann Arbor , MI | Farmington Hills , MI | Ann Arbor , MI | Boston , MA |
| Med School: Tufts University School Of Medicine | Med School: Harvard Medical School | ||
Current Profile | View Profile | View Profile | View Profile |
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
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.
- 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.
- 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.
- What languages does Dr. Gary Hammer speak?
- Dr. Gary Hammer speaks English.
- Does Dr. Gary Hammer accept my insurance?
- You can see the insurance plans that Dr. Gary Hammer accepts on their Vitals profile.
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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