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About Dr John Hamer
Dr John Hamer is a company based in Hinsdale, Illinois, United States, operating in Healthcare provider, employing 1-5 people, reporting $0M-$1M in annual revenue and classified under Offices of Physicians (except Mental Health Specialists).
Its primary NAICS classification is 621111 (Offices of Physicians (except Mental Health Specialists)). Dr John Hamer is one of 175,537 Healthcare & Life Science companies listed in Illinois.
Business Contact Information
- Phone
- +1 (630) 8567000
- Address
- 120 N Oak St, Hinsdale, Illinois, 60521, United States
Industry & Classification
- Industry
- Healthcare & Life Science
- Sector
- Healthcare provider
NAICS Codes
- 62Health Care and Social Assistance
- 6211Offices of Physicians
- 621111Offices of Physicians (except Mental Health Specialists)
SIC Codes
- 80Health Services
- 801Offices And Clinics Of Doctors Of Medicine
- 8011Offices of Physicians, Mental Health Specialists
Company Details
- Employees
- 5 (1-5)
- Annual Revenue
- $180,000 ($0M-$1M)
Dr John Hamer: frequently asked questions
What does Dr John Hamer do?
Dr John Hamer is a company based in Hinsdale, Illinois, United States, operating in Healthcare provider, employing 1-5 people, reporting $0M-$1M in annual revenue and classified under Offices of Physicians (except Mental Health Specialists).
Where is Dr John Hamer located?
Dr John Hamer is headquartered at 120 N Oak St, Hinsdale, Illinois, 60521, United States.
How many employees does Dr John Hamer have?
Dr John Hamer has about 5 employees (the 1-5 range).
What is Dr John Hamer's annual revenue?
Dr John Hamer's annual revenue is estimated at $180,000 (the $0M-$1M range).
What industry is Dr John Hamer in?
Dr John Hamer is in the Healthcare & Life Science / Healthcare provider industry, and its primary NAICS code is 621111 (Offices of Physicians (except Mental Health Specialists)).
How can I contact Dr John Hamer?
Its phone number is +1 (630) 8567000.
What companies are similar to Dr John Hamer?
Other large healthcare & Life Science companies in Illinois include CommonSpirit Health, McDonald's Corp, Advocate Aurora Health and Northwestern Medicine.
Largest healthcare & life science companies in Illinois
Largest companies in Illinois
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Manufacturing sales in Illinois, 2026
In Illinois, Factur's 2026 study counted 74 manufacturing quotes worth $11.8M and 14 purchase orders over 12 months: 19% of quotes became orders, against 21% nationally. See the Illinois data.
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