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Dr. John Croghan, MD
Internist, Geriatric Specialist (elderly care), Rheumatologist
26 years of experience

Video profile
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. John Croghan:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. John Croghan is Good. Dr. Croghan has been reviewed by 11 patients who have provided 2 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.0
Promptness 4.0
Courteous Staff 4.0
Accurate Diagnosis 3.7
Bedside Manner 3.4
Spends Time with Me 3.4
Follows Up After Visit 3.7

Specialties & Research

Dr. John Croghan, MD is board certified in Internal Medicine, Geriatric Medicine, and Rheumatology.

  • He has special expertise in 9 areas:
  • Alzheimer's Disease
  • Arthritis
  • Hip Osteoarthritis
  • Knee Osteoarthritis
  • Osteoarthritis (Hand and Wrist)
  • Osteoporosis
  • Rheumatic Diseases
  • Rheumatoid Arthritis
  • Rheumatology

Education & Awards

Dr. Croghan graduated from Rush Medical College, Chicago.


Dr. Croghan has 9 hospital affiliations:

  • Evanston Hospital 
  • Skokie Hospital 


  • English

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Additional Information
Dr. John Croghan MD is a male Internist, has 26 years of experience and practices in Internal Medicine, Geriatric Medicine, and Rheumatology.
Where does Dr. John Croghan practice?
Dr. John Croghan has 1 office location.
Dr. John Croghan practices Internal Medicine, Geriatric Medicine, and Rheumatology near Winnetka, IL.
See Winnetka Internists, Winnetka Geriatric Doctors, and Winnetka Rheumatologists.