Dr. John Demchak, DO

Dr. John Demchak, DO

Internal Medicine  |  
Male  |  
Age 50
Dr. John Demchak, DO is an internal medicine specialist in Rock Hill, SC and has been practicing for 22 years. He graduated from Philadelphia Coll Of Osteo Med in 1993 and specializes in internal medicine.

2670 Mills Park Dr

Rock Hill, SC 29732

Contact Information

(803) 366-4848

Learn about Dr. Demchak

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Dr. Demchak's Experience

Dr. Demchak's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Internal Medicine
  • Board certified in Internal Medicine
  • No sanctions found
  • No board actions found


  • Internal Medicine

Board Certifications

  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

Conditions Treated

Background Check

Malpractice Claims not available

Healthgrades does not collect malpractice information for South Carolina.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Philadelphia Coll Of Osteo Med
    Medical School | Graduated 1993
  • Naval Mc Portsmouth
    Internship Hospital | Completed 1994
  • Naval Mc Portsmouth
    Residency Hospital | Completed 1996

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Demchak has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Demchak does not have any memberships or affiliations listed. If you are Dr. Demchak and would like to add memberships or affiliations, please update your profile.

Dr. Demchak's Reviews

Likelihood of recommending Dr. Demchak to family and friends
based on 2 total reviews (2 with comments)

Likelihood to Recommend (2)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Demchak's Performance

Explains condition(s) well
Answers Questions
Time well spent

Office & Staff Performance

Office environment
Staff friendliness
Average wait time
10 to 15 minutes

Patient Comments (2)

in Rock Hill, SC
Dr Demchack is a very knowledgeable and friendly Dr. I would recommend him without hesitation. He really helped me with all my health problems, and I’ve had more than my share Everett Collins
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in Columbia, SC
Doesn't fill prescriptions in timely manner, and is not truthful in his communications with patients. Protected as a VA doctor because no one would be a patient by choice.
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