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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. Douglas Sieminski:

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  1. Qualifications
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Patient Reviews

Patient comments (7)

The overall average patient rating of Dr. Douglas Sieminski, Family Practitioner is Excellent. Dr. Sieminski has been reviewed by 32 patients who have provided 7 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.3
Promptness 4.5
Courteous Staff 4.1
Accurate Diagnosis 4.8
Bedside Manner 4.9
Spends Time with Me 4.8
Follows Up After Visit 4.6

Education & Awards

Dr. Sieminski graduated from New York Institute of Technology, Old Westbury. He has 7 awards.

Patients' Choice 5th Anniversary Award (2012 - 2015)
Patients' Choice Award (2008 - 2015)
Compassionate Doctor Award - 5 Year Honoree (2014 - 2015)
Compassionate Doctor Recognition (2010 - 2015)
Bridges to Excellence Recognition
Bridges to Excellence Medical Home Recognition (2013 - 2016)
Level III
NCQA Physician Practice Connections - Patient Centered Medical Home (2013 - 2016)
On-Time Doctor Award (2015)


Dr. Sieminski has 3 hospital affiliations:

  • Newton Memorial Hospital 
  • St. Clare's Hospital-Denville 
  • St. Clare's Hospital-Sussex 


  • English

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Additional Information
Dr. Douglas P Sieminski DO is a male Family Practitioner, has 9 years of experience and practices in Family Medicine.
Where does Dr. Douglas P. Sieminski practice?
Dr. Douglas Sieminski has 1 office location.
Dr. Douglas Sieminski practices Family Medicine near Newton, NJ.
See Newton Family Physicians.