Dr. Douglas P. Sieminski, D.O., is board-certified in Family Practice through the American Board of Osteopathic Family Physicians. He earned his medical degree from New York College of Osteopathic Medicine in 2003 and completed his residency at Union Hospital in 2006, where he served as Chief Resident.
Dr. Douglas P. Sieminski, D.O., is board-certified in Family Practice through the American Board of Osteopathic Family Physicians. He earned his medical degree from New York College of Osteopathic Medicine in 2003 and completed his residency at Union Hospital in 2006, where he served as Chief Resident.
The reviews listed below were collected independently of Skylands Medical Group Andover through rater8. Each review represents an authentic and verified patient experience.
Flu Shot
(6 days ago)
Nov-2025
Professional, polite, considerate. Always direct clear communication
(1 week ago)
Nov-2025
He is the best GP. Around.
(1 week ago)
Nov-2025
He continues to provide unmatched care.
(1 week ago)
Nov-2025
Awesome Dr. Takes the time to listen to you.
(1 week ago)
Nov-2025
Always helpful & informative
(1 week ago)
Nov-2025
I’ve been seeing Dr. Sieminski for many years, and he’s exactly the kind of doctor you want as you get older—patient, thorough, and someone who actually listens. He recently treated my injured finger, and as always, he took the time to explain everything and make sure I felt cared for instead of rushed.
If you’re in NJ and want a doctor who’s skilled, compassionate, and genuinely attentive, he’s the one to see. My finger might be injured, but my trust in Dr. Sieminski is in perfect health.
Five stars—two thumbs up… plus one very well-supported finger. 👍🩹
(1 week ago)
Nov-2025
Love my doctor, he most likely saved my life twice by reading my blood work.
(1 week ago)
Nov-2025
Best dr
(1 week ago)
Nov-2025
Smart and kind.
(2 weeks ago)
Nov-2025
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Skylands Medical Group Andover
33 Newton-Sparta Road Suite 1 Newton, NJ 07860
Dr. Douglas P. Sieminski, D.O., graduated from New York College of Osteopathic Medicine, Old Westbury, New York, in May 2003. He completed his residency training in Family Practice in June 2006 at Union Hospital (Affiliate of St. Barnabas Health Care System), Union, New Jersey, where he was the Chief Resident from 2004 to 2006. He also completed his internship at Union Hospital in June 2004. Dr. Sieminski attended Drew University, Madison, New Jersey, where he received a Bachelor of Arts Degree in Biology in May 1999.
Dr. Sieminski is Board Certified in Family Practice through the American Board of Osteopathic Family Physicians. He is a member of the American Osteopathic Association, American College of Osteopathic Family Practitioners, and New Jersey Association of Osteopathic Physicians and Surgeons.
Flu Shot
Professional, polite, considerate. Always direct clear communication
He is the best GP. Around.
He continues to provide unmatched care.
Awesome Dr. Takes the time to listen to you.
Always helpful & informative
I’ve been seeing Dr. Sieminski for many years, and he’s exactly the kind of doctor you want as you get older—patient, thorough, and someone who actually listens. He recently treated my injured finger, and as always, he took the time to explain everything and make sure I felt cared for instead of rushed. If you’re in NJ and want a doctor who’s skilled, compassionate, and genuinely attentive, he’s the one to see. My finger might be injured, but my trust in Dr. Sieminski is in perfect health. Five stars—two thumbs up… plus one very well-supported finger. 👍🩹
Love my doctor, he most likely saved my life twice by reading my blood work.
Best dr
Smart and kind.