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.
Great experience!!
Rated 5 out of 5 stars
(3 days ago)
Nov-2026
I trust Dr. Sieminski’s judgement
Rated 5 out of 5 stars
(4 days ago)
Nov-2026
The best knowledgeable man with medicine I know.
Rated 5 out of 5 stars
(4 days ago)
Nov-2026
Dr. Sieminski is a great caring Doctor. So he called me right away when I had a test results that really needs to be addressed quickly. He is the only doctor that caught that.
Rated 5 out of 5 stars
(6 days ago)
Nov-2026
Dr sieminski is the best!!
Rated 5 out of 5 stars
(6 days ago)
Nov-2026
Kind, knowledgeable and personable.
Rated 5 out of 5 stars
(2 weeks ago)
Oct-2026
Very warm caring and understanding. He has been a very knowledgeable Doctor in all my experience with him. I would highly recommend him as your PCP. The whole practice and staff are warm and welcoming.
Rated 5 out of 5 stars
(2 weeks ago)
Oct-2026
As always my visit with Dr Siemenski was productive. I never have more than a 5 minute wait, staff is nice and Dr Siemenski is the best ! He listens, and has taken great care of me for 20 years !!!
Rated 5 out of 5 stars
(2 weeks ago)
Oct-2026
Friendly, courteous and efficient!
Rated 5 out of 5 stars
(3 weeks ago)
Oct-2026
Dr. Sieminski takes his time, is always very thorough and answers all questions.
Rated 5 out of 5 stars
(3 weeks ago)
Oct-2026
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.
See other doctors in Skylands Medical Group Andover
Great experience!!
I trust Dr. Sieminski’s judgement
The best knowledgeable man with medicine I know.
Dr. Sieminski is a great caring Doctor. So he called me right away when I had a test results that really needs to be addressed quickly. He is the only doctor that caught that.
Dr sieminski is the best!!
Kind, knowledgeable and personable.
Very warm caring and understanding. He has been a very knowledgeable Doctor in all my experience with him. I would highly recommend him as your PCP. The whole practice and staff are warm and welcoming.
As always my visit with Dr Siemenski was productive. I never have more than a 5 minute wait, staff is nice and Dr Siemenski is the best ! He listens, and has taken great care of me for 20 years !!!
Friendly, courteous and efficient!
Dr. Sieminski takes his time, is always very thorough and answers all questions.