Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mr. Douglas J Weckstein, MD

Individual provider Hematology & Oncology Physician · NPI 1710971684

Mr. Douglas J Weckstein, MD is a Hematology & Oncology Physician in Concord, New Hampshire. Licensed in New Hampshire. Registered with an NPI since 2005.

Licensed in
NH
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

250 Pleasant St
Concord, NH 03301-7559
Phone: (603) 314-6879
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 10352 (NH)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 10352 (NH)

Record details

NPI number1710971684
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 7, 2005
Last updated in NPPESJanuary 15, 2024
Certification dateJanuary 15, 2024

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