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

Mark J Oppenheimer, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1689640187

Mark J Oppenheimer, MD is an Endocrinology, Diabetes & Metabolism Physician in Sioux Falls, South Dakota. Licensed in South Dakota. Registered with an NPI since 2006.

Licensed in
SD
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3926 S Western Ave
Sioux Falls, SD 57105-6513
Phone: (605) 275-6525
Fax: (605) 275-6970
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 2757 (SD)

Record details

NPI number1689640187
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 24, 2006
Last updated in NPPESFebruary 21, 2013

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