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

Richard D. Allen, DDS, PC

Organization Endodontics · NPI 1205962594

Richard D. Allen, DDS, PC is an Endodontics in Sioux Falls, South Dakota. Licensed in South Dakota. Registered with an NPI since 2007.

Licensed in
SD
In the registry since
2007
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1704 S Cleveland Ave Ste 6
Sioux Falls, SD 57103-3902
Phone: (605) 221-0218
Fax: (605) 221-0220
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endodontics (primary) Taxonomy 1223E0200X · Licence M850 (SD)

Record details

NPI number1205962594
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Tammra Or Richard Allen — Office Manager Or D.D.S. President · (605) 221-0218
NPI enumeratedFebruary 23, 2007
Last updated in NPPESAugust 22, 2020
Mailing address1704 S Cleveland Ave, Suite 6, Sioux Falls, SD 57103-3902

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