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

Mr. Nathaniel Christian Oncken, DC

Individual provider Chiropractor · NPI 1447211214

Mr. Nathaniel Christian Oncken, DC is a Chiropractic in Greenwood, South Carolina. Graduated from Sherman College of Straight Chiropractic in 2005, 21 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
21
Trained at
Sherman College of Straight Chiropractic
Licensed in
SC
In the registry since
2006
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

423 Calhoun Ave B
Greenwood, SC 29649-2015
Phone: (864) 223-2224
Fax: (864) 223-2225
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 3107 (SC)

Record details

NPI number1447211214
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedMarch 31, 2006
Last updated in NPPESFebruary 23, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCHIROPRACTIC
Medical schoolSHERMAN COLLEGE OF STRAIGHT CHIROPRACTIC
Graduated 2005 (21 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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