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

Dr. Brian Clay Bak, DO

Individual provider Chiropractor · NPI 1861532913

Dr. Brian Clay Bak, DO is a Chiropractic in Watertown, South Dakota. Graduated from Northwestern College of Chiropractic in 1986, 40 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
40
Trained at
Northwestern College of Chiropractic
Licensed in
SD
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1 5th St SE
Watertown, SD 57201-3778
Phone: (605) 882-4252
Show map & directions

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

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 687 (SD)

Record details

NPI number1861532913
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedFebruary 7, 2007
Last updated in NPPESJuly 8, 2007
Mailing address1129 4th Ave Se, Watertown, SD 57201-4577

Medicare enrollment

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

Medicare specialtyCHIROPRACTIC
Medical schoolNORTHWESTERN COLLEGE OF CHIROPRACTIC
Graduated 1986 (40 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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