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

Gregory Alan Oltmann, DC

Individual provider Chiropractor · NPI 1588907570

Gregory Alan Oltmann, DC is a Chiropractic in Tigard, Oregon. Qualified in 2013, 13 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
13
Licensed in
OR
In the registry since
2013
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

12700 SW North Dakota St Ste 180
Tigard, OR 97223-0802
Phone: (503) 716-8281
Fax: (037) 168-7835
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 5138 (OR)

Record details

NPI number1588907570
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedMarch 28, 2013
Last updated in NPPESJune 7, 2022
Certification dateJune 7, 2022
Mailing address4055 Sw 185th Ave Ste 200, Aloha, OR 97007-1567

Medicare enrollment

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

Medicare specialtyCHIROPRACTIC
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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