Gregory Alan Oltmann, D.C.
Chiropractor · Tigard, OR
Gregory Alan Oltmann, D.C. is a chiropractor with a practice address in Tigard, Oregon, and NPI 1588907570, issued on Mar 28, 2013. Check the license (Oregon 5138, as entered in NPPES) with the Oregon board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory Alan Oltmann
- Credential
- D.C.
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 5138 OR
Self-reported in NPPES; status is on the state search - Practice location
- 12700 SW North Dakota St Ste 180, Tigard, OR 97223
- Phone
- (503) 716-8281
- Enumerated
- Mar 28, 2013
- Record last updated
- Jun 7, 2022
- Fax
- (037) 168-7835
- Medicare enrollment
- Enrolled (PECOS I20230316001779); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 12700 SW North Dakota St Ste 180
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Alan Oltmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 5138Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52 chiropractor records list a practice address in Tigard
They are 52 of the 3,081 NPPES records with a practice address in Tigard, and 1,881 chiropractor records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 52 in Tigard → All 1,881 in Oregon → Every provider in Tigard →
Other chiropractor records in Oregon
- Anna Abbott, DCPortland, OR1235799818
- Scott Abrahamson, D.C.Lake Oswego, OR1437363322
- Ruben Acevedo, D.C.Roseburg, OR1700445210
- Kent Achtyes, D.C.Portland, OR1659590388
- Morgan AckermannMilwaukie, OR1831872449
- Cory Adams, DCPortland, OR1386507945
- Mark Adams, D.C.Ashland, OR1225100571
- Perry Adams, D.C.Waldport, OR1134386766
- Susan Addison, DCPortland, OR1225223597
- Charles Affatato, D.C.Salem, OR1740303130
Common questions
What is Gregory Alan Oltmann, D.C.'s NPI number?
Gregory Alan Oltmann, D.C.'s National Provider Identifier (NPI) is 1588907570, issued on Mar 28, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Alan Oltmann, D.C. located?
The NPPES record lists a practice address at 12700 SW North Dakota St Ste 180, Tigard, OR, 97223. Phone: (503) 716-8281. Providers update this record themselves, so call before visiting.
How can I verify Gregory Alan Oltmann, D.C.'s license?
NPPES lists Oregon license number 5138, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.