Gregory Oltmann, D.C.
NPI 1588907570 · Chiropractor · Tigard, OR
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Oltmann, D.C. is a Chiropractor provider in Tigard, OR (NPI 1588907570).
Provider details
- NPI number
- 1588907570
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- D.C.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5138 (OR)
Specialties & taxonomies
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-03-28
- Last updated
- 2022-06-07
- Certified
- 2022-06-07
Frequently asked questions
- What is Gregory Oltmann's NPI number?
- Gregory Oltmann's National Provider Identifier (NPI) is 1588907570, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Oltmann's specialty?
- Gregory Oltmann is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Gregory Oltmann located?
- Gregory Oltmann's practice location on file with NPPES is 12700 Sw North Dakota St Ste 180, Tigard, OR 97223-0802.
- What is Gregory Oltmann's phone number?
- The practice phone number listed in the NPPES registry for Gregory Oltmann is (503) 716-8281.
- Does Gregory Oltmann accept Medicare?
- Gregory Oltmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Oltmann's NPI active?
- Yes — Gregory Oltmann's NPI (1588907570) is active in the NPPES registry as of the last update on 2022-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.