Dennis Olson, M.D.
NPI 1841397254 · Specialist · Thornton, CO
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis Olson, M.D. is a Specialist provider in Thornton, CO (NPI 1841397254).
Provider details
- NPI number
- 1841397254
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 16794 (CO)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-09-20
- Last updated
- 2021-12-28
- Certified
- 2021-12-28
Frequently asked questions
- What is Dennis Olson's NPI number?
- Dennis Olson's National Provider Identifier (NPI) is 1841397254, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Olson's specialty?
- Dennis Olson is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Dennis Olson located?
- Dennis Olson's practice location on file with NPPES is 9141 Grant St Ste B40, Thornton, CO 80229-4367.
- What is Dennis Olson's phone number?
- The practice phone number listed in the NPPES registry for Dennis Olson is (303) 452-7700.
- Does Dennis Olson accept Medicare?
- Dennis Olson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis Olson's NPI active?
- Yes — Dennis Olson's NPI (1841397254) is active in the NPPES registry as of the last update on 2021-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.