Ralph Olson, PH.D.
NPI 1790708881 · Clinical Psychologist · Marquette, MI
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ralph Olson, PH.D. is a Clinical Psychologist provider in Marquette, MI (NPI 1790708881).
Provider details
- NPI number
- 1790708881
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 6301008509 (MI)
Specialties & taxonomies
Behavioral Health & Social 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
- 2006-07-26
- Last updated
- 2011-01-03
Frequently asked questions
- What is Ralph Olson's NPI number?
- Ralph Olson's National Provider Identifier (NPI) is 1790708881, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ralph Olson's specialty?
- Ralph Olson is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Ralph Olson located?
- Ralph Olson's practice location on file with NPPES is 220 W Washington St, Marquette, MI 49855-4359.
- What is Ralph Olson's phone number?
- The practice phone number listed in the NPPES registry for Ralph Olson is (906) 225-5462.
- Does Ralph Olson accept Medicare?
- Ralph Olson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ralph Olson's NPI active?
- Yes — Ralph Olson's NPI (1790708881) is active in the NPPES registry as of the last update on 2011-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.