John Halvorson, PHD
NPI 1780660670 · Clinical Psychologist · Grand Junction, CO
John Halvorson, PHD is a Clinical Psychologist provider in Grand Junction, CO (NPI 1780660670).
Provider details
- NPI number
- 1780660670
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 511 (CO)
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
20 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
- 2005-12-21
- Last updated
- 2007-11-20
Frequently asked questions
- What is John Halvorson's NPI number?
- John Halvorson's National Provider Identifier (NPI) is 1780660670, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Halvorson's specialty?
- John Halvorson is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is John Halvorson located?
- John Halvorson's practice location on file with NPPES is 1160 Patterson Rd, Grand Junction, CO 81506-8275.
- What is John Halvorson's phone number?
- The practice phone number listed in the NPPES registry for John Halvorson is (970) 244-2800.
- Is John Halvorson's NPI active?
- Yes — John Halvorson's NPI (1780660670) is active in the NPPES registry as of the last update on 2007-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.