Knowlton, O'Neill & Associates, P.C.
NPI 1538198759 · Psychologist · West Fargo, ND
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Knowlton, O'Neill & Associates, P.C. is a Psychologist organization in West Fargo, ND (NPI 1538198759).
Provider details
- NPI number
- 1538198759
- Entity type
- Organization
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Holly Hegstad, President/Clinical Psychologist(701) 364-0060
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
- 2006-07-01
- Last updated
- 2024-03-19
- Certified
- 2024-03-19
Frequently asked questions
- What is Knowlton, O'Neill & Associates, P.C.'s NPI number?
- Knowlton, O'Neill & Associates, P.C.'s National Provider Identifier (NPI) is 1538198759, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Knowlton, O'Neill & Associates, P.C.?
- Knowlton, O'Neill & Associates, P.C. is classified in the NPPES registry as Psychologist (Behavioral Health & Social Service Providers).
- Where is Knowlton, O'Neill & Associates, P.C. located?
- Knowlton, O'Neill & Associates, P.C.'s practice location on file with NPPES is 1401 13th Ave E, West Fargo, ND 58078-3468.
- What is Knowlton, O'Neill & Associates, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Knowlton, O'Neill & Associates, P.C. is (701) 364-0060.
- Does Knowlton, O'Neill & Associates, P.C. accept Medicare?
- Knowlton, O'Neill & Associates, P.C. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Knowlton, O'Neill & Associates, P.C.?
- The authorized official listed on Knowlton, O'Neill & Associates, P.C.'s NPPES record is Holly Hegstad, President/Clinical Psychologist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Knowlton, O'Neill & Associates, P.C.'s NPI active?
- Yes — Knowlton, O'Neill & Associates, P.C.'s NPI (1538198759) is active in the NPPES registry as of the last update on 2024-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.