Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Knowlton, O'Neill & Associates, PC

Organization Psychologist · NPI 1538198759

Knowlton, O'Neill & Associates, PC is a Psychologist in West Fargo, North Dakota. Registered with an NPI since 2006.

In the registry since
2006
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1401 13th Ave E
West Fargo, ND 58078-3468
Phone: (701) 364-0060
Fax: (701) 364-0065
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1538198759
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Holly Hegstad — President/Clinical Psychologist · (701) 364-0060
NPI enumeratedJuly 1, 2006
Last updated in NPPESMarch 19, 2024
Certification dateMarch 19, 2024
Mailing address1401 13th Ave E, West Fargo, ND 58078-3468

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