Darrin Tonsfeldt
NPI 1437460987 · Psychologist · Fargo, ND
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Darrin Tonsfeldt is a Psychologist provider in Fargo, ND (NPI 1437460987).
Provider details
- NPI number
- 1437460987
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 443-5-1-00-337 (ND)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
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
16 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
- 2010-06-30
- Last updated
- 2019-02-15
Frequently asked questions
- What is Darrin Tonsfeldt's NPI number?
- Darrin Tonsfeldt's National Provider Identifier (NPI) is 1437460987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darrin Tonsfeldt's specialty?
- Darrin Tonsfeldt is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Darrin Tonsfeldt located?
- Darrin Tonsfeldt's practice location on file with NPPES is 417 Main Ave Ste 302, Fargo, ND 58103-1956.
- What is Darrin Tonsfeldt's phone number?
- The practice phone number listed in the NPPES registry for Darrin Tonsfeldt is (701) 541-5831.
- Does Darrin Tonsfeldt accept Medicare?
- Darrin Tonsfeldt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Darrin Tonsfeldt's NPI active?
- Yes — Darrin Tonsfeldt's NPI (1437460987) is active in the NPPES registry as of the last update on 2019-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.