Darrin Tonsfeldt
Psychologist · Fargo, ND
Darrin Tonsfeldt is a psychologist with a practice address in Fargo, North Dakota, and NPI 1437460987, issued on Jun 30, 2010. Check the license (North Dakota 443-5-1-00, as entered in NPPES) with the North Dakota board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Darrin Tonsfeldt
- Primary taxonomy
- Psychologist 103T00000X
- License numbers
- 443-5-1-00 ND
443-5-1-00-337 ND
3591 MN
Self-reported in NPPES; status is on the state search - Practice location
- 417 Main Ave Ste 302, Fargo, ND 58103
- Phone
- (701) 541-5831
- Enumerated
- Jun 30, 2010
- Record last updated
- Feb 15, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (701) 235-6706
- Medicare enrollment
- Enrolled (PECOS I20241015003425); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychologist records → All 143 in North Dakota → Look up another NPI →
Verify Darrin Tonsfeldt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich North Dakota board licenses this profession
Search for license 443-5-1-00Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Darrin Tonsfeldt among 143 psychologist records in North Dakota
Darrin Tonsfeldt is one of 143 psychologist records with a practice address in North Dakota. 34% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2010, is newer than 52% of them.
- NPI issued2010 · 52% of these records are older, 45% newer
- In a Medicare fileNo · 34% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1988 · median 2010 among the 54 with a school on file
- Record last updated2019 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a North Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in North Dakota
There are 143 psychologist records in North Dakota. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 143 in North Dakota → Every provider in Fargo → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Stacey Benson, PSY DFargo, ND 581031164457040
- Mark Hanson, PSYCHOLOGISTFargo, ND 581031255504379
- David Hartson, PHD PSYCHOLOGISTFargo, ND 581031982707543
- Gregory Hauge, PHDFargo, ND 581031063443729
- Nadine HillesheimFargo, ND 581031265577746
- Cheryl Hysjulien, PSYD LPFargo, ND 581031750330338
- Amy Meidinger, PH.DFargo, ND 581031265612204
- Amy Ochsendorf, PSYDFargo, ND 581031831346873
Common questions
What is Darrin Tonsfeldt's NPI number?
Darrin Tonsfeldt's National Provider Identifier (NPI) is 1437460987, issued on Jun 30, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Darrin Tonsfeldt located?
The NPPES record lists a practice address at 417 Main Ave Ste 302, Fargo, ND, 58103. Phone: (701) 541-5831. Providers update this record themselves, so call before visiting.
How can I verify Darrin Tonsfeldt's license?
NPPES lists North Dakota license number 443-5-1-00, as entered by the provider. Search the North Dakota board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.