Abby Irene Kolthoff, ARNP
Psychiatric/Mental Health Nurse Practitioner · Waterloo, IA
Abby Irene Kolthoff, ARNP is a psychiatric/mental health nurse practitioner with a practice address in Waterloo, Iowa, and NPI 1184056822, issued on Aug 5, 2013. Check the license (Iowa G171685, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Abby Irene Kolthoff
- Credential
- ARNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License numbers
- G171685 IA
P49107 IA
Self-reported in NPPES; status is on the state search - Practice location
- 3251 W 9TH St, Waterloo, IA 50702
- Phone
- (319) 234-2893
- Enumerated
- Aug 5, 2013
- Record last updated
- Nov 2, 2022
- Fax
- (319) 234-0354
- Medicaid ID
- 0074435 IA
- Medicare enrollment
- Enrolled (PECOS I20230503001497); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 612 in Iowa → Look up another NPI →
Also registered at 3251 W 9TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Joyce Andresen, LISWClinical Social Worker1538314018
- Richard Anfinson, LISWClinical Social Worker1730269432
Verify Abby Irene Kolthoff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license G171685Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average psychiatric/mental health nurse practitioner in 2024
3,149 Medicare Part D claims for 216 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Clonazepam198 claims
- Vraylar183 claims
- Trazodone Hcl171 claims
- Invega Sustenna137 claims
- Lorazepam134 claims
- Quetiapine Fumarate130 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,303.61
280 payments; by number, the most common kind was food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Black Hawk-Grundy Mental Health Center IncWaterloo, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Abby Irene Kolthoff among 612 psychiatric/mental health nurse practitioner records in Iowa
Abby Irene Kolthoff, ARNP is one of 612 psychiatric/mental health nurse practitioner records with a practice address in Iowa. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 21% of them.
- NPI issued2013 · 21% of these records are older, 76% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2002 · median 2021 among the 398 with a school on file
- Record last updated2022 · 28% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 psychiatric/mental health nurse practitioner records list a practice address in Waterloo
They are 26 of the 1,512 NPPES records with a practice address in Waterloo, and 612 psychiatric/mental health nurse practitioner records in Iowa.
All 612 in Iowa → Every provider in Waterloo → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Joanna Anderson, PMHNPWaterloo, IA 507021295554822
- Robert Boyle, APRNWaterloo, IA 507021346557550
- Nicole Delagardelle, ARNPWaterloo, IA 507021255823506
- Donna Dobson-Tobin, NP, APRNWaterloo, IA 507021245227099
- Stephanie Giesler, PMHNPWaterloo, IA 507021750845954
- Cyd Grafft, ARNPWaterloo, IA 507021477633188
- Timothy Hoffmann, ARNPWaterloo, IA 507021902792856
- Evans Komen, DNP,PMHNP-BCWaterloo, IA 507021003216839
Common questions
What is Abby Irene Kolthoff, ARNP's NPI number?
Abby Irene Kolthoff, ARNP's National Provider Identifier (NPI) is 1184056822, issued on Aug 5, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Abby Irene Kolthoff, ARNP located?
The NPPES record lists a practice address at 3251 W 9TH St, Waterloo, IA, 50702. Phone: (319) 234-2893. Providers update this record themselves, so call before visiting.
How can I verify Abby Irene Kolthoff, ARNP's license?
NPPES lists Iowa license number G171685, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Abby Irene Kolthoff, ARNP prescribe under Medicare Part D?
In 2024, Abby Irene Kolthoff, ARNP had 3,149 Medicare Part D claims for 216 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.