Doctor profile · Federal record

Dr. Abby Kolthoff, ARNP

Psychiatric/Mental Health Nurse Practitioner (CMS: Nurse Practitioner) · Licensed Practical Nurse · Waterloo, IA

  • NPI 1184056822
  • Accepts Medicare
  • 24 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
3251 W 9Th St
Waterloo, IA 507025310
(319) 234-2893
fax (319) 234-0354

Credentials & registration

NPPES · NUCC
NPI registered
August 2013 — 13 yrs on file
Profile last updated
November 2, 2022
Year of graduation
2002 — 24 yrs since
Specialty taxonomy
363LP0808X — NUCC code
State licenses (2)
Iowa #G171685 · Iowa #P49107
Medicaid
IA #0074435

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1184056822. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$2,304
Transactions
280
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Neurocrine Biosciences, Inc. 94 $465.42
Alkermes, Inc. 24 $358.12
Janssen Pharmaceuticals, Inc 47 $330.73
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) 34 $309.49
Otsuka America Pharmaceutical, Inc. 24 $263.76
ABBVIE INC. 34 $204.63
Corium, LLC 11 $102.93
Axsome Therapeutics, Inc. 3 $78.13
Teva Pharmaceuticals USA, Inc. 3 $76.69
Lundbeck LLC 1 $29.59
Supernus Pharmaceuticals, Inc. 1 $20.54
Itamar Medical Inc 1 $19.79
HARMONY BIOSCIENCES LLC 1 $15.75
IDORSIA PHARMACEUTICALS US INC 1 $14.60
Vanda Pharmaceuticals Inc. 1 $13.44

By nature of payment

Food and Beverage
$2,291
Education
$12

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
619
Patients
54
Total drug cost
$135,112
Drug Type Claims Patients Total cost
Alprazolam Generic 102 21 $701
Clonazepam Generic 87 20 $743
Vraylar (Cariprazine Hcl) Brand 80 13 $117,357
Duloxetine Hcl Generic 41 0 $638
Quetiapine Fumarate Generic 36 0 $505
Sertraline Hcl Generic 35 0 $236
Aripiprazole Generic 32 0 $11,773
Lorazepam Generic 32 0 $194
Hydroxyzine Pamoate Generic 30 0 $765
Escitalopram Oxalate Generic 29 0 $270

Frequently asked questions

Auto-generated from federal data
What is Dr. Abby Kolthoff's medical specialty?
Dr. Abby Kolthoff practices Psychiatric/Mental Health Nurse Practitioner in Waterloo, IA.
Where does Dr. Abby Kolthoff practice?
Dr. Abby Kolthoff practices at 3251 W 9Th St, Waterloo, IA 507025310. Office phone: 3192342893.
What is Dr. Abby Kolthoff's NPI?
Dr. Abby Kolthoff's National Provider Identifier (NPI) is 1184056822, issued by NPPES.
Does Dr. Abby Kolthoff accept Medicare assignment?
Yes. Dr. Abby Kolthoff accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.