Doctor profile · Federal record

Dr. Aaron Baker, PHD

Clinical Psychologist · Mental Health Counselor · Sioux City, IA

  • NPI 1104214154
  • Accepts Medicare
  • 6 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
1106 4Th St Ste 205
Sioux City, IA 511011958
(712) 252-1473
Additional location
1551 Indian Hills Dr Ste 221
Sioux City, IA 511041857

Credentials & registration

NPPES · NUCC
NPI registered
December 2014 — 12 yrs on file
Profile last updated
May 18, 2021
Year of graduation
2020 — 6 yrs since
Specialty taxonomy
103TC0700X — NUCC code
State licenses (2)
Iowa #101471 · Iowa #076371
Medicaid
IA #1104214154

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1104214154. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
377
Distinct HCPCS
8
Medicare allowed
$28,811
HCPCS Description Services Patients Avg allowed
96137 Administration of psychological or neuropsychological test, each additional 30 minutes 92 29 $36
96133 Evaluation of neuropsychological test, each additional hour 83 28 $94
90834 Psychotherapy, 45 minutes 69 14 $78
96132 Evaluation of neuropsychological test, first hour 29 28 $123
96136 Administration of psychological or neuropsychological test, first 30 minutes 29 29 $40
96116 Exam of neurobehavioral status, first hour 28 28 $88
96121 Exam of neurobehavioral status, each additional hour 27 27 $72
90791 Psychiatric diagnostic evaluation 20 20 $158

In context: peer comparison

Among 1 peers in Sioux City Clinical Psychologist, average services per provider: 47. This provider delivers 8.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Aaron Baker's medical specialty?
Dr. Aaron Baker practices Clinical Psychologist in Sioux City, IA.
Where does Dr. Aaron Baker practice?
Dr. Aaron Baker practices at 1106 4Th St Ste 205, Sioux City, IA 511011958. Office phone: 7122521473.
What is Dr. Aaron Baker's NPI?
Dr. Aaron Baker's National Provider Identifier (NPI) is 1104214154, issued by NPPES.
Does Dr. Aaron Baker accept Medicare assignment?
Yes. Dr. Aaron Baker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Aaron Baker commonly perform?
Top Medicare-reported procedures in 2023: Administration of psychological or neuropsychological test (HCPCS 96137); Evaluation of neuropsychological test, each additional hour (HCPCS 96133); Psychotherapy (HCPCS 90834). Source: CMS Medicare Physician & Other Practitioners file.