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Psychologists in Sioux City, IA

Browse 12 Psychologist providers listed in NPPES with a practice address in Sioux City, Iowa.

12 Healthcare Providers

How Sioux City compares with the U.S.

Sioux City has 14 Psychologists per 100,000 residents, close to the U.S. rate of 14.

That is 12 active Psychologists with a practice address in Sioux City, for a population of 86,101.

The Iowa rate is 7.8 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places.

Too few Psychologists in Sioux City are listed in the CMS Medicare file to report Medicare assignment or telehealth shares.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Showing 1โ€“12 of 12 providers
With recent CMS data first, then Aโ€“Z

Dr. Michael P Baker , PhD

Psychologist

Active NPI Status Accepts Medicare Assignment
1106 4th St, Ste 205, Sioux City, IA 511011958
Phone: 7122521473
NPI Identifier 1760461321
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Dr. Genell G Sandberg , PhD

Psychologist

Active NPI Status
2601 Apache Ct, Sioux City, IA 511041504
Phone: 7122391111
NPI Identifier 1851375802
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Active NPI Status
2601 Apache Court, Sioux City, IA 511041594
Phone: 7122391111
NPI Identifier 1205188091
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Active NPI Status
625 Court St, Sioux City, IA 511011919
Phone: 7122523871
NPI Identifier 1154815959
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Dr. Denise Acker Marandola , PhD

Psychologist

Active NPI Status
2212 Pierce St, Ste. 100, Sioux City, IA 511043871
Phone: 7122558323
NPI Identifier 1376630277
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Dr. Dena Z Olwan , PhD

Psychologist

Active NPI Status Telehealth Services Available
401 Douglas Street, Suite 504, Sioux City, IA 511041471
Phone: 7122581000
NPI Identifier 1588648596
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Dr. Raul Sanchez , PhD

Psychologist

Active NPI Status
3930 Stadium Dr, Sioux City, IA 511065166
Phone: 7122716463
NPI Identifier 1710068002
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Active NPI Status
3920 Old Lakeport Rd, Sioux City, IA 511069508
Phone: 7122765419
NPI Identifier 1215901939
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Dr. Jeffry B. Snell , PhD

Psychologist

Active NPI Status
801 5th St # 6nw, Sioux City, IA 511011326
Phone: 7122795718
NPI Identifier 1598797771
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Dr. James V Snowden , PhD

Psychologist

Active NPI Status Accepts Medicare Assignment
401 Douglas Street, Suite 504, Sioux City, IA 511011471
Phone: 7122581000
NPI Identifier 1104800150
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Dr. Annie L Stachowitz , PhD

Psychologist

Active NPI Status
4280 Sergeant Rd Ste 225, Sioux City, IA 511064634
Phone: 7122022255
NPI Identifier 1013416874
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Dr. Clayton J. Toddy , PsyD

Psychologist

Active NPI Status
600 4th St, Sioux City, IA 511011750
Phone: 7122340220
NPI Identifier 1881634277
View Full Profile

Frequently Asked Questions about Psychologist in Sioux City

How do I check a Psychologist practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Iowa licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.