What is the difference between a counselor, a social worker and a psychologist?

Each holds a different Colorado license, and the state's lookup shows which one a person holds. Professional counselors are trained in counseling, clinical social workers in clinical social work, family therapists in couples and family therapy, and psychologists hold a doctorate in psychology. Colorado also licenses social workers who are not clinical social workers, and this list leaves them out.

Where does the list of Colorado therapists come from?

It comes from the Colorado Department of Regulatory Agencies' open license data , which the department refreshes every night, and from the federal NPI registry. A person is listed only when both records show the same license number and the same name.

Licensed therapists in Thornton, CO

Here are 9 licensed therapists in Thornton, Colorado, checked against the state's own records.

Q: How do I check that a Colorado therapist is licensed?

Open the state's license lookup , choose the profession, search by the license number or the name and finish the security check. The result should show an active license of the type you expect. Every profile in this list links to the same lookup.

Thornton has 9 licensed therapists on this list: 3 professional counselors, 3 clinical social workers, 2 psychologists and 1 family therapist. Each holds an active Colorado license, and each name opens a page that links to the state's record and to the federal NPI registry, so you can check both yourself.

9
therapists listed
4
license types
20
Colorado towns

Read from the Colorado license list of October 28, 2026 and the federal registry on October 28, 2026.

See every listed town in Colorado.

Thornton on the map of Colorado

These are the 9 licensed therapists listed in Thornton.

Open any name to see the license number, the federal NPI and the links to check both.

Charleanea Arellano
Licensed Psychologist
Thornton, Colorado
License PSY.0001902
Public license record Active
Aaron Cordova, LPC
Licensed Professional Counselor
Thornton, Colorado
License LPC.0003443
Public license record Active
Alyssa Landry, LPC
Licensed Professional Counselor
Thornton, Colorado
License LPC.0022231
Public license record Active
Adrienne Marsh, LCSW
Licensed Clinical Social Worker
Thornton, Colorado
License CSW.09923196
Public license record Active
Joanna McTevia, LCSW
Licensed Clinical Social Worker
Thornton, Colorado
License CSW.09924323
Public license record Active
Linda Osterlund, LMFT
Licensed Marriage and Family Therapist
Thornton, Colorado
License MFT.0000693
Public license record Active
Courtney Thom, LCSW
Licensed Clinical Social Worker
Thornton, Colorado
License CSW.09926089
Public license record Active
Anne Marie Vang, LPC
Licensed Professional Counselor
Thornton, Colorado
License LPC.0022706
Public license record Active
Cari Whitlock
Licensed Psychologist
Thornton, Colorado
License PSY.0005893
Public license record Active

The federal registry lists 324 people in Thornton with these license types.

9 of them are listed on this page, and the bars show how the federal registry splits them by license type.

324

people in Thornton with these four license types

Counselors178
Clinical social workers120
Psychologists12
Marriage and family therapists21

Source: the federal NPI registry, read October 28, 2026, counting providers with a Thornton practice address and a Colorado license number.

These listed towns are the closest to Thornton.

You can check any Colorado license in three steps.

1
Find the license number
It is on the therapist's page, card or letter, and on every profile here.
2
Open the state's lookup
Search by the license number and finish the security check.
3
Match the name and status
The name, the license type and the word Active should all agree.

Open Colorado's license lookup

In Colorado, the document a landlord looks to is a letter from a licensed clinician.

A licensed therapist who knows you can write the letter. The Colorado guide on this site explains what the state asks of the clinician before they write it, and how to ask a landlord for the accommodation.

A therapist in a cream sweater at her desk, smiling at a laptop during a video call

Every listing is built from two government records.

Federal

NPI registry

Name and credential
NPI number
Taxonomy
Practice city and state

State

CO license record

License number
License type
Active status
Expiry date

This page

Same facts, same places

Links back to both records
No contact details
Dated by when each record was read

License data: Colorado Department of Regulatory Agencies (DORA), data.colorado.gov (Public Domain). NPI data: CMS NPPES.

The data made available here has been modified for use from its original source, which is the State of Colorado. THE STATE OF COLORADO MAKES NO REPRESENTATIONS OR WARRANTY AS TO THE COMPLETENESS, ACCURACY, TIMELINESS, OR CONTENT OF ANY DATA MADE AVAILABLE THROUGH THIS SITE. THE STATE OF COLORADO EXPRESSLY DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. The data is subject to change as modifications and updates are complete. It is understood that the information contained in the Web feed is being used at one's own risk.

People often ask these questions about therapists in Colorado.

Open the state's license lookup, choose the profession, search by the license number or the name and finish the security check. The result should show an active license of the type you expect. Every profile in this list links to the same lookup.