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Psychologist - Clinicals in Mill Creek, WA

Browse 12 Psychologist - Clinical providers listed in NPPES with a practice address in Mill Creek, Washington.

12 Healthcare Providers

How Mill Creek compares with the U.S.

Mill Creek has 57 clinicians in Psychologist - Clinical per 100,000 residents, 2.9 times the U.S. rate of 20.

That is 12 active clinicians in Psychologist - Clinical with a practice address in Mill Creek, for a population of 20,956.

The Washington rate is 21 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. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

Too few clinicians in Psychologist - Clinical in Mill Creek 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 Registry addresses can be out of date.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. Susan Johannsen , PsyD

Psychologist - Clinical

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
15418 Maint Street, Suite 303a, Mill Creek, WA 98012
Phone: 4253395453
NPI Identifier 1063026417
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Dr. Megan C. Merriwether , PhD, CDP

Psychologist - Clinical

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
15418 Main St, Suite 303, Mill Creek, WA 980129030
Phone: 4253395453
NPI Identifier 1225209190
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Dr. David Grant Rasmussen , PsyD

Psychologist - Clinical

Active NPI Status Accepts Medicare Assignment
16030 Bothell Everett Hwy, Suite 295, Mill Creek, WA 980121741
Phone: 4253377133
NPI Identifier 1699830364
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Dr. Adrianne Michelle Altman , PhD

Psychologist - Clinical

Active NPI Status
15408 Main St, Suite 107, Mill Creek, WA 980129024
Phone: 4252245458
NPI Identifier 1730365776
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Dr. Matthew Ralph De Haan , PsyD

Psychologist - Clinical

Active NPI Status
16000 Bothell Everett Hwy, Suite 340, Mill Creek, WA 980121742
Phone: 4257807184
NPI Identifier 1578870648
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Dr. Stephanie Marie Garrison , PsyD

Psychologist - Clinical

Active NPI Status Accepts Medicare Assignment
15418 Main St, Mill Creek, WA 980129030
Phone: 4253395453
NPI Identifier 1558599274
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Dr. Barbara J. Graham , PhD

Psychologist - Clinical

Active NPI Status
16000 Bothell Everett Hwy, Suite 360, Mill Creek, WA 980121742
Phone: 2068562056
NPI Identifier 1528390424
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Dr. Jennifer Marie Gross , PsyD

Psychologist - Clinical

Active NPI Status
15418 Main St, Mill Creek, WA 980129030
Phone: 4253395453
NPI Identifier 1023197951
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Dr. Christian Michael Quayle , PhD

Psychologist - Clinical

Active NPI Status Accepts Medicare Assignment
15418 Main St, Suite 301, Mill Creek, WA 980129030
Phone: 4253853262
NPI Identifier 1558438952
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Dr. Caroline Lea Rinke , PhD

Psychologist - Clinical

Active NPI Status Accepts Medicare Assignment
15418 Main Street, Suite 301, Mill Creek, WA 980129030
Phone: 4253853262
NPI Identifier 1346318847
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Dr. Sue Anne Slade , PhD

Psychologist - Clinical

Active NPI Status
15418 Main Street, Suite 301, Mill Creek, WA 980127361
Phone: 4253853262
NPI Identifier 1124196951
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Dr. Justin Steffener , PsyD

Psychologist - Clinical

Active NPI Status Accepts Medicare Assignment
15418 Main St, Mill Creek, WA 980129030
Phone: 4253395453
NPI Identifier 1013218767
View Full Profile

Frequently Asked Questions about Psychologist - Clinical in Mill Creek

How do I check a Psychologist - Clinical 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 Washington 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.