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Psychologists in Boulder, CO

Browse 82 Psychologist providers listed in NPPES with a practice address in Boulder, Colorado.

82 Healthcare Providers

How Boulder compares with the U.S.

Boulder has 77 Psychologists per 100,000 residents, 5.4 times the U.S. rate of 14.

That is 82 active Psychologists with a practice address in Boulder, for a population of 106,433.

The Colorado rate is 17 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.

86% of Psychologists in Boulder listed in the CMS Medicare file (12 of 14) accept Medicare assignment. That is similar to the Colorado share of 85%.

Only 14 of 82 active Psychologists in Boulder appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

71% of Psychologists in Boulder listed in the CMS Medicare file (10 of 14) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Colorado share of 43%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

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. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Psychologist Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Psychologist practitioners in Boulder, CO

Source: CMS PECOS
PECOS Enrolled Specialists 16 In Boulder, CO
Part B Lab & Imaging Eligible 19 Diagnostic Referrals
DME Ordering Eligible 19 Durable Medical Equipment
Home Health Agency Referrals 0 HHA Ordering Eligible
Showing 1โ€“20 of 82 providers
With recent CMS data first, then Aโ€“Z
Active NPI Status Accepts Medicare Assignment Telehealth Services Available
350 Broadway St, Ste 210, Boulder, CO 803053338
Phone: 3034494496
NPI Identifier 1700951159
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Dr. Carol Hathaway-Clark , PhD

Psychologist

Active NPI Status
3393 Iris Ave Ste 104, Boulder, CO 803011956
Phone: 3034400295
NPI Identifier 1649467663
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Dr. Catherine Lee Johnston , PhD

Psychologist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4141 Arapahoe Ave, Suite 201, Boulder, CO 803031032
Phone: 3034478521
NPI Identifier 1851370886
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Dr. Susan Laurie Jones , PsyD

Psychologist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2955 Valmont Rd., Ste. 230, Boulder, CO 80301
Phone: 3034484915
NPI Identifier 1205926631
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Gail Robin Marcus , LCSW

Psychologist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1800 30th Street, Suite 217b, Boulder, CO 80301
Phone: 3036416475
NPI Identifier 1033261888
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Dr. Brennan Lynn Mars , PsyD

Psychologist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4800 Baseline Rd Ste E104 Pmb 344, Boulder, CO 803032643
Phone: 3033584603
NPI Identifier 1013030923
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Dr. Ivan Joseph Miller , PhD

Psychologist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
350 North Broadway, Suite 210, Boulder, CO 803053338
Phone: 3034993888
NPI Identifier 1558406082
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Dr. Jean Warfield Rosmarin , PhD

Psychologist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1333 Iris Ave, Boulder, CO 803042226
Phone: 3034136301
NPI Identifier 1023195641
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Dr. Celia Gilman Sinoway , PhD

Psychologist

Active NPI Status Telehealth Services Available
700 Union Ave, Boulder, CO 803040707
Phone: 3034447606
NPI Identifier 1235149683
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Dr. Heather L. Steffen , PsyD

Psychologist

Active NPI Status
4770 Baseline Rd Ste 200, Boulder, CO 803032668
Phone: 7208930842
NPI Identifier 1457539603
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Dr. Robert P Whitehouse , EdD

Psychologist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5485 Conestoga Ct, Suite 100-D, Boulder, CO 803012752
Phone: 3034170293
NPI Identifier 1437376308
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Dr. Jennifer R Abbott , PhD

Psychologist

Active NPI Status
1137 Pearl St Ste 203, Boulder, CO 803025100
Phone: 3035794618
NPI Identifier 1417281254
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Dr. Carolyn Aibel , PhD

Psychologist

Active NPI Status
3002 Bluff St, Suite 200, Boulder, CO 803012162
Phone: 7204700010
NPI Identifier 1881892495
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Dr. Monte Atkinson , PhD

Psychologist

Active NPI Status Accepts Medicare Assignment
2027 11th St., Boulder, CO 803025101
Phone: 3034442245
NPI Identifier 1063633642
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Dr. Kevin Matthew Ball-Duane , PsyD

Psychologist

Active NPI Status
3000 Center Green Dr Ste 230, Boulder, CO 803012364
Phone: 7202427533
NPI Identifier 1932034295
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Dr. Linda Sims Baran , PhD

Psychologist

Active NPI Status
3400 Table Mesa Dr, Suite 203, Boulder, CO 803055869
Phone: 3034432774
NPI Identifier 1649353707
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Dr. Evelyn J Bassoff , PhD

Psychologist

Active NPI Status
2043 Pearl St, Boulder, CO 803024429
Phone: 3034495833
NPI Identifier 1538471511
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Dr. Amy E Brooks Deweese , PhD

Psychologist

Active NPI Status
1333 Iris Ave, Boulder, CO 803042226
Phone: 3034438500
NPI Identifier 1205904430
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Holly S Brown , LICENSED PSYCHOLOGIS

Psychologist

Active NPI Status
6658 Gunpark Dr Ste 201, Boulder, CO 803013375
Phone: 7208338839
NPI Identifier 1366418311
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Dr. Andrea Clyne , PhD

Psychologist

Active NPI Status
613 Walnut St, Boulder, CO 803025031
Phone: 3038857268
NPI Identifier 1073899373
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Frequently Asked Questions about Psychologist in Boulder

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 Colorado 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.