Psychologists in Vacaville, CA
Browse 23 Psychologist providers listed in NPPES with a practice address in Vacaville, California.
How Vacaville compares with the U.S.
Vacaville has 22 Psychologists per 100,000 residents, about 1.6 times the U.S. rate of 14.
That is 23 active Psychologists with a practice address in Vacaville, for a population of 102,596.
The California rate is 19 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 Psychologists in Vacaville 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 Registry addresses can be out of date.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 · 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).
Dr. Peter M. Bradlee , PhD
Psychologist
Dr. Katheryn Conde , PsyD
Psychologist
Dr. Andrea Michelle Graves , PsyD
Psychologist
Michael Jay Ryan , MS
Psychologist
Dr. Karen Kathleen Alexander , PhD
Psychologist
Dr. Alison Gastorf Aylward , PhD
Psychologist
Dr. Dorann Lee Boulian , PhD
Psychologist
Dr. Amanda Davis , PsyD
Psychologist
Dr. Elias De Almeida , PhD
Psychologist
Dr. Samia M Estrada , PsyD
Psychologist
Dr. Brenda Frechette , PhD
Psychologist
Dr. Kimberly Gill-Keating , PsyD
Psychologist
Dr. Anjalee Greenwood , PsyD, BCBA
Psychologist
Dr. Amber Haydu , PsyD
Psychologist
Dr. Judith Mudge Herman , PhD
Psychologist
Dr. Roy W. Johnson , PhD
Psychologist
Dr. Roserin Jothaprasert , PsyD
Psychologist
Dr. Shirley Ann Kramer-Webb , PhD
Psychologist
Dr. Jessica Lester , PsyD
Psychologist
Ahna Marie Montague
Psychologist
Frequently Asked Questions about Psychologist in Vacaville
Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.
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.
Other Specialties in Vacaville
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