Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Healthcare Providers & Facilities in Vacaville, CA

Public healthcare directory of 1,918 individual practitioners and 305 healthcare facilities located in Vacaville, California.

1,918 Practitioners
305 Facilities
175 Specialties

Medical Specialties in Vacaville

Select a specialty to view practitioner listings, practice locations, and qualifications.

Ask about interpreters and office accessibility

All Specialties in Vacaville

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 159 more with at least one listed practitioner. Number of practitioners in brackets.

Dietary & Nutritional Service Providers

Nursing Service Related Providers

Podiatric Medicine & Surgery Service Providers

Speech, Language and Hearing Service Providers

Featured Healthcare Providers in Vacaville

Practitioner profiles in Vacaville, CA with recent CMS Medicare or Open Payments data.

Dr. Michael Richardson , MD

Family Medicine - Geriatric Medicine

Medicare Accepted
269 Sage Sparrow Cir, Vacaville, CA
Phone: 7074514111
NPI 1831327899

Dr. Ali Hassani , MD

Internal Medicine

Medicare Accepted
421 Nut Tree Rd, Vacaville, CA
Phone: 7076247500
NPI 1487818373

Dr. Jessica Corwin , MD

Dermatology

Medicare Accepted
1 Quality Dr, Vacaville, CA
Phone: 7076243200
NPI 1154523975

Dr. Crystal Hsu , DPM

Podiatrist - Foot & Ankle Surgery

Medicare Accepted
600 Nut Tree Rd Ste 310, Vacaville, CA
Phone: 7073591816
NPI 1790034320

Dr. Shobhna Parmar , DO

Internal Medicine

Medicare Accepted
1 Quality Dr, Vacaville, CA
Phone: 7076512440
NPI 1477724797

Dr. Irene Louie , DDS

Dentist - Periodontics

671 Elmira Rd Ste 130, Vacaville, CA
Phone: 7072155259
NPI 1447746581

Largest Cities in California

Other California cities with a full directory, by the number of active practitioners listed in NPPES.

How Vacaville compares with the U.S.

Compared with the U.S. as a whole, Vacaville has more clinicians in Psychiatry & Neurology - Psychiatry (2.0x), Pharmacists (1.4x) and Dentists (1.3x) per 100,000 residents.

It has fewer Physician Assistants (32% of the U.S. rate), clinicians in Nurse Practitioner - Family (50%) and Nurse Practitioners (61%) per 100,000 residents.

Vacaville has 1,869 active clinicians per 100,000 residents, compared with 2,198 for the U.S.

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.

89% of clinicians in Vacaville listed in the CMS Medicare file (263 of 296) accept Medicare assignment. That is similar to the California share of 91%.

Only 296 of 1,918 active clinicians in Vacaville 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.

35% of clinicians in Vacaville listed in the CMS Medicare file (103 of 296) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the California share of 28%.

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).

Vacaville CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Vacaville, CA

Source: CMS public datasets

Healthcare operations in Vacaville, CA encompass 1,918 active individual practitioners and 305 registered medical facilities across 175 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Vacaville accounts for $28.5 Million across 226,377 prescription claims. 482 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.1 Million in payments reported by companies to 123 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $28.5M 226,377 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.1M 123 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 482 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $12.0M 169,688 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Vacaville

Part B Lab & Imaging Eligible: 360
Durable Medical Equipment (DME): 389
Home Health Agency (HHA): 280
Source: CMS Order and Referring