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Healthcare Providers & Facilities in Aliso Viejo, CA

Public healthcare directory of 572 individual practitioners and 211 healthcare facilities located in Aliso Viejo, California.

572 Practitioners
211 Facilities
121 Specialties

Medical Specialties in Aliso Viejo

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

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All Specialties in Aliso Viejo

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 111 more with at least one listed practitioner. Number of practitioners in brackets.

Chiropractic Providers

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Nursing Service Providers

Nursing Service Related Providers

Featured Healthcare Providers in Aliso Viejo

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

Dr. Peter Phan , MD

Nuclear Medicine

Medicare Accepted
9 Goldenrain, Aliso Viejo, CA
Phone: 9497160949
NPI 1811195563

Guneet Singh

Emergency Medicine

Medicare Accepted
22 Estero Pointe, Aliso Viejo, CA
Phone: 9493385591
NPI 1073976916

Katherine King , PA-C

Physician Assistant

Medicare Accepted
5 Journey Ste 210, Aliso Viejo, CA
Phone: 9493057122
NPI 1922332410

Dr. David Stege , DPM

Podiatrist - Foot & Ankle Surgery

15 Mareblu, Aliso Viejo, CA
Phone: 9498314000
NPI 1528023629

Dr. Maria Abello , DMD

Dentist - General Practice

6 Journey, Aliso Viejo, CA
Phone: 9494480900
NPI 1790728335

Dr. Darla Jean Capa , PT, DPT

Physical Therapist

23411 Summerfield Apt 9l, Aliso Viejo, CA
Phone: 9492320231
NPI 1881452340

Largest Cities in California

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

How Aliso Viejo compares with the U.S.

Compared with the U.S. as a whole, Aliso Viejo has more Dentists (1.7x), clinicians in Dentist - General Practice (1.4x) and clinicians in Psychiatry & Neurology - Psychiatry (1.4x) per 100,000 residents.

It has fewer clinicians in Nurse Practitioner - Family (50% of the U.S. rate), clinicians in Internal Medicine (53%) and Physician Assistants (56%) per 100,000 residents.

Aliso Viejo has 1,119 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.

85% of clinicians in Aliso Viejo listed in the CMS Medicare file (86 of 101) accept Medicare assignment. That is lower than the California share of 91%.

Only 101 of 572 active clinicians in Aliso Viejo 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.

21% of clinicians in Aliso Viejo listed in the CMS Medicare file (21 of 101) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower 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).

Aliso Viejo CMS Healthcare & Financial Disclosures

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

Source: CMS public datasets

Healthcare operations in Aliso Viejo, CA encompass 572 active individual practitioners and 211 registered medical facilities across 121 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Aliso Viejo accounts for $9.5 Million across 86,319 prescription claims. 179 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.4 Million in payments reported by companies to 93 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $9.5M 86,319 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.4M 93 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 179 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $109.1M 576,855 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Aliso Viejo

Part B Lab & Imaging Eligible: 121
Durable Medical Equipment (DME): 127
Home Health Agency (HHA): 105
Source: CMS Order and Referring