Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Healthcare Providers & Facilities in Altadena, CA

Public healthcare directory of 517 individual practitioners and 100 healthcare facilities located in Altadena, California.

517 Practitioners
100 Facilities
74 Specialties

Medical Specialties in Altadena

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

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All Specialties in Altadena

74 specialties with at least one listed practitioner; none has a comparison directory yet. Number of practitioners in brackets.

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Nursing Service Related Providers

Pharmacy Service Providers

Respiratory, Developmental, Rehabilitative and Restorative Service Providers

Featured Healthcare Providers in Altadena

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

Dr. Cristina Sanchez , MD

Anesthesiology

Medicare Accepted
3058 Olive Ave, Altadena, CA
Phone: 6267980306
NPI 1417141086

Dr. Gloria Ko , PharmD

Pharmacist

2450 Lake Ave, Altadena, CA
Phone: 6267971163
NPI 1386174282

Dr. David Campbell , DDS

Dentist - General Practice

1955 Lake Ave, Altadena, CA
Phone: 6265859544
NPI 1992703763

Johanna Solorzano , APRN FNP

Nurse Practitioner - Family

143 Laurel Dr, Altadena, CA
Phone: 4156536272
NPI 1275130759

Dr. David Rhodes , MD

Urology

2124 Midlothian Dr, Altadena, CA
Phone: 6267987042
NPI 1457467094

Dr. Craig Cheng , DDS

Dentist

2028 Lake Ave, Altadena, CA
Phone: 6267977551
NPI 1376839753

Largest Cities in California

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

How Altadena compares with the U.S.

Altadena has 1,240 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.

80% of clinicians in Altadena listed in the CMS Medicare file (12 of 15) accept Medicare assignment. That is lower than the California share of 91%.

Only 15 of 517 active clinicians in Altadena 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.

7% of clinicians in Altadena listed in the CMS Medicare file (1 of 15) 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).

Altadena CMS Healthcare & Financial Disclosures

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

Source: CMS public datasets

Healthcare operations in Altadena, CA encompass 517 active individual practitioners and 100 registered medical facilities across 74 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Altadena accounts for $0.2 Million across 3,567 prescription claims. 39 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.0 Million in payments reported by companies; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $0.2M 3,567 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.0M A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 39 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $2.1M 45,373 Services Performed Source: data.cms.gov

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

Part B Lab & Imaging Eligible: 30
Durable Medical Equipment (DME): 33
Home Health Agency (HHA): 12
Source: CMS Order and Referring