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Clinics, medical groups, and serving areas

Start from a city. This directory relates named medical groups and clinic locations to the Los Angeles County city guides they serve. It is not a provider directory and not a network list.

A hospital, doctor, medical group, or pharmacy being nearby does not mean it participates in a particular Medicare Advantage network. Original Medicare acceptance is not the same as being in a given plan’s network. Confirm the exact location, physician, medical group, and plan with the office and on Medicare.gov.

Last reviewed September 21, 2026. Serving areas are geographic footprints — not Medicare Advantage service areas and not a network.

Cerritos

Serving area: Long Beach and Gateway cities. 4 medical groups and 0 clinic locations related to this city guide.

Open the Cerritos Medicare guide

Medical groups and IPAs (4)

Medical group

Optum

A large regional medical group. Some offices still show a HealthCare Partners history. Affiliation on a sign is not the same as an exact Medicare Advantage contract. Confirm the physician, location, and plan.

Serving area: Central and West Los Angeles; Glendale and Burbank; San Gabriel Valley; East San Gabriel Valley and Pomona; South Bay; Long Beach and Gateway cities

Related city guides: Los Angeles, Santa Monica, Beverly Hills, West Hollywood, Culver City, Glendale, Burbank, Arcadia, Pasadena, Monrovia and Duarte, San Gabriel, Alhambra, Monterey Park, El Monte, Rosemead, Temple City, Sierra Madre, Pomona, Claremont, Glendora, Covina, West Covina, Azusa, La Verne, Inglewood, Hawthorne, Torrance, Redondo Beach, Gardena, Carson, Long Beach, Compton, Downey, Whittier, Pico Rivera, Norwalk, Lakewood, Bellflower, La Mirada, South Gate

Official site

Integrated system

Kaiser Permanente

An integrated system: the medical group, hospitals, and plan generally stay inside Kaiser. That is a different structure from assembling an independent PCP, IPA, and hospital. Neither model is automatically better.

Serving area: Central and West Los Angeles; South Bay; Long Beach and Gateway cities; East San Gabriel Valley and Pomona; Santa Clarita Valley

Related city guides: Los Angeles, Santa Monica, Beverly Hills, West Hollywood, Culver City, Inglewood, Hawthorne, Torrance, Redondo Beach, Gardena, Carson, Long Beach, Compton, Downey, Whittier, Pico Rivera, Norwalk, Lakewood, Bellflower, La Mirada, South Gate, Pomona, Claremont, Glendora, Covina, West Covina, Azusa, La Verne, Santa Clarita, Calabasas

Official site

Clinic locations (0)

No clinic locations match this filter.

A hospital, doctor, medical group, or pharmacy being nearby does not mean it participates in a particular Medicare Advantage network. Original Medicare acceptance is not the same as being in a given plan’s network. Confirm the exact location, physician, medical group, and plan with the office and on Medicare.gov.

Los Angeles County city guides

45 local decision guides. Each city starts with a different healthcare-access issue. We do not claim that a nearby hospital or doctor is in any Medicare Advantage network.

Central and West Los Angeles

Health-system geography across neighborhoods—not one citywide network.

Glendale and Burbank

Two-hospital towns and specialist travel into Los Angeles and Pasadena.

San Gabriel Valley

Arcadia home market plus nine nearby decision guides.

East San Gabriel Valley and Pomona

Emanate Health, Pomona Valley, Casa Colina, and City of Hope geography.

South Bay

Torrance systems, coastal travel, and cities without an in-town hospital.

Long Beach and Gateway cities

MemorialCare, PIH, Kaiser, VA, and dual-eligibility questions.

North County

Santa Clarita, Antelope Valley, and West Valley distance and travel.

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