Alignment Health the ONE (HMO) · 2026

Plan type: HMO
Providers listed: 10,181

Providers listed by this plan

Information as of Oct 3, 2026. Directories change; call the doctor’s office to confirm before you choose. A missing listing does not mean out of network.

10,181 listings. Repeated names and offices are kept as printed. 5,467 are linked to a clinician’s profile. A listing does not guarantee appointments or coverage for a particular service.

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About these listings

These are original name and office occurrences in the carrier's plan-specific directory, not a count of unique clinicians. Names have not been linked to NPI identities. County sections are the carrier's groupings and do not establish physical county boundaries. Check medical-group, referral and office requirements with the plan. A listing does not establish current appointments, coverage for a service, or access through every medical group. A missing listing does not mean out of network.


Deboer, Charles Meno, MD	Specialist	751 S Bascom Ave, San Jose, CA 95128SANTA CLARA area	1134649973	1 office entry and medical groups 751 S Bascom Ave, San Jose, CA 95128(888) 334-1000Medical group: North East Medical Services Call this office to confirm it takes the plan, and which medical group it is in.
De Bruin, Monique, MD	Specialist	301 Old San Francisco Rd, Sunnyvale, CA 94086SANTA CLARA area	1457532731	1 office entry and medical groups 301 Old San Francisco Rd, Sunnyvale, CA 94086(408) 730-2800Medical group: Brown & Toland Physicians Call this office to confirm it takes the plan, and which medical group it is in.
De Bruin, Monique, MD	Specialist	2581 Samaritan Dr STE 200, San Jose, CA 95124SANTA CLARA area	1457532731	1 office entry and medical groups 2581 Samaritan Dr STE 200, San Jose, CA 95124(408) 523-3000Medical group: Brown & Toland Physicians Call this office to confirm it takes the plan, and which medical group it is in.
Debski, Lauren Sarah, NP	Mental / behavioral health	99 Almaden Blvd STE 600, San Jose, CA 95113SANTA CLARA area	None	1 office entry and medical groups 99 Almaden Blvd STE 600, San Jose, CA 95113(786) 244-3620Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000065036 Call this office to confirm it takes the plan, and which medical group it is in.
Debs, Sarah, MD	Specialist	2577 Samaritan Dr STE 765, San Jose, CA 95124SANTA CLARA area	1891377537	2 office entries and medical groups 2577 Samaritan Dr STE 765, San Jose, CA 95124(408) 227-6300Medical group: Alignment Health Plan Network 6060 Hellyer Ave 150, San Jose, CA 95138(408) 227-6300Medical group: Alignment Health Plan Network Call this office to confirm it takes the plan, and which medical group it is in.
De Casas, Claudia, LCSW	Mental / behavioral health	5201 Great America Pkwy STE 320, Santa Clara, CA 95054SANTA CLARA area	None	1 office entry and medical groups 5201 Great America Pkwy STE 320, Santa Clara, CA 95054(323) 690-1870Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000065773 Call this office to confirm it takes the plan, and which medical group it is in.
De Casas, Claudia, LCSW	Mental / behavioral health	15559 Union Ave, Los Gatos, CA 95032SANTA CLARA area	None	1 office entry and medical groups 15559 Union Ave, Los Gatos, CA 95032(323) 690-1870Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000065773 Call this office to confirm it takes the plan, and which medical group it is in.
Decker, Jessica Louise, LCSW	Mental / behavioral health	307 Orchard City Dr Ste 310, Campbell, CA 95008SANTA CLARA area	None	1 office entry and medical groups 307 Orchard City Dr Ste 310, Campbell, CA 95008(646) 941-7645Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000447733 Call this office to confirm it takes the plan, and which medical group it is in.
Decker, Joseph, MD	Specialist	123 Di Salvo Ave STE 20, San Jose, CA 95128SANTA CLARA area	1871546010	2 office entries and medical groups 123 Di Salvo Ave STE 20, San Jose, CA 95128(408) 279-4664Medical group: Alignment Health Plan Network 123 Di Salvo Ave STE 20, San Jose, CA 95128(408) 279-4664Medical group: Santa Clara County IPA Call this office to confirm it takes the plan, and which medical group it is in.
Decker, Marlene None, MFT	Mental / behavioral health	2039 Forest Ave, San Jose, CA 95128SANTA CLARA area	1881802478	1 office entry and medical groups 2039 Forest Ave, San Jose, CA 95128(408) 486-9357Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000064523 Call this office to confirm it takes the plan, and which medical group it is in.
Decker, Tonette Kay, LCSW	Mental / behavioral health	485 South Dr, Mountain View, CA 94040SANTA CLARA area	None	1 office entry and medical groups 485 South Dr, Mountain View, CA 94040(323) 690-1870Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000070003 Call this office to confirm it takes the plan, and which medical group it is in.
Decker, Tonette Kay, LCSW	Mental / behavioral health	5201 Great America Pkwy STE 320, Santa Clara, CA 95054SANTA CLARA area	None	1 office entry and medical groups 5201 Great America Pkwy STE 320, Santa Clara, CA 95054(323) 690-1870Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000070003 Call this office to confirm it takes the plan, and which medical group it is in.
Deconinck, Ellen, MD	Specialist	401 Old San Francisco Rd, Sunnyvale, CA 94086SANTA CLARA area	1114977865	1 office entry and medical groups 401 Old San Francisco Rd, Sunnyvale, CA 94086(650) 934-7676Medical group: Brown & Toland Physicians Call this office to confirm it takes the plan, and which medical group it is in.
Dee, Martin Christopher, LCSW	Mental / behavioral health	6203 San Ignacio Ave STE 110, San Jose, CA 95119SANTA CLARA area	None	1 office entry and medical groups 6203 San Ignacio Ave STE 110, San Jose, CA 95119(866) 945-8131Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000446194 Call this office to confirm it takes the plan, and which medical group it is in.
Defigard, Mary Donaldson, MD	Primary care	555 Knowles Dr, Los Gatos, CA 95032SANTA CLARA area	1710914791	1 office entry and medical groups 555 Knowles Dr, Los Gatos, CA 95032(408) 377-9180Medical group: Optum Care Network-Greater Bay Area · Carrier ID: 300000248375 Call this office to confirm it takes the plan, and which medical group it is in.
Degaetano, Noah Paul, MD	Mental / behavioral health	877 W Fremont Ave STE N3, Sunnyvale, CA 94087SANTA CLARA area	1326247644	1 office entry and medical groups 877 W Fremont Ave STE N3, Sunnyvale, CA 94087(650) 993-9996Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000081047 Call this office to confirm it takes the plan, and which medical group it is in.
Deger, Paul Thomas, LCSW	Mental / behavioral health	6203 San Ignacio Ave STE 110, San Jose, CA 95119SANTA CLARA area	None	1 office entry and medical groups 6203 San Ignacio Ave STE 110, San Jose, CA 95119(866) 945-8131Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000447122 Call this office to confirm it takes the plan, and which medical group it is in.
Degraff, Lisa Ann, NP	Mental / behavioral health	2001 Addison St, Berkeley, CA 94704ALAMEDA area	1588399737	1 office entry and medical groups 2001 Addison St, Berkeley, CA 94704(888) 684-2779Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000067204 Call this office to confirm it takes the plan, and which medical group it is in.
Degraff, Lisa Ann, NP	Mental / behavioral health	640 W California Ave STE 210, Sunnyvale, CA 94086SANTA CLARA area	1588399737	1 office entry and medical groups 640 W California Ave STE 210, Sunnyvale, CA 94086(888) 684-2779Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000067204 Call this office to confirm it takes the plan, and which medical group it is in.
Degraff, Lisa Ann, NP	Mental / behavioral health	900 E Hamilton Ave STE 100, Campbell, CA 95008SANTA CLARA area	1588399737	1 office entry and medical groups 900 E Hamilton Ave STE 100, Campbell, CA 95008(888) 684-2779Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000067204 Call this office to confirm it takes the plan, and which medical group it is in.
Degraff, Lisa Ann, NP	Mental / behavioral health	5201 Great America Pkwy STE 320, Santa Clara, CA 95054SANTA CLARA area	1588399737	1 office entry and medical groups 5201 Great America Pkwy STE 320, Santa Clara, CA 95054(888) 684-2779Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000067204 Call this office to confirm it takes the plan, and which medical group it is in.
Degraff, Lisa Ann, NP	Mental / behavioral health	530 Lytton Ave FL 2, Palo Alto, CA 94301SANTA CLARA area	1588399737	1 office entry and medical groups 530 Lytton Ave FL 2, Palo Alto, CA 94301(888) 684-2779Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000067204 Call this office to confirm it takes the plan, and which medical group it is in.
Deja, Elizabeth, LCSW	Mental / behavioral health	6203 San Ignacio Ave STE 110, San Jose, CA 95119SANTA CLARA area	1255615605	1 office entry and medical groups 6203 San Ignacio Ave STE 110, San Jose, CA 95119(866) 945-8131Medical group: Optum Behavioral Health Solutions · Carrier ID: 300000445129 Call this office to confirm it takes the plan, and which medical group it is in.
Dejanovic, Ilja, MD	Specialist	15075 Los Gatos Blvd STE 150, Los Gatos, CA 95032SANTA CLARA area	1841796778	1 office entry and medical groups 15075 Los Gatos Blvd STE 150, Los Gatos, CA 95032(650) 695-0955Medical group: Alignment Health Plan Network Call this office to confirm it takes the plan, and which medical group it is in.
Dejanovic, Ilja, MD	Specialist	2409 Hospital Dr, Mountain View, CA 94040SANTA CLARA area	1841796778	4 office entries and medical groups 2409 Hospital Dr, Mountain View, CA 94040(650) 695-0955Medical group: Optum Care Network-Greater Bay Area 1174 Castro St Ste 200, Mountain View, CA 94040(650) 695-0955Medical group: Optum Care Network-Greater Bay Area 2490 Hospital Dr STE 106, Mountain View, CA 94040(650) 695-0955Medical group: Alignment Health Plan Network 1174 Castro St STE 200, Mountain View, CA 94040(650) 695-0955Medical group: Alignment Health Plan Network Call this office to confirm it takes the plan, and which medical group it is in.