Karen Ngoc-Diem Trinh, DDS

Offices

1 location

Plans that list them

4 plans · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Trinh’s office at (831) 724-1003 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

Sort by

Plans whose provider directory lists this clinician

Aetna Medicare Eagle (PPO)	Aetna Medicare	Listed	Sep 8, 2026
Aetna Medicare Enhanced (HMO-POS)	Aetna Medicare	Listed	Sep 8, 2026
Aetna Medicare Enhanced (PPO)	Aetna Medicare	Listed	Sep 8, 2026
Aetna Medicare Enhanced Extra (HMO-POS)	Aetna Medicare	Listed	Sep 8, 2026

Medicaid work

$65,992 in 2024

Medicaid paid $65,992 for 2,344 billed services this clinician did in 2024, up to 71 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

Sort by

Largest Medicaid services in 2024

Service	367	$29,290
Service	266	$13,634
Service	75	$6,728
Service	273	$5,587
Service	292	$4,144
Service	991	$3,859
Service	28	$1,344
Service	16	$990
Service	36	$416

Sort by

Medicaid work by year

2024	2,344	9	71	$65,992
2023	5,219	13	96	$172,036
2022	5,856	14	112	$193,608
2021	4,301	15	97	$98,478
2020	6,880	16	135	$187,042
2019	4,201	20	135	$147,757
2018	1,181	9	68	$61,593

See the largest Medicaid services in earlier years

2023

Sort by

Largest Medicaid services in 2023

Service	806	$62,664
Service	620	$32,340
Service	233	$20,970
Service	500	$10,307
Service	623	$8,869
Service	114	$8,701
Service	142	$7,508
Service	1,705	$6,538
Service	73	$4,625
Service	76	$3,552
Service	276	$3,274
Service	38	$2,419

2022

Sort by

Largest Medicaid services in 2022

Service	924	$61,488
Service	805	$41,985
Service	316	$27,915
Service	830	$12,040
Service	158	$10,208
Service	495	$10,066
Service	142	$7,145
Service	145	$6,854
Service	1,611	$6,233
Service	46	$3,542
Service	199	$2,350
Service	76	$1,830

2021

Sort by

Largest Medicaid services in 2021

Service	563	$21,049
Service	169	$14,670
Service	494	$14,618
Service	190	$11,141
Service	414	$8,589
Service	1,314	$5,129
Service	107	$5,000
Service	368	$4,304
Service	469	$3,968
Service	52	$3,427
Service	47	$2,160
Service	25	$1,750

2020

Sort by

Largest Medicaid services in 2020

Service	590	$38,118
Service	294	$26,087
Service	821	$24,300
Service	310	$20,099
Service	565	$10,993
Service	205	$9,683
Service	145	$9,427
Service	953	$8,968
Service	165	$8,894
Service	207	$8,055
Service	1,920	$7,028
Service	119	$6,091

2019

Sort by

Largest Medicaid services in 2019

Service	531	$34,886
Service	508	$18,585
Service	334	$17,619
Service	238	$15,180
Service	312	$9,270
Service	113	$9,017
Service	69	$5,850
Service	74	$5,488
Service	86	$4,880
Service	92	$4,784
Service	207	$4,008
Service	338	$3,976

2018

Sort by

Largest Medicaid services in 2018

Service	352	$22,955
Service	247	$13,206
Service	120	$9,257
Service	156	$6,840
Service	58	$3,740
Service	38	$2,903
Service	152	$1,734
Service	18	$802
Service	40	$157

Drugs they prescribed that Part D paid

$85

Pharmacies billed $85 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

Opioids were 0% of their Part D prescriptions (0 of 26) in 2024. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

25 generic and fewer than 11 brand-name prescriptions · $85 in drug cost · 24 antibiotic prescriptions to 20 people.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Sort by

Largest Part D drug costs

Amoxicillin	18	$41	$2

Year by year

Sort by

Part D prescribing by year

2024	26	21	0% (0)	None	$85
2023	45	33	0% (0)	None	$196
2022	115	74	0% (0)	None	$505
2021	80	61	None	0%	$375
2020	26	23	0% (0)	0%	$111
2019	41	30	None	0%	$215
2018	34	25	None	0%	$155
2017	48	26	0% (0)	0%	$196
2016	56	28	0% (0)	0%	$190
2015	22	13	None	None	$89

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 1 drug

Sort by

Part D drugs prescribed in 2023

Amoxicillin	28	$97	$3

2022: 2 drugs

Sort by

Part D drugs prescribed in 2022

Amoxicillin	75	$338	$5
Ibuprofen	18	$64	$4

2021: 1 drug

Sort by

Part D drugs prescribed in 2021

Amoxicillin	57	$247	$4

2020: 1 drug

Sort by

Part D drugs prescribed in 2020

Amoxicillin	20	$82	$4

2019: 1 drug

Sort by

Part D drugs prescribed in 2019

Amoxicillin	26	$130	$5

2018: 1 drug

Sort by

Part D drugs prescribed in 2018

Amoxicillin	20	$85	$4

2017: 2 drugs

Sort by

Part D drugs prescribed in 2017

Amoxicillin	31	$141	$5
Ibuprofen	13	$41	$3

2016: 2 drugs

Sort by

Part D drugs prescribed in 2016

Amoxicillin	32	$116	$4
Ibuprofen	20	$51	$3

2015: 1 drug

Sort by

Part D drugs prescribed in 2015

Amoxicillin	11	$41	$4

Money from drug and device companies

$135 in 2024

Sort by

Industry payments by year

2024	2	3	$54	$135
2019	1	1	None	$22

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Sort by

Payments by company

Align Technology	Invisalign	$81	2 payments Meals for Invisalign · 2024-11-14 · $41 Meals for Invisalign · 2024-11-14 · $41
Septodont	Bioroot Flow (Sample)	$54	1 payment Paid to speak or teach for Bioroot Flow (Sample) · 2024-05-01 · $54

See all 3 published payments

Sort by

Every published payment

Align Technology	Meals · 2024-11-14	Invisalign	$41
Align Technology	Meals · 2024-11-14	Invisalign	$41
Septodont	Paid to speak or teach · 2024-05-01	Bioroot Flow (Sample)	$54

See earlier years (2019)

2019: $22

Sort by

Payments by company in 2019

Dentsply Sirona	Promark	$22	1 payment Meals for Promark · 2019-12-04 · $22

Professional record

NPI: 1861648941
Licence: CA 47196

More record details

Sole proprietor: No
Taxonomy: Federal specialty code 122300000X (122300000X)
Mailing address: 2575 Riparian Ct, San Jose, CA, 95133
NPI first listed: 2008-08-08
NPI last updated: 2019-06-16

This is when the NPI record was last certified, not a medical board exam.

Extra NPI addresses: 2643 Senter Rd, San Jose, CA, 95111