David T Constant, DDS

Offices

1 location

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Constant’s office at (408) 996-2909 to ask if they take your plan before you enroll.

California Medical Board record

Licence C34600 · Cancelled

Licence status: Cancelled · since 1972 · University of Iowa College of Medicine.

License has been voluntarily canceled, or the license has been expired for at least five years and has not been renewed. No practice is permitted.

Matched on the licence number without its letter prefix; check the name before relying on it.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Money from drug and device companies

$757 in 2025

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Industry payments by year

2025	2	13	$60	$757
2024	3	17	$115	$1,217
2023	1	16	$15	$604
2022	1	7	$35	$383
2021	2	2	None	$42
2020	1	1	None	$42
2019	3	37	None	$956

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

A payment is not proof that care is biased.

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Payments by company

Align Technology	Invisalign	$738	11 payments Meals for Invisalign · 2025-12-18 · $120 Meals for Invisalign · 2025-11-21 · $74 Consulting for Vivera · 2025-11-14 · $15 Consulting for Vivera · 2025-11-13 · $15 Education for Invisalign · 2025-09-26 · $25 Meals for Invisalign · 2025-09-25 · $18 Consulting for Invisalign · 2025-06-27 · $30 Meals for Invisalign · 2025-06-24 · $19 Meals for Invisalign · 2025-03-17 · $19 Meals for Invisalign · 2025-02-21 · $202 Meals for Invisalign · 2025-02-21 · $202
American Orthodontics	Empower-Metal	$19	2 payments Meals for Empower-Metal · 2025-10-30 · $6 Meals for Empower-Metal · 2025-06-12 · $13

See all 13 published payments

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Every published payment

Align Technology	Meals · 2025-12-18	Invisalign	$120
Align Technology	Meals · 2025-11-21	Invisalign	$74
Align Technology	Consulting · 2025-11-14	Vivera	$15
Align Technology	Consulting · 2025-11-13	Vivera	$15
American Orthodontics	Meals · 2025-10-30	Empower-Metal	$6
Align Technology	Education · 2025-09-26	Invisalign	$25
Align Technology	Meals · 2025-09-25	Invisalign	$18
Align Technology	Consulting · 2025-06-27	Invisalign	$30
Align Technology	Meals · 2025-06-24	Invisalign	$19
American Orthodontics	Meals · 2025-06-12	Empower-Metal	$13
Align Technology	Meals · 2025-03-17	Invisalign	$19
Align Technology	Meals · 2025-02-21	Invisalign	$202
Align Technology	Meals · 2025-02-21	Invisalign	$202

See earlier years (2024, 2023, 2022, 2021, 2020, 2019)

2024: $1,217

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Payments by company in 2024

Align Technology	Invisalign	$1,158	15 payments Meals for Invisalign · 2024-12-19 · $137 Consulting for Invisalign · 2024-12-19 · $25 Gift for Invisalign · 2024-11-03 · $268 Meals for Invisalign · 2024-11-01 · $165 Meals for Invisalign · 2024-11-01 · $165 Meals for Invisalign · 2024-11-01 · $184 Meals for Invisalign · 2024-10-22 · $33 Meals for Invisalign · 2024-10-21 · $19 Meals for Invisalign · 2024-09-16 · $18 Meals for Invisalign · 2024-09-16 · $22 Meals for Invisalign · 2024-08-29 · $33 Consulting for Invisalign · 2024-08-27 · $15 Consulting for Invisalign · 2024-07-12 · $35 Consulting for Invisalign · 2024-03-29 · $20 Consulting for Invisalign · 2024-03-20 · $20
American Orthodontics	Empower-Metal	$39	1 payment Meals for Empower-Metal · 2024-03-19 · $39
PureLife	None	$20	1 payment Gift · 2024-05-18 · $20

2023: $604

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Payments by company in 2023

Align Technology	Invisalign First - Comprehensive	$604	16 payments Meals for Invisalign First - Comprehensive · 2023-11-30 · $11 Meals for Invisalign First - Comprehensive · 2023-11-23 · $70 Meals for Itero Element 5d Plus Lite · 2023-11-21 · $37 Meals for Touch Up · 2023-11-07 · $68 Meals for Invisalign First - Comprehensive · 2023-09-16 · $123 Meals for Invisalign · 2023-09-16 · $38 Meals for Itero Element · 2023-09-16 · $19 Meals for Invisalign First - Comprehensive · 2023-09-16 · $11 Meals for Invisalign First - Comprehensive · 2023-09-16 · $11 Meals for Invisalign Touch Up · 2023-09-16 · $7 Meals for Itero Element 5d Plus Lite · 2023-09-16 · $3 Meals for Itero Element 5d Plus Lite · 2023-09-16 · $3 Meals for Invisalign · 2023-09-15 · $159 Consulting for Invisalign · 2023-06-29 · $15 Meals for Vivera Retainers · 2023-02-14 · $24 Meals for Vivera Retainers · 2023-02-14 · $7

2022: $383

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Payments by company in 2022

Align Technology	Invisalign	$383	7 payments Meals for Invisalign · 2022-12-13 · $22 Meals for Invisalign · 2022-12-01 · $210 Meals for Invisalign · 2022-08-26 · $20 Meals for Invisalign · 2022-08-26 · $20 Consulting for Invisalign · 2022-03-26 · $10 Meals for Invisalign · 2022-02-07 · $75 Consulting for Invisalign · 2022-01-10 · $25

2021: $42

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Payments by company in 2021

American Orthodontics	Empower-Metal	$27	1 payment Meals for Empower-Metal · 2021-03-08 · $27
Align Technology	Invisalign	$15	1 payment Gift for Invisalign · 2021-11-18 · $15

2020: $42

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Payments by company in 2020

Align Technology	Invisalign	$42	1 payment Meals for Invisalign · 2020-09-21 · $42

2019: $956

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Payments by company in 2019

American Orthodontics	Empower-Metal	$654	6 payments Entertainment for Empower-Metal · 2019-11-04 · $96 Entertainment for Empower-Metal · 2019-10-28 · $234 Entertainment for Empower-Metal · 2019-09-04 · $26 Entertainment for Empower-Metal · 2019-05-06 · $62 Gift for Empower-Metal · 2019-04-23 · $92 Meals for Empower-Metal · 2019-01-14 · $145
Align Technology	Invisalign	$289	5 payments Meals for Invisalign · 2019-02-14 · $85 Meals for Invisalign · 2019-02-14 · $78 Meals for Invisalign · 2019-02-14 · $21 Meals for Invisalign · 2019-02-14 · $22 Meals for Invisalign · 2019-02-14 · $83
Dentsply Sirona	Essix	$13	1 payment Meals for Essix · 2019-06-19 · $13

Research money

Money a company paid to run a study. Where it went to their institution, the clinician is named as an investigator and did not receive it; the amount covers the whole study, often across many sites.

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Research payments by company and study

Align Technology, Inc. · Angie Performance Qualification Study for Invisalign · 2023	This clinician	$30,555
Align Technology, Inc. · New Aligner Material Feasibility Study · 2024	This clinician	$24,319
Align Technology, Inc. · Clinical Study of Optimized Treatment With Clear Aligners · 2024	This clinician	$6,720
Align Technology, Inc. · Angie Intraoral Scan Data Collection · 2023	This clinician	$6,045
Align Technology, Inc. · Angie Restorative Data Collection Study · 2024	This clinician	$4,868
Align Technology, Inc. · Angie Performance Qualification Study for Invisalign · 2022	This clinician	$660

Professional record

NPI: 1528506151
Licence: CA 34600California C34600: Cancelled

More record details

Sole proprietor: No
Taxonomy: Federal specialty code 1223X0400X (1223X0400X)
Mailing address: 10393 Torre Ave Ste K, Cupertino, CA, 95014
NPI first listed: 2017-02-02
NPI last updated: 2017-02-02

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