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Quest Diagnostics

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Lab testing, laboratory and office locations around the world

Quest Diagnostics has headquarters in the U.S. and operations in India, Ireland, and Mexico. Our products and services are used by customers in over 130 countries. We also collaborate with many international diagnostic laboratories, hospitals and clinics to help improve human health around the world.

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Quest Diagnostics - Bethpage

4276 Hempstead Tpke,

Bethpage, NY 11714

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2.72 mi away

Schedule Appointment 516-677-7701
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: 6:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Seaford

850 Hicksville Rd,

Ste 114

Seaford, NY 11783

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3.43 mi away

Schedule Appointment 516-677-7716
Monday: 6:00 am-2:30 pm
Tuesday: 6:00 am-2:30 pm
Wednesday: 6:00 am-2:30 pm
Thursday: 6:00 am-2:30 pm
Friday: 6:00 am-2:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Plainview

146A Manetto Hill Rd,

Ste101

Plainview, NY 11803

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4.12 mi away

Schedule Appointment 516-677-7713
Monday: 6:00 am-3:00 pm
Tuesday: 6:00 am-3:00 pm
Wednesday: 6:00 am-3:00 pm
Thursday: 6:00 am-3:00 pm
Friday: 6:00 am-3:00 pm
Saturday: 6:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Massapequa Park

4900 Merrick Rd,

2Nd Fl

Massapequa Park, NY 11762

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4.86 mi away

Schedule Appointment 516-677-7736
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: 6:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Babylon

500 W Main St,

Suite 202-203

Babylon, NY 11702

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5.7 mi away

Schedule Appointment 516-677-7718
Monday: 6:30 am-3:00 pm
Tuesday: 6:30 am-3:00 pm
Wednesday: 6:30 am-3:00 pm
Thursday: 6:30 am-3:00 pm
Friday: 6:30 am-3:00 pm
Saturday: 6:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Syosset

269 Jericho Tpke,

Syosset, NY 11791

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6.71 mi away

Schedule Appointment 516-677-5355
Monday: 6:00 am-4:00 pm
Tuesday: 6:00 am-4:00 pm
Wednesday: 6:00 am-4:00 pm
Thursday: 6:00 am-4:00 pm
Friday: 6:00 am-4:00 pm
Saturday: 6:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Freeport

101 S Bergen Pl,

2Nd Fl

Freeport, NY 11520

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10.04 mi away

Schedule Appointment 516-677-7705
Monday: 7:00 am-3:00 pm
Tuesday: 7:00 am-3:00 pm
Wednesday: 7:00 am-3:00 pm
Thursday: 7:00 am-3:00 pm
Friday: 7:00 am-3:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Huntington

175 E Main St,

Ste 105

Huntington, NY 11743

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10.29 mi away

Schedule Appointment 631-421-2682
Monday: 7:00 am-3:30 pm
Tuesday: 7:00 am-3:30 pm
Wednesday: 7:00 am-3:30 pm
Thursday: 7:00 am-3:30 pm
Friday: 7:00 am-3:30 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Bay Shore

8 Saxon Ave,

Ste D

Bay Shore, NY 11706

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10.67 mi away

Schedule Appointment 516-677-7719
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: 6:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Commack

2171 Jericho Tpke,

Ste 102

Commack, NY 11725

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10.8 mi away

Schedule Appointment 516-677-7721
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Garden City

520 Franklin Ave,

Ste 104

Garden City, NY 11530

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10.87 mi away

Schedule Appointment 516-677-7706
Monday: 6:30 am-3:00 pm
Tuesday: 6:30 am-3:00 pm
Wednesday: 6:30 am-3:00 pm
Thursday: 6:30 am-3:00 pm
Friday: 6:30 am-3:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Rockville Centre 2

2000 N Village Ave,

1St Fl Suite 101

Rockville Ctr, NY 11570

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11.06 mi away

Schedule Appointment 347-342-9447
Monday: 7:00 am-3:00 pm
Tuesday: 7:00 am-3:00 pm
Wednesday: 7:00 am-3:00 pm
Thursday: 7:00 am-3:00 pm
Friday: 7:00 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Mineola

212 Station Plz N,

Mineola, NY 11501

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11.23 mi away

Schedule Appointment 516-677-7712
Monday: 7:00 am-3:00 pm
Tuesday: 7:00 am-3:00 pm
Wednesday: 7:00 am-3:00 pm
Thursday: 7:00 am-3:00 pm
Friday: 7:00 am-3:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Hauppauge

490 Wheeler Rd,

Ste 190

Hauppauge, NY 11788

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12.43 mi away

Schedule Appointment 516-677-7724
Monday: 6:00 am-1:00 pm
Tuesday: 6:00 am-1:00 pm
Wednesday: 6:00 am-1:00 pm
Thursday: 6:00 am-1:00 pm
Friday: 6:00 am-1:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Roslyn

1502 Old Northern Blvd,

Roslyn, NY 11576

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12.46 mi away

Schedule Appointment 516-361-1107
Monday: 7:00 am-3:00 pm
Tuesday: 7:00 am-3:00 pm
Wednesday: 7:00 am-3:00 pm
Thursday: 7:00 am-3:00 pm
Friday: 7:00 am-3:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Rockville Centre

165 N Village Ave,

Ste 103

Rockville Centre, NY 11570

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12.57 mi away

Schedule Appointment 516-677-7715
Monday: 6:30 am-3:00 pm
Tuesday: 6:30 am-3:00 pm
Wednesday: 6:30 am-3:00 pm
Thursday: 6:30 am-3:00 pm
Friday: 6:30 am-3:00 pm
Saturday: 6:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Lake Success

2001 Marcus Ave,

Ste W98 Lobby Level

New Hyde Park, NY 11042

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13.91 mi away

Schedule Appointment 516-677-7710
Monday: 7:00 am-3:30 pm
Tuesday: 7:00 am-3:30 pm
Wednesday: 7:00 am-3:30 pm
Thursday: 7:00 am-3:30 pm
Friday: 7:00 am-3:30 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Prado Norte Lomas de Chapultepec

Av Prado Norte 530,

Lomas De Chapultepec

Mexico City, Mexico, 11000

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14.11 mi away

55-416-0777
Monday: 6:00 am-3:00 pm
Tuesday: 6:00 am-3:00 pm
Wednesday: 6:00 am-3:00 pm
Thursday: 6:00 am-3:00 pm
Friday: 6:00 am-3:00 pm
Saturday: 7:00 am-1:30 pm
Sunday: Closed

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Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.