4900 Merrick Rd,
2Nd Fl
Massapequa Park, NY 11762
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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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2.43 mi away
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
3.91 mi away
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
4.04 mi away
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 - Bethpage
4276 Hempstead Tpke,
Bethpage, NY 11714
Get Directions4.34 mi away
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
7.35 mi away
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
9.39 mi away
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 - Syosset
269 Jericho Tpke,
Syosset, NY 11791
Get Directions9.86 mi away
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
10.38 mi away
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
11.32 mi away
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
11.85 mi away
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
12.41 mi away
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 - Mineola
212 Station Plz N,
Mineola, NY 11501
Get Directions12.54 mi away
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
12.93 mi away
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
13.49 mi away
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
13.65 mi away
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
Get Directions14.66 mi away
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
15.33 mi away
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 - Floral Park
265 Jericho Tpke,
Floral Park, NY 11001
Get Directions15.4 mi away
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:
6:00 am-12:00 pm
Sunday:
Closed
16.99 mi away
Monday:
7:30 am-12:00 pm , 1:00 pm-3:00 pm
Tuesday:
7:30 am-12:00 pm , 1:00 pm-3:00 pm
Wednesday:
7:30 am-12:00 pm , 1:00 pm-3:00 pm
Thursday:
7:30 am-12:00 pm , 1:00 pm-3:00 pm
Friday:
7:30 am-12:00 pm , 1:00 pm-3:00 pm
Saturday:
Closed
Sunday:
Closed
17.01 mi away
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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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.