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Important Alerts
Updates

Starting Wednesday, September 3, the Town of Fishkill will be closing and paving the portion of Merritt Blvd that connects to Route 9.

Important Detour Information:

  • This road closure will require patients to take a detour that may add at least 20 minutes to travel time.
  • The detour route passes through school zones, and local schools will be in session starting next week. Please plan accordingly and drive safely.

As of September 15, 2025, Plainview Cardiology, Gastroenterology, Primary Care at 1181 Old Country Rd and Primary Care at 789 Old Country Rd have relocated to a new, state-of-the-art multi-specialty center at 1600 Old Country Road in Plainview.

Recording/Photography Not Permitted on Premises

Office and Urgent Care Closures

The Croton-on-Hudson lab is temporarily closed until further notice.

COVID-19 Information and Updates

Flu and COVID-19 vaccines are now available ›

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Home ❯ Services and specialties ❯ Optum lab services hours

Nassau County

Bethpage
  • Monday: 7:30 a.m.-4 p.m.
  • Tuesday: 7:30 a.m.-4 p.m.
  • Wednesday: 7:30 a.m.-4 p.m.
  • Thursday: 7:30 a.m.-4 p.m.
  • Friday: 7:30 a.m.-4 p.m.
  • Saturday: 7:30 a.m.-12 p.m.
  • Sunday: Closed
Lake Success, 1 Dakota Drive
  • Monday: 7:30 a.m.–6 p.m.
  • Tuesday: 7:30 a.m.–6 p.m.
  • Wednesday: 7:30 a.m.–6 p.m.
  • Thursday: 7:30 a.m.–6 p.m.
  • Friday: 7:30 a.m.–6 p.m.
  • Saturday: Closed
  • Sunday: Closed
Lake Success, 2 Ohio Drive
  • Monday: 8 a.m.–4 p.m.
  • Tuesday: 8 a.m.–4 p.m.
  • Wednesday: 8 a.m.–4 p.m.
  • Thursday: 8 a.m.–4 p.m.
  • Friday: 8 a.m.–4 p.m.
  • Saturday: Closed
  • Sunday: Closed
Syosset
  • Monday: 7:30 a.m.-3:30 p.m.
  • Tuesday: 7:30 a.m.-3:30 p.m.
  • Wednesday: 7:30 a.m.-3:30 p.m.
  • Thursday: 7:30 a.m.-3:30 p.m.
  • Friday: 7:30 a.m.-3:30 p.m.
  • Saturday: Closed
  • Sunday: Closed

Putnam County Offices

Carmel (Brewster) – NY-312
  • Monday: 8 a.m.–5:30 p.m.
  • Tuesday: 8 a.m.–5:30 p.m.
  • Wednesday: 8 a.m.–5:30 p.m.
  • Thursday: 8 a.m.–5:30 p.m.
  • Friday: 8 a.m.–5:30 p.m.
  • Saturday: 8 a.m.–12:30 p.m.
  • Sunday: Closed

EKG Available

Carmel – Stoneleigh Ave
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: Closed
  • Sunday: Closed

EKG Available

Dutchess County Offices

Fishkill – Merritt Blvd 
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: Closed
  • Sunday: Closed

EKG Available

Fishkill – Westage Business Center Dr
  • Monday: 7 a.m.–4:30 p.m.
  • Tuesday: 7 a.m.–4:30 p.m.
  • Wednesday: 7 a.m.–4:30 p.m.
  • Thursday: 7 a.m.–4:30 p.m.
  • Friday: 7 a.m.–4:30 p.m.
  • Saturday: 8-11:30 a.m.
  • Sunday: Closed

EKG Available

Hopewell Junction
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: Closed
  • Sunday: Closed

EKG Available

Poughkeepsie – Columbia St
  • Monday: 7 a.m.–4:30 p.m.
  • Tuesday: 7 a.m.–4:30 p.m.
  • Wednesday: 7 a.m.–4:30 p.m.
  • Thursday: 7 a.m.–4:30 p.m.
  • Friday: 7 a.m.–4:30 p.m.
  • Saturday: 8 a.m.-11:45 a.m.
  • Sunday: Closed
Poughkeepsie – 2507 South Road (Oakwood Commons)
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: Closed
  • Sunday: Closed

EKG Available

Poughkeepsie – 2515 South Rd (OB/GYN)
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: Closed
  • Sunday: Closed
Rhinebeck
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: Closed
  • Sunday: Closed

Suffolk County

Port Jefferson
  • Monday: 7 a.m.-3 p.m.
  • Tuesday: 7 a.m.-3 p.m.
  • Wednesday: 7 a.m.-3 p.m.
  • Thursday: 7 a.m.-3 p.m.
  • Friday: 7 a.m.-3 p.m.
  • Saturday: Closed
  • Sunday: Closed

Ulster County Offices

Kingston
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: Closed
  • Sunday: Closed
New Paltz
  • Monday: 8 a.m.–4:45 p.m. (closed for lunch 12:30-1:30 p.m.)
  • Tuesday: 8 a.m.–4:45 p.m. (closed for lunch 12:30-1:30 p.m.)
  • Wednesday: 8 a.m.–4:45 p.m. (closed for lunch 12:30-1:30 p.m.)
  • Thursday: 8 a.m.–4:45 p.m. (closed for lunch 12:30-1:30 p.m.)
  • Friday: 8 a.m.–4:45 p.m. (closed for lunch 12:30-1:30 p.m.)
  • Saturday: Closed
  • Sunday: Closed

Westchester County Offices

Briarcliff Manor
  • Monday: 8:30 a.m.–5 p.m.
  • Tuesday: 8:30 a.m.–5 p.m.
  • Wednesday: 8:30 a.m.–5 p.m.
  • Thursday: 8:30 a.m.–5 p.m.
  • Friday: 8:30 a.m.–5 p.m.
  • Saturday: Closed
  • Sunday: Closed
Croton-on-Hudson

(Temporarily closed until further notice)

  • Monday: 8 a.m.–4:45 p.m. (closed for lunch 12-1 p.m.)
  • Tuesday: 8 a.m.–4:45 p.m. (closed for lunch 12-1 p.m.)
  • Wednesday: 8 a.m.–4:45 p.m. (closed for lunch 12-1 p.m.)
  • Thursday: 8 a.m.–4:45 p.m. (closed for lunch 12-1 p.m.)
  • Friday: 8 a.m.–4:45 p.m. (closed for lunch 12-1 p.m.)
  • Saturday: Closed
  • Sunday: Closed
Jefferson Valley
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: 9 a.m.–12 p.m.
  • Sunday: Closed

EKG Available

Katonah
  • Monday: 8:30 a.m.–5 p.m.
  • Tuesday: 8:30 a.m.–5 p.m.
  • Wednesday: 8:30 a.m.–5 p.m.
  • Thursday: 8:30 a.m.–5 p.m.
  • Friday: 8:30 a.m.–5 p.m.
  • Saturday: 9 a.m.–12:30 p.m.
  • Sunday: Closed
Mount Kisco
  • Monday: 7:30 a.m.–6 p.m.
  • Tuesday: 7:30 a.m.–6 p.m.
  • Wednesday: 7:30 a.m.–6 p.m.
  • Thursday: 7:30 a.m.–6 p.m.
  • Friday: 7:30 a.m.–6 p.m.
  • Saturday: 8 a.m.–12:30 p.m.
  • Sunday: Closed

EKG Available

Somers
  • Monday: 8 a.m.–4:30 p.m.
  • Tuesday: 8 a.m.–4:30 p.m.
  • Wednesday: 8 a.m.–4:30 p.m.
  • Thursday: 8 a.m.–4:30 p.m.
  • Friday: 8 a.m.–4:30 p.m.
  • Saturday: Closed
  • Sunday: Closed
Yorktown Heights
  • Monday: 8:30 a.m.–5:30 p.m.
  • Tuesday: 8:30 a.m.–5:30 p.m.
  • Wednesday: 8:30 a.m.–5:30 p.m.
  • Thursday: 8:30 a.m.–5:30 p.m.
  • Friday: 8:30 a.m.–5:30 p.m.
  • Saturday: Closed
  • Sunday: Closed