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Important Alerts
Updates

As of August 1, 2025, Optum Allergy and Immunology in Long Beach has closed, and the providers have relocated to Optum Allergy and Immunology in Bay Shore.

As of July 14, 2025, Pediatrics in Bayonne located at 506 Broadway has  relocated to 191 Lefante Way.

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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From primary care physicians to our many specialties, Optum is here to help you find the right expert for you. Enter your location to enhance your search experience.

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Accepting new patients
Lloyd Mark Loft , MD
Lloyd Mark Loft , MD
ENT (Ear, Nose and Throat)
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Lloyd Mark Loft , MD
ENT (Ear, Nose and Throat)
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111 Bedford Road
Katonah, NY 10536
110 South Bedford Road
Mount Kisco , NY 10549
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Accepting new patients
Danielle LoGiurato, MD
Danielle LoGiurato, MD
Pediatric Endocrinology
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Danielle LoGiurato, MD
Pediatric Endocrinology
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60 Merritt Boulevard
Fishkill, NY 12524
1561 Ulster Avenue
Lake Katrine, NY 12449
Oakwood Commons
Poughkeepsie, NY 12601
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Fast Pass Provider
Accepting new patients
Jeremy Loloi, MD
Jeremy Loloi, MD
Orthopedics
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Jeremy Loloi, MD
Orthopedics
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2800 Marcus Avenue
Lake Success, NY 11042
575 Underhill Boulevard
Syosset, NY 11791
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Accepting new patients
Wendy Tonia Longo, DO
Wendy Tonia Longo, DO
Pediatrics (Primary Care)
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Wendy Tonia Longo, DO
Pediatrics (Primary Care)
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20 Addison Place
Valley Stream, NY 11580
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Fast Pass Provider
Accepting new patients
Juan Lopez, MD
Juan Lopez, MD
Cardiology
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Juan Lopez, MD
Cardiology
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1 Maywood Ave
Maywood, NJ 07607
201 State Rt 17,
Rutherford, NJ 07070
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Natalie Lorentzos, FNP-BC
Natalie Lorentzos, FNP-BC
Dermatology
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Natalie Lorentzos, FNP-BC
Dermatology
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110 South Bedford Road
Mount Kisco , NY 10549
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Accepting new patients
Brian Lorenzen, FNP
Brian Lorenzen, FNP
Orthopedics
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Brian Lorenzen, FNP
Orthopedics
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1978 Crompond Road
Cortlandt Manor, NY 10567
3680 Hill Boulevard
Jefferson Valley, NY 10535
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Accepting new patients
William D. Losquadro, MD
William D. Losquadro, MD
Cosmetic Surgery, Facial Plastic & Reconstructive Surgery
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William D. Losquadro, MD
Cosmetic Surgery, Facial Plastic & Reconstructive Surgery
To make an appointment,
contact the location directly
185 NY-312
Brewster, NY 10509
3680 Hill Boulevard
Jefferson Valley, NY 10535
111 Bedford Road
Katonah, NY 10536
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Accepting new patients
Krislin Louko, APN
Krislin Louko, APN
Pediatrics (Primary Care)
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Krislin Louko, APN
Pediatrics (Primary Care)
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3350 State Route 138
Wall, NJ 07719
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Accepting new patients
Christopher Lovell, DPM
Christopher Lovell, DPM
Podiatry
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Christopher Lovell, DPM
Podiatry
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185 NY-312
Brewster, NY 10509
90 South Bedford Road
Mount Kisco, NY 10549
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Accepting new patients
Michael Ross Lowenthal, MD
Michael Ross Lowenthal, MD
Internal Medicine (Primary Care)
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Michael Ross Lowenthal, MD
Internal Medicine (Primary Care)
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2110 Northern Boulevard
Manhasset, NY 11030
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Allison R. Lucchesi, MD
Allison R. Lucchesi, MD
Family Medicine (Primary Care)
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Allison R. Lucchesi, MD
Family Medicine (Primary Care)
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264 Main Street
New Paltz, NY 12561
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Accepting new patients
Jeffrey Howard Lumerman, MD
Jeffrey Howard Lumerman, MD
Urology
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Jeffrey Howard Lumerman, MD
Urology
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601 Franklin Avenue
Garden City, NY 11530
1 Dakota Drive
Lake Success, NY 11042
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Accepting new patients
Julie A. Luttinger, MD
Julie A. Luttinger, MD
Pediatrics (Primary Care)
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Julie A. Luttinger, MD
Pediatrics (Primary Care)
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1111 Park Avenue
New York, NY 10128
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Accepting new patients
Katherine C. Ma, MD, FAAOS
Katherine C. Ma, MD, FAAOS
Foot and Ankle Surgery, Orthopedics
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Katherine C. Ma, MD, FAAOS
Foot and Ankle Surgery, Orthopedics
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1978 Crompond Road
Cortlandt Manor, NY 10567
3680 Hill Boulevard
Jefferson Valley, NY 10535
90 South Bedford Road
Mount Kisco, NY 10549
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Accepting new patients
Jerry Mabagos, MD
Jerry Mabagos, MD
Pediatrics (Primary Care)
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Jerry Mabagos, MD
Pediatrics (Primary Care)
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525 Route 70
Brick, NJ 08724
34 Manchester Ave
Forked River, NJ 08731
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Accepting new patients
Lori N. MacIsaac, RPA-C
Lori N. MacIsaac, RPA-C
Gynecology
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Lori N. MacIsaac, RPA-C
Gynecology
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1561 Ulster Avenue
Lake Katrine, NY 12449
6734 Route 9
Rhinebeck, NY 12572
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Accepting new patients
Stacey A. Madoff, MD, FACOG
Stacey A. Madoff, MD, FACOG
Gynecology
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Stacey A. Madoff, MD, FACOG
Gynecology
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2515 South Road
Poughkeepsie, NY 12601
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Fast Pass Provider
Accepting new patients
Shabnam Maghsood, MD
Shabnam Maghsood, MD
Pediatrics (Primary Care)
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Shabnam Maghsood, MD
Pediatrics (Primary Care)
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525 Route 70
Brick, NJ 08724
34 Manchester Ave
Forked River, NJ 08731
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Accepting new patients
Amy Magneson, MD, FACOG
Amy Magneson, MD, FACOG
OBGYN (Obstetrics & Gynecology)
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Amy Magneson, MD, FACOG
OBGYN (Obstetrics & Gynecology)
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90 South Bedford Road
Mount Kisco, NY 10549
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Tricia Mahabir, DO
Tricia Mahabir, DO
Anesthesiology
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Tricia Mahabir, DO
Anesthesiology
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Fast Pass Provider
Accepting new patients
Delilah Mahase, DNP
Delilah Mahase, DNP
Internal Medicine (Primary Care)
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Delilah Mahase, DNP
Internal Medicine (Primary Care)
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40 Monmouth Rd
Oakhurst, NJ 07755
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Accepting new patients
Ayesha Mahmoud, MD, FAAP
Ayesha Mahmoud, MD, FAAP
Pediatrics (Primary Care)
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Ayesha Mahmoud, MD, FAAP
Pediatrics (Primary Care)
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191 Lefante Way
Bayonne, NJ 07002
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Vanessa Mahoney, CRNA
Vanessa Mahoney, CRNA
Anesthesiology
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Vanessa Mahoney, CRNA
Anesthesiology
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Accepting new patients
Ummekalsoom Rehman Malik, MD
Ummekalsoom Rehman Malik, MD
Hematology and Oncology
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Ummekalsoom Rehman Malik, MD
Hematology and Oncology
To make an appointment,
contact the location directly
2800 Marcus Avenue
Lake Success, NY 11042
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