Medicare Advantage Provider Directory

The network providers listed in the directory below have agreed to provide you with your health care services. All providers in this provider directory accept both Medicare and Medicaid.

  • For dental services – Search the online directory – Select Choose a location and plan, enter your address, city, or zip code, and under Plan name select NY Nascentia Medicare listed under NY. For assistance please call 1-844-824-2024 (TTY: 1-800-466-7566).
  • For vision services – Search the online directory. For assistance please call Member Services at 1-888-477-0090 (TTY: 711) or Superior Vision at 1-800-879-6901.
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Kosgei, Eliud K, NP

Listed in ,
Evergreen Health Services
County:
Erie
Accepting New Patients:
Yes
Language(s):
Swahili
Gender:
Male
(716) 847-2441

206 South Elmwood Avenue
Buffalo, NY 14201

Koshy, Susi, NP

Listed in ,
SUNY Health Science Center at Syracuse dba University Hospital
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(315) 464-5979

750 East Adams Street
Syracuse, NY 13210

Kosinski, Lindsay, MD

Listed in ,
University Orthopaedics Services Inc.
UBMD Orthopaedics & Sports Medicine
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 204-3200

111 North Maplemere Road
Suite 100
Williamsville, NY 14221

Kosinski, Lindsay, MD

Listed in ,
University Orthopaedics Services Inc.
UBMD Orthopaedics & Sports Medicine
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 204-3200

5959 Big Tree Road
Suite 108
Orchard park, NY 14124

Kosinski, Lindsay, MD

Listed in ,
University Orthopaedics Services Inc.
UBMD Orthopaedics & Sports Medicine
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 204-3200

462 Grider Street
Buffalo, NY 14215

Kosior, Amanda Lynn, DNP;NP

Listed in ,
Erie County Medical Center
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 961-6091

462 Grider Street
Buffalo, NY 14215

Kosiorek, Samantha A, PA

Listed in ,
University of Rochester
University Urology Associates
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(585) 341-9607

1000 South Avenue
Rochester, NY 14620

Kosiorek, Samantha A, PA

Listed in ,
University of Rochester
University of Rochester Neurosurgery Group
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(585) 341-9607

1000 South Avenue
Rochester, NY 14620

Kosko, Debra, RN

Listed in ,
United Memorial Medical Center
County:
Genesee
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
127 North Street
Batavia, NY 14020

Kosmerl, Julie, NP

Listed in , ,
Kaleida Health
Buffalo General Medical Center
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 859-7200

100 High Street
Buffalo, NY 14203

Kosowski, Mary Katherine, NP

Listed in ,
Trinity Medical WNY, PC
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 677-6800

2157 Main Street
Buffalo, NY 14214

Kosowski, Mary Katherine, NP

Listed in ,
Trinity Medical WNY, PC
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 677-6800

2605 Harlem Road
Buffalo, NY 14225

Kosowski, Mary Katherine, NP

Listed in ,
Trinity Medical WNY, PC
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 677-6800

2950 Elmwood Avenue
Buffalo, NY 14217

Kosowski, Mary Katherine, NP

Listed in ,
Trinity Medical WNY, PC
County:
Niagara
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 677-6800

5300 Military Road
Lewiston, NY 14092

Kosowski, Mary Katherine, NP

Listed in ,
Trinity Medical WNY, PC
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 677-6800

565 Abbott Road
Buffalo, NY 14220

Kosowski, Mary Katherine, NP

Listed in ,
Trinity Medical WNY, PC
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 332-2121

600 Harlem Road
Buffalo, NY 14224

Koss, Marvin, MD

Listed in ,
Upstate University Medical Associates - Psychiatry Faculty Practice, Inc.
Psychiatry Faculty Practice, Inc (E.Gen)
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
Other Specialties:
Psychosomatic Medicine
(315) 464-3265

600 East Genesee Street
Suite 217
Syracuse, NY 13202

Koss, Marvin, MD

Listed in ,
Upstate University Medical Associates - Psychiatry Faculty Practice, Inc.
Psychiatry Faculty Practice, Inc (TU4)
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
Other Specialties:
Psychosomatic Medicine
(315) 464-3265

719 Harrison Street
Syracuse, NY 13210

Koss, Marvin, MD

Listed in ,
Upstate University Medical Associates - Psychiatry Faculty Practice, Inc.
Psychiatry Faculty Practice, Inc (UH)
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
Other Specialties:
Psychosomatic Medicine
(315) 464-3265

750 East Adams Street
Syracuse, NY 13210

Kostamo, Kathryne, MD

Listed in ,
Albany Medical Center
AMC Multispecialty - Valatie Medical Arts
County:
Columbia
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(518) 264-2898

1301 River Street
Suite 101
Valatie, NY 12184

Kostamo, Kathryne, MD

Listed in ,
Albany Medical Center
Obstetrics and Gynecology at AMC
County:
Albany
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(518) 262-4942

391 Myrtle Avenue
MC-74 Suite 2
Albany, NY 12208

Kostamo, Kathryne, MD

Listed in ,
Columbia Memorial Health
Women's Health Center-Hudson
County:
Columbia
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(518) 697-5467

71 Prospect Avenue
Suite 240
Hudson, NY 12534

Kostarellis, Zoe M, MD

Listed in ,
University of Rochester
County:
Monroe
Accepting New Patients:
No
Language(s):
English
Gender:
Female
(585) 276-7575

2135 Buffalo Road
Rochester, NY 14624

Kostek, Gary J, DC

Listed in ,
Kostek Chiropractic Offices, PLLC
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(716) 634-4133

8695 Sheridan Drive
Buffalo, NY 14221

Kostick, Richard A, DO

Listed in ,
Guthrie Medical Group, P.C.
County:
Bradford
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(570) 887-4000

1 Guthrie Square
Sayre, PA 18840
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Online directory last updated on October 10, 2025

Download the Provider Directory (pdf), updated August 1, 2025

Page last updated on October 13, 2025