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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Marzouk, Mark F, MD

Listed in ,
Upstate University Medical Associates - University Otolaryngology Associate of Central New York, LLP
Upstate University Medicine at Township 5
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(315) 551-6000

208 Township Boulevard
Suite 200
Camillus, NY 13031

Marzouk, Mark F, MD

Listed in ,
Upstate University Medical Associates - University Otolaryngology Associate of Central New York, LLP
North East
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(315) 329-7350

4304 Medical Center Drive
Fayetteville, NY 13066

Marzouk, Mark F, MD

Listed in ,
Upstate University Medical Associates - University Otolaryngology Associate of Central New York, LLP
Community Campus
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(315) 492-3741

4900 Broad Road
Suite P
Syracuse, NY 13215

Marzouk, Mark F, MD

Listed in ,
Upstate University Medical Associates - University Otolaryngology Associate of Central New York, LLP
North Medical
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(315) 452-2350

5100 West Taft Road
Suite 3E
Liverpool, NY 13088

Marzouk, Mark F, MD

Listed in ,
Upstate University Medical Associates - University Otolaryngology Associate of Central New York, LLP
University Otolaryngology Associates of CNY, LLP
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(315) 464-4636

750 East Adams Street
Syracuse, NY 13210

Mas, Eddie E, MD

Listed in ,
Mercy Hospital Of Buffalo
County:
Erie
Accepting New Patients:
Yes
Language(s):
Spanish
Gender:
Male
(716) 828-3520

515 Abbott Road
Suite 302 Suite 304
Buffalo, NY 14220

Masaba, Erin, MD

Listed in , ,
University of Rochester
Reproductive Endocrinology/Infertility Group of University of Rochester
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(585) 487-3378

500 Red Creek Drive
Suite 220
Rochester, NY 14623

Masarech, Martin, MD

Listed in ,
United Health Services Hospitals, Inc. - Binghamton General Hospital
County:
Chenango
Accepting New Patients:
No
Language(s):
English
Gender:
Male
(607) 656-4115

15 Birdsall Street
Greene, NY 13778

Mase, Megan, NP

Listed in ,
Wyoming County Community Health System
County:
Wyoming
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(585) 786-8940

400 North Main Street
Warsaw, NY 14569

Maseduca, Aimee, PA

Listed in ,
F.F. Thompson Hospital
County:
Ontario
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(585) 396-6000

350 Parrish Street
Canandaigua, NY 14424

Mashaw, Zachary M, MD

Listed in ,
Ogdensburg Family Practice LLC
County:
St. Lawrence
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(315) 393-9268

921 State Street
Ogdensburg, NY 13669

Mashinic, Elisabeth, MD

Listed in ,
Erie County Medical Center
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 898-5759

462 Grider Street
Buffalo, NY 14215

Mashkevich, Grigoriy, MD

Listed in , ,
Hudson Dermatology, PC
Hudson Dermatology - Nanuet
County:
Rockland
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(845) 415-5575

408 Market Street
Nanuet, NY 10954

Mashkevich, Grigoriy, MD

Listed in , ,
Hudson Dermatology, PC
Hudson Dermatology - Kingston
County:
Ulster
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(845) 338-3200

40 Hurley Avenue
Suite 10
Kingston, NY 12401

Mashkevich, Grigoriy, MD

Listed in , ,
Hudson Dermatology, PC
Hudson Dermatology - Hudson
County:
Columbia
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 412-3300

98 Green Street
Suite 4
Hudson, NY 12534

Mashkevich, Grigoriy, MD

Listed in , ,
Hudson Dermatology, PC
Hudson Dermatology - Somers
County:
Westchester
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(914) 617-8950

336 US Route 202
Suite 2
Somers, NY 10589

Mashkevich, Grigoriy, MD

Listed in , ,
Hudson Dermatology, PC
Hudson Dermatology - Tarrytown
County:
Westchester
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(914) 829-8200

155 White Plains Road
Suite 109, East Wing
Tarrytown, NY 10591

Mashkevich, Grigoriy, MD

Listed in , ,
Hudson Dermatology, PC
Hudson Dermatology - Cornwall
County:
Orange
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(845) 458-8188

55 Quaker Avenue
Suite 102
Cornwall, NY 12518

Mashkevich, Grigoriy, MD

Listed in , ,
Hudson Dermatology, PC
Hudson Dermatology - Fishkill
County:
Dutchess
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(845) 896-7730

969 Main Street
Suite D
Fishkill, NY 12424

Mashkevich, Grigoriy, MD

Listed in , ,
Hudson Dermatology, PC
Hudson Dermatology - Poughkeepsie
County:
Dutchess
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(845) 473-2350

29 Fox Street
4th Floor
Poughkeepsie, NY 12601

Masia, Nicholas G, DC

Listed in ,
Christopher Chiropractic Center, Ll
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(716) 626-5224

5842 Main Street
Williamsville, NY 14221

Masiello, Andrea Maria, BSN; FNP-C; NP; RN

Listed in ,
University of Rochester Medical Center
Trauma Burn Emergency Surgery of University of Rochester
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(585) 275-5100

601 Elmwood Avenue
Rochester, NY 14642

Masiello, Mallory, PA

Listed in ,
SUNY Health Science Center at Syracuse dba University Hospital
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(315) 464-5726

750 East Adams Street
Syracuse, NY 13210

Masiero, Lauren, LCSW

Listed in ,
Valera Medical PC
Valera Health
County:
New York County (Manhattan)
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(646) 450-7748

139 Centre Street
Suite 824
New York, NY 10013

Maslak, Patricia, FNP-BC

Listed in ,
SUNY Health Science Center at Syracuse dba University Hospital
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(315) 464-6255

750 East Adams Street
Syracuse, NY 13210
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Online directory last updated on January 2, 2026

Download the Provider Directory (pdf), updated January 2, 2026

Page last updated on January 29, 2026