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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German, John William, MD

Listed in ,
Albany Medical Center
Green Medical Arts Center
County:
Albany
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 262-5088

159 Jefferson Heights
Suite 108
Catskill, NY 12414

German, John William, MD

Listed in ,
Albany Medical Center
Neurology Group
County:
Albany
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 262-5088

25 Hackett Boulevard
MC 10
Albany, NY 12208

German, John William, MD

Listed in ,
Albany Medical Center
Comprehensive Spine and Pain Center
County:
Albany
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 264-2225

391 Myrtle Avenue
Suite 1B
Albany, NY 12208

German, John William, MD

Listed in ,
Albany Medical Center
Department of Neurosurgery
County:
Albany
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 262-5088

43 New Scotland Avenue
MC 10
Albany, NY 12208

German, John William, MD

Listed in ,
Albany Medical Center
Malta North Multispecialty
County:
Saratoga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 264-1200

6 Medical Park Drive
Suite 203
Malta, NY 12020

German, John William, MD

Listed in , ,
Albany Medical Center
AMC Internal Medicine, Pediatrics, Sports Medicine and Specialty Care
County:
Albany
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 264-5053

1019 New Loudon Road
Cohoes, NY 12047

German, Kenia Maria, MD

Listed in ,
University of Rochester
Highland Hospital of Rochester
County:
Monroe
Accepting New Patients:
No
Language(s):
English, Spanish
Gender:
Female
(585) 784-7848

135 Corporate Woods
Suite 200C
Rochester, NY 14623

German, Kenia Maria, MD

Listed in ,
University of Rochester
Strong Medical Group
County:
Monroe
Accepting New Patients:
No
Language(s):
English, Spanish
Gender:
Female
(585) 784-7848

135 Corporate Woods
Suite 200C
Rochester, NY 14623

German, Kenia Maria, MD

Listed in ,
University of Rochester
University of Rochester - Primary Care
County:
Monroe
Accepting New Patients:
No
Language(s):
English, Spanish
Gender:
Female
(585) 784-7848

135 Corporate Woods
Suite 200C
Rochester, NY 14623

German, Kenia Maria, MD

Listed in ,
University of Rochester
University of Rochester - Primary Care
County:
Monroe
Accepting New Patients:
No
Language(s):
English, Spanish
Gender:
Female
(585) 784-7848

454 East Broad Street
Suite #100
Rochester, NY 14607

Gerretsen, Carly Ann, NP

Listed in , ,
Erie County Medical Center
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 898-3073

462 Grider Street
Buffalo, NY 14215

Gershik-Gleyzer, Margarita, LSCW, MA

Listed in ,
United Health Services Hospitals, Inc. - Delaware Valley Hospital
County:
Delaware
Language(s):
English
Gender:
Female
(607) 865-2400

2 Titus Place
Walton, NY 13856

Gerster, Sabrina M, NP

Listed in ,
Windsong Radiology Group, P.C.
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 631-2500

55 Spindrift Drive
Suite 220
Williamsville, NY 14221

Gervais, Melissa, NP

Listed in , ,
Upstate University Medical Associates - University Surgical Associates, LLP
Department of Medicine Medical Service Group
County:
Onondaga
Language(s):
English
Gender:
Female
(315) 464-9360

725 Irving Avenue
Suite 314
Syracuse, NY 13210

Gervais, Melissa Lynn, NP-C

Listed in , ,
St. Joseph's Hospital Health Center
Infectious Disease Clinic
County:
Onondaga
Language(s):
English
Gender:
Female
(315) 448-6253

301 Prospect Avenue
Suite 706
Syracuse, NY 13203

Gervais, Melissa Lynn, NP-C

Listed in ,
St. Joseph's Medical PC
County:
Onondaga
Language(s):
English
Gender:
Female
(315) 448-5111

301 Prospect Avenue
Syracuse, NY 13203

Gerwitz, Megan, AGNP-C

Listed in ,
Mobile Physician Services, PLLC
Mobile Primary Care
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 893-1010

40 La Riviere Drive
Suite 201
Buffalo, NY 14202

Gerwitz, Megan, AGNP-C

Listed in ,
Physician Mobile Medical Care, PC
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 893-1010

40 La Riviere Drive
Suite 201A
Buffalo, NY 14202

Gestring, Mark Lawrence, MD

Listed in ,
University of Rochester
County:
Monroe
Accepting New Patients:
No
Language(s):
English
Gender:
Male
(585) 275-2100

601 Elmwood Avenue
Rochester, NY 14642

Gestring, Mark Lawrence, MD

Listed in ,
University of Rochester
University of Rochester Surgical Associates
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(585) 275-3376

601 Elmwood Avenue
Rochester, NY 14642

Gestring, Mark Lawrence, MD

Listed in ,
University of Rochester
Trauma Burn Emergency Surgery of University of Rochester
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(585) 275-3376

601 Elmwood Avenue
Rochester, NY 14642

Gestring, Mark Lawrence, MD

Listed in ,
University of Rochester
Acute Care Trauma of University of Rochester
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(585) 275-3376

601 Elmwood Avenue
Rochester, NY 14642

Geyer, Lindsay, PA

Listed in ,
F.F. Thompson Hospital
County:
Ontario
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
335 Parrish Street
Canandaigua, NY 14424

Geyer, Rachael E, FNP-BC

Listed in ,
Bassett Healthcare Network
Bassett Health Center Cherry Valley
County:
Otsego
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(607) 264-3036

2 Main Street
Cherry Valley, NY 13320

Ghadiali, Mohsin, MD

Listed in ,
St. Lawrence Radiology Associates, PC
Pinnacle Upright MRI of Syracuse
County:
Onondaga
Accepting New Patients:
Yes
Language(s):
English
(315) 303-0088

3881 NY-31
Unit 100
Liverpool, NY 13090
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Online directory last updated on October 10, 2025

Download the Provider Directory (pdf), updated October 10, 2025

Page last updated on October 16, 2025