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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Rittenhouse, Kathy S, NP

Listed in ,
Saratoga Hospital
SHMG - Surgery Center
County:
Saratoga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(518) 693-4400

3050 Route 50
1st floor
Saratoga Springs, NY 12866

Rittenhouse, Kathy S, NP

Listed in ,
Saratoga Hospital
County:
Saratoga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(518) 580-2800

211 Church Street
Saratoga Springs, NY 12866

Ritter, Beth A, MD

Listed in , ,
University of Rochester
University Otolaryngology Associates
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
Other Specialties:
Neck Surgery
(585) 758-5700

2365 Clinton Avenue South
Suite 200
Rochester, NY 14618

Ritter, Beth A, MD

Listed in , ,
University of Rochester
University Otolaryngology Associates
County:
Monroe
Language(s):
English
Gender:
Female
Other Specialties:
Neck Surgery
(585) 723-9100

60 Greece Center Drive
Suite 2
Rochester, NY 14612

Ritter, Christopher, MD

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

462 Grider Street
Buffalo, NY 14215

Ritter, Christopher, MD

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

4949 Harlem Road
Amherst, NY 14226

Ritter, Christopher, MD

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

5959 Big Tree Road
Suite 108
Orchard Park, NY 14127

Ritter, Christopher, MD

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

111 North Maplemere Road
Suite 100
Williamsville, NY 14221

Ritter, Christopher, MD

Listed in ,
Erie County Medical Center
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(716) 898-3414

462 Grider Street
Buffalo, NY 14215

Ritter, Christopher A, MD

Listed in ,
University Orthopaedic Services, Inc.
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(716) 898-5506

462 Grider Street
Buffalo, NY 14215

Ritter, Christopher A, MD

Listed in ,
University Orthopaedic Services, Inc.
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(716) 204-3200

4949 Harlem Road
Amherst, NY 14226

Ritter, Christopher A, MD

Listed in ,
Erie County Medical Center Corporation
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(716) 831-8612

462 Grider Street
Ecmc Family Health Center
Buffalo, NY 14215

Ritter, Kaitlin, MD

Listed in ,
Kaleida Health
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 859-8289

100 High Street
Buffalo, NY 14203

Ritter Schmidt, Dona Hue, SLP

Listed in ,
University At Buffalo Speech Language
County:
Erie
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(716) 651-0911

52 Biomedical Education Building
Buffalo, NY 14214

Rittmiller, Bayly Marie, PA

Listed in ,
Saratoga Hospital
SHMG - Primary Care - Wilton
County:
Saratoga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(518) 886-5800

3065 Route 50
Suite 30 Unit 106
Saratoga Springs, NY 12866

Rittmiller, Bayly Marie, PA

Listed in ,
Saratoga Hospital
SHMG - Primary Care - Wilton
County:
Saratoga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(518) 886-5800

3044 Route 50
Saratoga Springs, NY 12866

Rittmiller, Bayly Marie, PA

Listed in ,
Saratoga Hospital
SHMG - Urgent Care @ Wilton Medical Arts
County:
Saratoga
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(518) 580-2273

3040 Route 50
Saratoga Springs, NY 12866

Rittwage, Mariah, PA

Listed in ,
St. James Hospital
County:
Steuben
Accepting New Patients:
Yes
Language(s):
English
Gender:
Female
(607) 385-3740

7309 Seneca Road North
Suite 107
Hornell, NY 14843

Ritz, Howard, PA

Listed in ,
Glens Falls Hospital
Greenwich Medical Center
County:
Washington
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 926-1380

1134 State Route 29
Greenwich, NY 12834

Ritz, Howard, PA

Listed in ,
Glens Falls Hospital
Adirondack ENT
County:
Warren
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(518) 926-1380

2 Broad Street Plaza
Glens Falls, NY 12801

Ritz, Howard, PA

Listed in ,
Glens Falls Hospital
County:
Warren
Accepting New Patients:
No
Language(s):
English
Gender:
Male
(518) 926-1000

100 Park Street
Glens Falls, NY 12801

Ritzel, Andrea 4, NP

Listed in ,
University of Rochester
Hematology Clinical Group
County:
Monroe
Accepting New Patients:
No
Language(s):
English
Gender:
Female
(585) 275-5823

601 Elmwood Avenue
Rochester, NY 14642

Ritzel, Andrea Nicole, NP

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

601 Elmwood Avenue
Rochester, NY 14642

Ritzel, Noah, PA-C

Listed in ,
University of Rochester
Cardiology Clinical Group
County:
Monroe
Accepting New Patients:
Yes
Language(s):
English
Gender:
Male
(585) 275-9000

601 Elmwood Avenue
Rochester, NY 14642

Rivard, Natalie Horn, FNP

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

301 Prospect Avenue
Syracuse, NY 13203
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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