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Internal Medicine Providers in Williamsville, NY

Browse 68 verified Internal Medicine providers practicing in Williamsville, New York.

68 Healthcare Providers
Showing 21–40 of 68 providers
Sorted by Name (A-Z)

Dr. John D Hall , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
100 College Pkwy Ste 260, Williamsville, NY 142216800
Phone: 7166350688
NPI Identifier 1912969304
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Dr. William Michael Hartrich , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
1835 Maple Rd, Williamsville, NY 142212711
Phone: 7166345410
NPI Identifier 1629026703
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Dr. Timothy Michael Heyden , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
1835 Maple Rd, Williamsville, NY 142212711
Phone: 7166341908
NPI Identifier 1427012467
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Dr. Shuman Hua , MD

Internal Medicine

Active NPI Status Telehealth Services Available
325 Essjay Rd, Williamsville, NY 142218243
Phone: 7166301037
NPI Identifier 1245219229
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Dr. Louis William Irmisch , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
11 W Spring St, Williamsville, NY 142215438
Phone: 7165653605
NPI Identifier 1467417220
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Dr. Gaurav Jain , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment Telehealth Services Available
400 International Dr., Williamsville, NY 14221
Phone: 7166313555
NPI Identifier 1447416979
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Dr. Caroline Diana Jones , MD

Internal Medicine

Active NPI Status
325 Essjay Rd, Williamsville, NY 142218243
Phone: 7166564880
NPI Identifier 1366146102
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Dr. Brian Michael Karaszewski , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
400 International Dr., Williamsville, NY 14221
Phone: 7166313555
NPI Identifier 1255478376
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Dr. Aalia Jeelani Khan , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
193 S Union Rd, Williamsville, NY 142216531
Phone: 6095851122
NPI Identifier 1891288650
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Dr. Sarwat Khawar , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
8433 Main St, Williamsville, NY 142216119
Phone: 7166323535
NPI Identifier 1558396325
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Colleen Klos

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment Telehealth Services Available
1540 Maple Rd, Williamsville, NY 142213647
Phone: 7165683514
NPI Identifier 1003567603
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Dr. Eric J Koch , DO

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
297 Spindrift Dr, Williamsville, NY 14221
Phone: 7166350688
NPI Identifier 1053373456
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Dr. Maria Kontos , DO

Internal Medicine

Active NPI Status
325 Essjay Rd, Williamsville, NY 142218243
Phone: 7166564463
NPI Identifier 1003302910
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Dr. George Kotlewski , MD

Internal Medicine

Active NPI Status
1961 Wehrle Dr, Williamsville, NY 142218460
Phone: 7166324242
NPI Identifier 1013946169
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Dr. Anderson Ka Ho Lai , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
1540 Maple Rd, Williamsville, NY 14221
Phone: 7165683514
NPI Identifier 1003327321
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Dr. Foong Ming Lam , MD

Internal Medicine

Active NPI Status
300 International Dr, Williamsville, NY 142215781
Phone: 7166263033
NPI Identifier 1518097112
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Dr. John A Leone , DO

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
61 Maple Rd, Williamsville, NY 142212918
Phone: 7165651234
NPI Identifier 1871558825
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Dr. Sameer Shamoon Mamnoon , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment
8167 Sheridan Drive, Suite 100, Williamsville, NY 14221
Phone: 7162768726
NPI Identifier 1881663144
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Dr. Gina Marie Mangione , MD

Internal Medicine

Active NPI Status ✓ Accepts Medicare Assignment Telehealth Services Available
111 N Maplemere Rd Ste 200, Williamsville, NY 142213182
Phone: 7166262644
NPI Identifier 1821594151
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Dr. Martin Neal Mango , MD

Internal Medicine

Notice of NPI Deactivation & Inactive Practice Status

⚠️ Deactivated NPI: June 12, 2025
1825 Maple Rd, Williamsville, NY 142212723
Phone: 7166310834
NPI Identifier 1013093889
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