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Internal Medicine - Gastroenterology Specialists in Billings, MT

Browse 8 verified Internal Medicine - Gastroenterology providers practicing in Billings, Montana.

8 Healthcare Providers
Showing 1–8 of 8 providers
Sorted by Name (A-Z)

Dr. Stephen E Baum , MD

Internal Medicine - Gastroenterology

Active NPI Status ✓ Accepts Medicare Assignment
1144 N 28th St, Suite C, Billings, MT 591010110
Phone: 4062386380
NPI Identifier 1083650485
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Dr. Michael C. Fischer , MD

Internal Medicine - Gastroenterology

Active NPI Status ✓ Accepts Medicare Assignment
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1710098579
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Dr. Steven W. Hammond , MD

Internal Medicine - Gastroenterology

Active NPI Status ✓ Accepts Medicare Assignment
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1588766117
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Dr. Keri L. Hill , MD

Internal Medicine - Gastroenterology

Active NPI Status ✓ Accepts Medicare Assignment Telehealth Services Available
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1528095155
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Dr. Thomas Korb , MD

Internal Medicine - Gastroenterology

Active NPI Status
2900 12th Ave N, Suite 500e, Billings, MT 591017506
Phone: 4062386380
NPI Identifier 1821013756
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Dr. Christopher J. Mcneill , MD

Internal Medicine - Gastroenterology

Active NPI Status
2900 12th Ave N, Suite 500east, Billings, MT 591017506
Phone: 4062386380
NPI Identifier 1437122694
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Dr. Mark Rumans , MD

Internal Medicine - Gastroenterology

Active NPI Status
2825 8th Ave N, Billings, MT 591010909
Phone: 4062382500
NPI Identifier 1699858340
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Dr. Nina Tomaszewski , MD

Internal Medicine - Gastroenterology

Notice of NPI Deactivation & Inactive Practice Status

⚠️ Deactivated NPI: July 10, 2025
1144 N 28th St, Suite C, Billings, MT 591010110
Phone: 4062386380
NPI Identifier 1356387179
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