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Internal Medicine Providers in Billings, MT

Browse 80 Internal Medicine providers listed in NPPES with a practice address in Billings, Montana.

80 Healthcare Providers

How Billings compares with the U.S.

Billings has 67 clinicians in Internal Medicine per 100,000 residents, about 1.5 times the U.S. rate of 44.

That is 80 active clinicians in Internal Medicine with a practice address in Billings, for a population of 119,434.

The Montana rate is 29 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

96% of clinicians in Internal Medicine in Billings listed in the CMS Medicare file (49 of 51) accept Medicare assignment. That is similar to the Montana share of 97%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

25% of clinicians in Internal Medicine in Billings listed in the CMS Medicare file (13 of 51) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the Montana share of 25%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Billings, MT

Source: CMS PECOS
PECOS Enrolled Specialists 61 In Billings, MT
Part B Lab & Imaging Eligible 61 Diagnostic Referrals
DME Ordering Eligible 65 Durable Medical Equipment
Home Health Agency Referrals 61 HHA Ordering Eligible
Showing 1โ€“20 of 80 providers
With recent CMS data first, then Aโ€“Z

Dr. Yee Chuan Ang , MD

Internal Medicine

Active NPI Status
801 N 29th St, Billings, MT 59101
Phone: 4062382500
NPI Identifier 1104138668
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Dr. Faranak Argani , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1558475954
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Dr. Erica Ryberg Bruen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2900 12th Ave N, Suite 310w, Billings, MT 591017506
Phone: 4062386900
NPI Identifier 1689891806
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Dr. Alyssa Victoria Burkhart , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1740571991
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Dr. Tyajean Olive Campbell , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1233 N 30th St, Billings, MT 591010127
Phone: 4062373850
NPI Identifier 1871097238
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Dr. Gay J Canaris , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 N 29th St, Billings, MT 59101
Phone: 4062382500
NPI Identifier 1851358147
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Cadis Chase

Internal Medicine

Active NPI Status
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1750084125
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Dr. Renee Chen , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1952988503
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Dr. Cheryl S Cook , MD

Internal Medicine

Active NPI Status
2900 12th Ave N, Suite 265w, Billings, MT 591017506
Phone: 4062377999
NPI Identifier 1336181494
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Dr. Keith Davis , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 N 29th St, Billings, MT 591010905
Phone: 4062382250
NPI Identifier 1851738611
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Dr. Baskar S Duval , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1346289758
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Dr. Alden Dykstra , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2800 10th Ave N, Billings, MT 591010703
Phone: 4062382500
NPI Identifier 1427083757
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Dr. Dale W. Emery , MD

Internal Medicine

Active NPI Status
760 Wicks Ln, Billings, MT 591054427
Phone: 4062382575
NPI Identifier 1164533725
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Dr. Edward Amory Ferman , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2800 10th Ave N, Billings, MT 591010703
Phone: 4062382500
NPI Identifier 1366887176
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Dr. Amy Fishburn , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1233 N 30th St, Billings, MT 591010127
Phone: 4062373850
NPI Identifier 1578500716
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Dr. Colin B Fitterer , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2900 12th Ave N, Suite 310w, Billings, MT 591017506
Phone: 4062386900
NPI Identifier 1538424684
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Dr. Bradley Fuller , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2900 12th Ave N, Suite 310w, Billings, MT 591017506
Phone: 4062386900
NPI Identifier 1083652564
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Dr. Brian D. Fullerton , MD

Internal Medicine

Active NPI Status
2800 10th Ave N, Billings, MT 591010703
Phone: 4062382500
NPI Identifier 1063435949
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Dr. Steven J. Gerstner , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
NPI Identifier 1124130695
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Dr. Mark Richard Gobin , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2900 12th Ave N, Suite 160w, Billings, MT 591017506
Phone: 4106237850
NPI Identifier 1932140092
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Frequently Asked Questions about Internal Medicine in Billings

How do I check a Internal Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Montana licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.