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Internal Medicine Providers in Muskegon, MI

Browse 47 Internal Medicine providers listed in NPPES with a practice address in Muskegon, Michigan.

47 Healthcare Providers

How Muskegon compares with the U.S.

Muskegon has 126 clinicians in Internal Medicine per 100,000 residents, 2.8 times the U.S. rate of 44.

That is 47 active clinicians in Internal Medicine with a practice address in Muskegon, for a population of 37,226.

The Michigan rate is 57 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.

93% of clinicians in Internal Medicine in Muskegon listed in the CMS Medicare file (27 of 29) accept Medicare assignment. That is similar to the Michigan 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.

17% of clinicians in Internal Medicine in Muskegon listed in the CMS Medicare file (5 of 29) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the Michigan share of 31%.

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 Muskegon, MI

Source: CMS PECOS
PECOS Enrolled Specialists 30 In Muskegon, MI
Part B Lab & Imaging Eligible 33 Diagnostic Referrals
DME Ordering Eligible 33 Durable Medical Equipment
Home Health Agency Referrals 33 HHA Ordering Eligible
Showing 1โ€“20 of 47 providers
With recent CMS data first, then Aโ€“Z

Dr. Michael V Bergquist , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1150 E Sherman Blvd Ste 1100, Muskegon, MI 494444607
Phone: 2316722203
NPI Identifier 1174570303
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Active NPI Status Accepts Medicare Assignment
1675 Leahy St Ste 201a, Muskegon, MI 494425542
Phone: 2316727800
NPI Identifier 1073008017
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Dr. Nancy F Brenneman , MD

Internal Medicine

Active NPI Status
1700 Clinton St, Muskegon, MI 494425502
Phone: 2317275211
NPI Identifier 1316925993
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Dr. Wayne L Brenneman , MD

Internal Medicine

Active NPI Status
1500 E Sherman Blvd, Muskegon, MI 494441849
Phone: 2317275211
NPI Identifier 1346228913
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Dr. Syed Bukhari , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1150 E Sherman Blvd Ste 1100, Muskegon, MI 494444607
Phone: 2316727800
NPI Identifier 1437738580
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Dr. Don Campbell , MD

Internal Medicine

Active NPI Status
1150 E Sherman Blvd, Suite 1100, Muskegon, MI 494441871
Phone: 2316722203
NPI Identifier 1184601957
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Dr. Ronald Craig Chusid , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1762 Oak Ave, Muskegon, MI 494422407
Phone: 2317733258
NPI Identifier 1841379260
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Dr. Amy L Dean , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1150 E Sherman Blvd Ste 2400, Muskegon, MI 494441886
Phone: 2316726336
NPI Identifier 1982615357
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Dr. Peyton Paul Faganel , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1675 Leahy St Ste 201a, Muskegon, MI 49442
Phone: 2316727800
NPI Identifier 1104311604
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Dr. Julie Jeanette Felt , MD, MMM

Internal Medicine

Active NPI Status
1675 Leahy St, Suite 201a, Muskegon, MI 494425500
Phone: 2316727800
NPI Identifier 1497940571
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Dr. Branden M Goller , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1500 E Sherman Blvd, Muskegon, MI 494441849
Phone: 2316722400
NPI Identifier 1982287256
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Dr. James Grace , MD

Internal Medicine

Active NPI Status
1150 E Sherman Blvd Ste 1100, Muskegon, MI 494444607
Phone: 2316722203
NPI Identifier 1215914023
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Dr. Hikmat Surafin Halasa , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1560 E Sherman Blvd, Suite 215, Muskegon, MI 49444
Phone: 2318308600
NPI Identifier 1386735447
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Dr. David Ryan Heger , DO, PharmD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1500 E Sherman Blvd, Muskegon, MI 494441849
Phone: 2316723883
NPI Identifier 1225200165
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Dr. Gregory Allan Holton , MD

Internal Medicine

Active NPI Status
1675 Leahy St Ste 201a, Muskegon, MI 494425542
Phone: 2316727800
NPI Identifier 1194136556
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Dr. William Patrick Hughes , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1500 E Sherman Blvd, Muskegon, MI 494441849
Phone: 2316723883
NPI Identifier 1770856676
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Dr. Tyson Jay Lahti , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2558 Henry St, Muskegon, MI 494413024
Phone: 2312918150
NPI Identifier 1477814846
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Dr. Hernan Luis Lescay , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2558 Henry St, Muskegon, MI 494413024
Phone: 2312918150
NPI Identifier 1154322477
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Dr. Pedro Julio Mejia Garagorry , MD

Internal Medicine

Active NPI Status
1700 Oak Ave, Muskegon, MI 494422407
Phone: 2317274444
NPI Identifier 1497919286
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Dr. Mary G Mezher , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1500 E Sherman Blvd, Muskegon, MI 494441849
Phone: 2316723883
NPI Identifier 1124686365
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Frequently Asked Questions about Internal Medicine in Muskegon

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 Michigan 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.