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Internal Medicine Providers in Mequon, WI

Browse 25 Internal Medicine providers listed in NPPES with a practice address in Mequon, Wisconsin.

25 Healthcare Providers

How Mequon compares with the U.S.

Mequon has 99 clinicians in Internal Medicine per 100,000 residents, 2.2 times the U.S. rate of 44.

That is 25 active clinicians in Internal Medicine with a practice address in Mequon, for a population of 25,270.

The Wisconsin rate is 35 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.

100% of clinicians in Internal Medicine in Mequon listed in the CMS Medicare file (11 of 11) accept Medicare assignment. That is higher than the Wisconsin share of 94%.

Only 11 of 25 active clinicians in Internal Medicine in Mequon appear in the CMS Medicare file, so this share describes that smaller group.

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.

45% of clinicians in Internal Medicine in Mequon listed in the CMS Medicare file (5 of 11) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Wisconsin share of 35%.

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 Mequon, WI

Source: CMS PECOS
PECOS Enrolled Specialists 13 In Mequon, WI
Part B Lab & Imaging Eligible 15 Diagnostic Referrals
DME Ordering Eligible 16 Durable Medical Equipment
Home Health Agency Referrals 15 HHA Ordering Eligible
Showing 1โ€“20 of 25 providers
With recent CMS data first, then Aโ€“Z

Dr. Maria Beg , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
11430 N Port Washington Rd, Mequon, WI 530923414
Phone: 2625181900
NPI Identifier 1992974703
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Dr. Deidre L Faust , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
13133 N Port Washington Road, Suite G18, Mequon, WI 530972420
Phone: 2622435000
NPI Identifier 1154372092
View Full Profile

Dr. David F Goldberg , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
13133 N Port Washington Rd Ste G-18, Mequon, WI 530972420
Phone: 2622435000
NPI Identifier 1285792127
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Dr. Kevin Goniu , MD

Internal Medicine

Active NPI Status
11430 N Port Washington Rd, Mequon, WI 530923414
Phone: 2625181900
NPI Identifier 1710910708
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Dr. Scott A Jorgensen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
13133 N Port Washington Rd, Suite G18, Mequon, WI 530972419
Phone: 2622435000
NPI Identifier 1184654725
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Dr. Madhumathi Kosaraju , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7020 W Creekside Ct, Mequon, WI 530924372
Phone: 3125327522
NPI Identifier 1770574824
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Dr. Lynne D Langlois , DO

Internal Medicine

Active NPI Status
2114 W Columbia Dr, Mequon, WI 530925645
Phone: 4143248287
NPI Identifier 1265499198
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Dr. David P Lucke , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
13133 N Port Washington Rd, Suite G18, Mequon, WI 530972419
Phone: 2622435000
NPI Identifier 1477580686
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Dr. Norine T. Nazareth , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
12203 Corporate Pkwy, Mequon, WI 530923388
Phone: 2623878200
NPI Identifier 1104856244
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Dr. Rachel Oosterbaan-Panarese , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
13133 N Port Washington Rd, Suite G-18, Mequon, WI 530972419
Phone: 2622435000
NPI Identifier 1588690986
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Dr. Colleen M Poggenburg , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1251 W Glen Oaks Ln, Mequon, WI 530923356
Phone: 4142906720
NPI Identifier 1558306407
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Dr. John George Sanidas , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
13133 N Port Washington Rd, Suite G-18, Mequon, WI 530972419
Phone: 2622435000
NPI Identifier 1356388359
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Dr. Bozena Simon , MD

Internal Medicine

Active NPI Status
11203 N Buntrock Ave, Mequon, WI 530921857
Phone: 2622388988
NPI Identifier 1437249125
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Dr. Margaret M Spoerl , MD

Internal Medicine

Active NPI Status
12203 N Corporate Pkwy, Mequon, WI 53092
Phone: 2623878200
NPI Identifier 1871511519
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Dr. Enid A Trotman , MD

Internal Medicine

Active NPI Status
14195 N Twin Oaks Ln, Mequon, WI 530971309
Phone: 4143054954
NPI Identifier 1174602619
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Dr. Rupika Uberoi-Nangia , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
12203 Corporate Pkwy, Mequon, WI 530923388
Phone: 2623878200
NPI Identifier 1427165539
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Dr. Michael J Unger , MD

Internal Medicine

Active NPI Status
1251 W Glen Oaks Ln, Mequon, WI 530923356
Phone: 4142906720
NPI Identifier 1568485753
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Dr. Ruchira Varshney , DO

Internal Medicine

Active NPI Status
10335 North Port Washington Rd., Suite 180, Mequon, WI 53092
Phone: 3129651747
NPI Identifier 1174654842
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Dr. Marsha Fleming Davis , MD

Internal Medicine

Active NPI Status
1516 W Mequon Rd, Suite 103, Mequon, WI 530923264
Phone: 2622420700
NPI Identifier 1063451235
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Dr. Lewis M. Feiges , MD

Internal Medicine

Active NPI Status
10009 N. Franklin Ct., Mequon, WI 53092
Phone: 2626434490
NPI Identifier 1376819508
View Full Profile

Frequently Asked Questions about Internal Medicine in Mequon

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 Wisconsin 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.

Other Specialties in Mequon

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