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Internal Medicine Providers in New Berlin, WI

Browse 17 Internal Medicine providers listed in NPPES with a practice address in New Berlin, Wisconsin.

17 Healthcare Providers

How New Berlin compares with the U.S.

New Berlin has 42 clinicians in Internal Medicine per 100,000 residents, close to the U.S. rate of 44.

That is 17 active clinicians in Internal Medicine with a practice address in New Berlin, for a population of 40,270.

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.

100% of clinicians in Internal Medicine in New Berlin listed in the CMS Medicare file (13 of 13) accept Medicare assignment. That is higher than the Wisconsin share of 94%.

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.

38% of clinicians in Internal Medicine in New Berlin listed in the CMS Medicare file (5 of 13) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to 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 New Berlin, WI

Source: CMS PECOS
PECOS Enrolled Specialists 15 In New Berlin, WI
Part B Lab & Imaging Eligible 15 Diagnostic Referrals
DME Ordering Eligible 15 Durable Medical Equipment
Home Health Agency Referrals 15 HHA Ordering Eligible
Showing 1โ€“17 of 17 providers
With recent CMS data first, then Aโ€“Z

Dr. Richard D. Basile , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
14555 W National Ave, Suite 170, New Berlin, WI 531514494
Phone: 2628273636
NPI Identifier 1962495978
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Dr. Andrew J Catanzaro , MD

Internal Medicine

Active NPI Status
12901 W National Avenue, New Berlin, WI 53151
Phone: 2627827770
NPI Identifier 1003848243
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Dr. Steve I Chang , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
12555 W National Ave Ste 200, New Berlin, WI 53151
Phone: 2627542555
NPI Identifier 1295897569
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Dr. Stephen J. Desidero , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
14555 W National Ave, Suite 170, New Berlin, WI 531514494
Phone: 2628273636
NPI Identifier 1871586818
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Dr. Laura S Duncan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
14555 W National Ave, New Berlin, WI 531514494
Phone: 2628273636
NPI Identifier 1265464408
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Dr. Scott D. Fenske , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
14555 W National Ave, Suite 170, New Berlin, WI 531514494
Phone: 2628273636
NPI Identifier 1619960309
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Dr. Soo Ah Kim , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
14555 W National Ave, Suite 165, New Berlin, WI 531514494
Phone: 2628277074
NPI Identifier 1851529929
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Dr. Dennis P. Mannino , MD

Internal Medicine

Active NPI Status
14555 W National Ave, Suite 170, New Berlin, WI 531514494
Phone: 2628273636
NPI Identifier 1487647186
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Dr. Malaika Mathai , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
14555 W National Ave, Suite 170, New Berlin, WI 531514494
Phone: 2628273636
NPI Identifier 1386637080
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Dr. Beverly R. Ness , MD

Internal Medicine

Active NPI Status
14555 W National Ave, New Berlin, WI 531514494
Phone: 2628273636
NPI Identifier 1356375745
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Dr. Sirisha Paruchuri , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4805 S Moorland Rd, New Berlin, WI 531517401
Phone: 2627987200
NPI Identifier 1285865311
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Dr. Mohammed Mehdi Premjee , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
14555 W National Ave, New Berlin, WI 531514494
Phone: 2628272995
NPI Identifier 1548643778
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Dr. Maryam Shittu , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
3333 S Sunny Slope Rd Ste 108, New Berlin, WI 531514504
Phone: 2623179660
NPI Identifier 1689922882
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Dr. Christopher P Sobczak , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4805 S Moorland Rd, New Berlin, WI 53151
Phone: 2627987200
NPI Identifier 1770534265
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Dr. Roger Ven Torres , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
12555 W National Ave, #201, New Berlin, WI 531514061
Phone: 2627548005
NPI Identifier 1326091117
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Dr. Robert E Williams , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
14555 W National Ave, New Berlin, WI 531514494
Phone: 2628273636
NPI Identifier 1619909868
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Dr. Philip Wheatley , MD

Internal Medicine

Active NPI Status
2801 S Moorland Rd, New Berlin, WI 531512900
Phone: 2628607800
NPI Identifier 1962519827
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Frequently Asked Questions about Internal Medicine in New Berlin

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.