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Internal Medicine Providers in Sioux City, IA

Browse 20 Internal Medicine providers listed in NPPES with a practice address in Sioux City, Iowa.

20 Healthcare Providers

How Sioux City compares with the U.S.

Sioux City has 23 clinicians in Internal Medicine per 100,000 residents, about 52% of the U.S. rate of 44.

That is 20 active clinicians in Internal Medicine with a practice address in Sioux City, for a population of 86,101.

The Iowa rate is 27 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 Sioux City listed in the CMS Medicare file (11 of 11) accept Medicare assignment. That is similar to the Iowa share of 98%.

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.

None of the 11 clinicians in Internal Medicine in Sioux City listed in the CMS Medicare file have a CMS telehealth indicator. Some may still offer telehealth; ask the office.

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 Sioux City, IA

Source: CMS PECOS
PECOS Enrolled Specialists 17 In Sioux City, IA
Part B Lab & Imaging Eligible 17 Diagnostic Referrals
DME Ordering Eligible 17 Durable Medical Equipment
Home Health Agency Referrals 17 HHA Ordering Eligible
Showing 1โ€“20 of 20 providers
With recent CMS data first, then Aโ€“Z

Dr. Peter Jon Anderson , MD

Internal Medicine

Active NPI Status
801 5th St, Sioux City, IA 511011326
Phone: 7122792010
NPI Identifier 1114967858
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Dr. Craig Wayne Bainbridge , MD

Internal Medicine

Active NPI Status
2730 Pierce St, Suite 401, Sioux City, IA 511043796
Phone: 7122558827
NPI Identifier 1689750150
View Full Profile

Dr. Jolynn A. Bugbee , MD

Internal Medicine

Active NPI Status
2720 Stone Park Blvd Ste 335, Sioux City, IA 511043734
Phone: 6059375537
NPI Identifier 1801858774
View Full Profile

Dr. Amy L. Callaghan , DO

Internal Medicine

Active NPI Status
624 Jones Street, Suite 5400, Sioux City, IA 511015283
Phone: 5152792510
NPI Identifier 1215924964
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Dr. Mark O. Carlson , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1605 Douglas St, Sioux City, IA 511051109
Phone: 7122341005
NPI Identifier 1609837368
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Dr. David H. Daniels , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
3520 Singing Hills Blvd, Sioux City, IA 511065110
Phone: 7122947400
NPI Identifier 1972558229
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Dr. Steven Patrick Feeney , MD

Internal Medicine

Active NPI Status
801 5th St, Sioux City, IA 511011326
Phone: 7122792010
NPI Identifier 1649208604
View Full Profile

Dr. Dale R Holdiman , MD

Internal Medicine

Active NPI Status
624 Jones St, Ste 5400, Sioux City, IA 511051924
Phone: 7122792510
NPI Identifier 1306894050
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Dr. David W Lucke , MD

Internal Medicine

Active NPI Status
624 Jones St, Ste 5400, Sioux City, IA 511051924
Phone: 7122792510
NPI Identifier 1457309197
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Dr. Neha Mehta , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 5th St, Sioux City, IA 511011326
Phone: 7122792010
NPI Identifier 1346774940
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Dr. Manju G Pillai , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 5th St, Sioux City, IA 511011326
Phone: 7122792514
NPI Identifier 1275843575
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Dr. Sandeep Pulimi , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 5th St, 801 Fifth Street, Sioux City, IA 511011326
Phone: 7122795999
NPI Identifier 1730429408
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Chakravarthi Pureti

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2720 Stone Park Blvd, Suite # 623, Sioux City, IA 511043734
Phone: 4028819115
NPI Identifier 1780809004
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Dr. Anukul Roy , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 5th St, Sioux City, IA 511011326
Phone: 6027783600
NPI Identifier 1568625796
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Dr. Shila Simkhada , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2720 Stone Park Blvd Ste 335, Sioux City, IA 511043734
Phone: 6059375537
NPI Identifier 1548834336
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Dr. Frederick Richard Stack , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 5th St, Sioux City, IA 511011326
Phone: 7122792010
NPI Identifier 1548256977
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Dr. Phani Keerthi Surapaneni , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2800 Pierce St Ste 414, Sioux City, IA 511043755
Phone: 7122206634
NPI Identifier 1356802201
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Dr. Jehad Zeidalkilani , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 5th St, Sioux City, IA 511011326
Phone: 7122792010
NPI Identifier 1356912950
View Full Profile

Dr. Robert Mark Stewart , MD

Internal Medicine

Active NPI Status
2730 Pierce St, Suite 401, Sioux City, IA 511043796
Phone: 7122558827
NPI Identifier 1124104609
View Full Profile

Dr. Rodrigo Torres , MD

Internal Medicine

Active NPI Status
801 5th St, Sioux City, IA 511011326
Phone: 7122792010
NPI Identifier 1952390189
View Full Profile

Frequently Asked Questions about Internal Medicine in Sioux City

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 Iowa 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.