JEFFREY PATRICK MICHALAK DO
NPI 1962622431
Internal Medicine - Gastroenterology in Dakota Dunes, SD

Q: What is Jeffrey Michalak's NPI number?

The NPI number for Jeffrey Michalak is 1962622431. It was assigned to this individual provider in the NPPES registry on April 26, 2007.

Q: What is Jeffrey Michalak's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Jeffrey Michalak was last updated on December 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 26, 2007PECOS EnrolledAccepts Medicare Assignment

575 N SIOUX POINT ROAD, DAKOTA DUNES, SD 57049(605) 217-2667(605) 217-2900 Get Directions Write a Review

NPPES record last updated: December 10, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Jeffrey Patrick Michalak Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JEFFREY PATRICK MICHALAK DO (NPI 1962622431) is an individual gastroenterology provider in Dakota Dunes, South Dakota, licensed in South Dakota (8388) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with St Lukes Regional Medical Center, and maintains a secondary practice location in Dakota Dunes.

NPPES Registry Identity

NPI1962622431

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameJEFFREY PATRICK MICHALAKCredential: DO

Location Address575 N SIOUX POINT ROADDakota Dunes, SD 57049-5312

Mailing Address575 N Sioux Point RoadDakota Dunes, SD 57049-5312 · (605) 217-2667 · Fax (605) 217-2900

Phone(605) 217-2667

Fax(605) 217-2900

Sole ProprietorNo

Medical School CMSKansas City University Of Med & Biosciences, College Of Osteo MedGraduated 2005

Enumeration DateApril 26, 2007

Last NPPES UpdateDecember 10, 2025

NPPES CertifiedDecember 10, 2025

✔ NPI 1962622431 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

Licenses✔ Licensed in SD · 8388✔ Licensed in NE · 933✔ Licensed in IA · DO-04307

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

575 N SIOUX POINT ROAD, Dakota Dunes, SD 57049

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Secondary Practice Location 1

Location 1705 N Sioux Point Rd, Suite 100Dakota Dunes, SD 57049-5091 · Phone (605) 217-5500 · Fax (605) 217-5515

Other Identifiers 3

Medicaid1962622431NH

Medicaid1962622431IA

Medicaid1962622431SD

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Sunflower Health Plan, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Jeffrey Patrick Michalak Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7911071535

PECOS Enrollment IDI20120724000566, I20120725001029, I20221110000457

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Jeffrey Michalak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cnos PC

Same address

Orthopaedic Surgery

575 N SIOUX POINT RD
Dakota Dunes, SD 57049

Reassigned Medicare billing, Iowa, Nebraska and South Dakota enrollments
79 clinicians in this Medicare group

NPI 1881604320 (605) 217-2667

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

282 services265 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

227 services167 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

214 services213 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

153 services151 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

107 services107 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

48 services48 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St Lukes Regional Medical Center

Acute Care Hospitals · Sioux City, IA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number160146

Location2720 Stone Park BoulevardSioux City, IA 51104 · Woodbury County

Emergency services Birthing friendly

Burgess Health Center

Critical Access Hospitals · Onawa, IA

OwnershipVoluntary non-profit - Private

CMS Certification Number161359

Location1600 Diamond StreetOnawa, IA 51040 · Monona County

Emergency services

Floyd Valley Healthcare

Critical Access Hospitals · Le Mars, IA

OwnershipGovernment - Local

CMS Certification Number161368

Location714 Lincoln St NELe Mars, IA 51031 · Plymouth County

Emergency services Birthing friendly

Buena Vista Regional Medical Center

Critical Access Hospitals · Storm Lake, IA

4/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number161375

Location1525 West 5th StreetStorm Lake, IA 50588 · Buena Vista County

Emergency services

Dunes Surgical Hospital

Acute Care Hospitals · Dakota Dunes, SD

OwnershipProprietary

CMS Certification Number430089

Location600 N Sioux Point RoadDakota Dunes, SD 57049 · Union County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 57049 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$126.78 typical visit price

range $55.52 – $167.23

Typical copayment $31.69 (range $13.88 – $41.80)

Most-billed visit code 99204

Established Patient

$97.88 typical visit price

range $18.08 – $137.08

Typical copayment $24.47 (range $4.52 – $34.27)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Neuromuscular stimulator, electronic shock unit E0745

DME-Other DME · category DE000N

1 supplier12 claims12 services$57.74 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CRAIG ROBERT NEMECHEK MD

Surgery