DR. SAMUEL LEWIS JOHNSTON M.D.
NPI 1184832271
Internal Medicine - Clinical Cardiac Electrophysiology in Iowa City, IA

Q: What is Samuel Johnston's NPI number?

The NPI number for Samuel Johnston is 1184832271. It was assigned to this individual provider in the NPPES registry on May 20, 2007.

Q: What is Samuel Johnston's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Q: When was this NPI record last updated?

The NPPES record for Samuel Johnston was last updated on December 12, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years 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 May 20, 2007PECOS Enrolled

200 HAWKINS DR, E315GH, IOWA CITY, IA 52242(319) 356-3689 Get Directions Write a Review

NPPES record last updated: December 12, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 12, 2016, Mar 16, 2016 (2 updates tracked since 2016).

On this page

About Dr. Samuel Lewis Johnston M.d. NPPES

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

DR. SAMUEL LEWIS JOHNSTON M.D. (NPI 1184832271) is an individual clinical cardiac electrophysiology provider in Iowa City, Iowa, licensed in Iowa (MD-42224) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184832271

Entity TypeIndividualMale

Primary Taxonomy207RC0001X

Provider Legal NameDR. SAMUEL LEWIS JOHNSTONCredential: M.D.

Location Address200 HAWKINS DR, E315GHIowa City, IA 52242-1009

Mailing Address200 Hawkins Dr, E315ghIowa City, IA 52242-1009 · (319) 356-3689

Phone(319) 356-3689

Sole ProprietorNo

Enumeration DateMay 20, 2007

Last NPPES UpdateDecember 12, 20162 updates tracked since enumeration

✔ NPI 1184832271 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RC0001X

Licenses✔ Licensed in IA · MD-42224✔ Licensed in OR · MD153947✔ Licensed in IL · 036114065

Definition

A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.

Also ListedInternal MedicineTaxonomy 207R00000X · License MD153947 (OR), 036-114065 (IL)

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License MD-4224 (IA), MD153947 (OR), 036-114065 (IL)

200 HAWKINS DR, Iowa City, IA 52242

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Other Identifiers 5

OtherCA4748IL · Medicare Railroad (group Ptan)

OtherP01209465IL · Medicare Railroad (provider Ptan)

Medicaid036114065IL

Other206147126IL · Medicare Ptan (individual)

Other206147IL · Medicare Ptan (group)

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company, PacificSource Health Plans, Sanford Health Plan 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 (PECOS)

Dr. Samuel Lewis Johnston M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignments

Medicare enrollment records show Samuel Johnston reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

State University Of Iowa

Same address

Dentist

200 HAWKINS DRIVE, 51300 POMERANTZ FAMILY PAVILION
Iowa City, IA 52242

Reassigned Medicare billing, Iowa enrollment
2,190 clinicians in this Medicare group

NPI 1114905387 (319) 356-2743

Cgh Medical Center

96 mi

General Acute Care Hospital

100 E LE FEVRE RD
Sterling, IL 61081

Reassigned Medicare billing, Illinois enrollment
356 clinicians in this Medicare group

NPI 1902854623 (815) 625-0400

Morris Hospital

163 mi

General Practice

150 W HIGH ST
Morris, IL 60450

Reassigned Medicare billing, Illinois enrollment
207 clinicians in this Medicare group

NPI 1558466268 (815) 942-2932

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 7

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

185 services167 patients

Electrocardiogram (ecg) 2-day continuous with review by health care professional 93227

An Electrocardiogram (ECG) is a test that checks your heart's activity. The 2-day continuous ECG records your heart's rhythm non-stop for 48 hours. It helps to detect irregularities that may not occur during a shorter test. A healthcare professional will review the results to identify any issues.

49 services49 patients

Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional 93272

An Electrocardiogram (ECG) is a test that records the electrical activity of your heart. For up to 30 days, a device will continuously monitor your heart's rhythm, noting any symptoms. The data is sent to a healthcare professional who reviews it and provides a report on your heart health.

34 services34 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

33 services32 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

21 services21 patients

External shock to heart to regulate heart beat 92960

This procedure, known as cardioversion, uses an external electrical shock to restore your heart's normal rhythm. It's typically performed when irregular heartbeats, or arrhythmias, are causing severe symptoms and aren't responding to medications.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 52242 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

$122.23 typical visit price

range $52.96 – $161.40

Typical copayment $30.55 (range $13.24 – $40.35)

Most-billed visit code 99204

Established Patient

$94.05 typical visit price

range $16.91 – $131.98

Typical copayment $23.51 (range $4.22 – $32.99)

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.

Other Providers at the Same Location NPPES 20

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

SANGIL LEE M.D.

Emergency Medicine

200 HAWKINS DR
IOWA CITY, IA 52242

Johnson County (319) 356-2233

RAMI G. EL ABIAD M.D.

Internal Medicine (Gastroenterology)

200 HAWKINS DR
IOWA CITY, IA 52242

Johnson County (319) 356-4901

GRERK SUTAMTEWAGUL MD

Internal Medicine (Hematology & Oncology)

200 HAWKINS DR, DEPT OF INTERNAL MEDICINE
IOWA CITY, IA 52242

Johnson County (319) 356-1616

DR. KALEB TANNER VEIT D.O.

Internal Medicine (Critical Care Medicine)

200 HAWKINS DR
IOWA CITY, IA 52242

Johnson County (319) 356-2320

OMAR JABER M.D

Chronic Disease Hospital

200 HAWKINS DR
IOWA CITY, IA 52242

Johnson County (319) 471-8958

JENNIFER MANCUSO MS, CGC

Genetic Counselor, MS

200 HAWKINS DR, 31663 PFP
IOWA CITY, IA 52242

Johnson County (319) 384-7983

ASHLEY KAISER M.D.

Obstetrics & Gynecology

200 HAWKINS DR, DEPT OF OBGYN
IOWA CITY, IA 52242

Johnson County (319) 356-2294

MRS. NANCY JANE MILLICE

Health Educator

200 HAWKINS DR, 0733 JPP
IOWA CITY, IA 52242

Johnson County (319) 356-3825

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Samuel Johnston's NPI number?

The NPI number for Samuel Johnston is 1184832271. It was assigned to this individual provider in the NPPES registry on May 20, 2007.

Where is Samuel Johnston located?

Samuel Johnston practices at 200 Hawkins Dr E315gh, Iowa City, IA 52242. The listed phone number is (319) 356-3689.

What is Samuel Johnston's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is Samuel Johnston enrolled in Medicare?

Yes. Samuel Johnston is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Samuel Johnston's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Samuel Johnston reassigns Medicare benefits to 3 organizations: State University Of Iowa (Iowa City, IA), Cgh Medical Center (Sterling, IL) and Morris Hospital (Morris, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Samuel Johnston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Samuel Johnston accept?

Health plans from Oscar Insurance Company, PacificSource Health Plans, Sanford Health Plan and Wellmark Health Plan of Iowa, Inc. list Samuel Johnston as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Samuel Johnston was last updated on December 12, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years 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.