DR. STEPHEN GEORGE KEIM M.D.
NPI 1821080029
Internal Medicine - Clinical Cardiac Electrophysiology in Salisbury, MD

Q: What is Stephen Keim's NPI number?

The NPI number for Stephen Keim is 1821080029. It was assigned to this individual provider in the NPPES registry on August 16, 2005.

Q: What is Stephen Keim'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 Stephen Keim was last updated on September 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 August 16, 2005PECOS EnrolledAccepts Medicare Assignment

106 MILFORD ST, SUITE 605, SALISBURY, MD 21804(410) 334-2224(410) 334-3962 Get Directions Write a Review

NPPES record last updated: September 3, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Stephen George Keim M.d. NPPES

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

DR. STEPHEN GEORGE KEIM M.D. (NPI 1821080029) is an individual clinical cardiac electrophysiology provider in Salisbury, Maryland, licensed in Maryland (D0032212) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Shands Jacksonville, and is a graduate of Washington University School Of Medicine (1982).

NPPES Registry Identity

NPI1821080029

Entity TypeIndividualMale

Primary Taxonomy207RC0001X

Provider Legal NameDR. STEPHEN GEORGE KEIMCredential: M.D.

Location Address106 MILFORD ST, SUITE 605Salisbury, MD 21804-6953

Mailing Address100 E Carroll StSalisbury, MD 21801-5422 · (410) 546-6400

Phone(410) 334-2224

Fax(410) 334-3962

Sole ProprietorNo

Medical School CMSWashington University School Of MedicineGraduated 1982

Enumeration DateAugust 16, 2005

Last NPPES UpdateSeptember 3, 2019

✔ NPI 1821080029 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RC0001X

License✔ Licensed in MD · D0032212

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 ListedSpecialistTaxonomy 174400000X · License D0032212 (MD)

106 MILFORD ST, Salisbury, MD 21804

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Superior HealthPlan, Ambetter Health, Ambetter of Alabama 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

Dr. Stephen George Keim M.d. 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 ID1052394582

PECOS Enrollment IDI20060227000377

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 Stephen Keim reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Tidalhealth Peninsula Regional, Inc.

1.7 mi

Family Medicine

100 E CARROLL ST, PENINSULA REGIONAL MEDICAL GROUP
Salisbury, MD 21801

Reassigned Medicare billing, Maryland enrollment
169 clinicians in this Medicare group

NPI 1184832040 (410) 543-7252

Tidalhealth Specialty Care, LLC

1.7 mi

Medical Specialty

100 E CARROLL ST
Salisbury, MD 21801

Reassigned Medicare billing, Delaware and Maryland enrollments
58 clinicians in this Medicare group

NPI 1619504735 (410) 546-6400

Tidalhealth Physician Network, Inc.

21 mi

Family Medicine

801 MIDDLEFORD RD
Seaford, DE 19973

Reassigned Medicare billing, Delaware enrollment
179 clinicians in this Medicare group

NPI 1467534636 (302) 629-5217

University Of Florida Jacksonville Physicians Inc

650 mi

Pulmonary Disease

655 W 8TH ST, UFJP PULMONARY
Jacksonville, FL 32209

Reassigned Medicare billing, Florida enrollment
1,456 clinicians in this Medicare group

NPI 1104086479 (904) 244-3660

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 34

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.

3,851 services2,001 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294

This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.

595 services280 patients

Evaluation of cardiac rhythm monitor system, remote up to 30 days 93298

This procedure involves remotely monitoring your heart rhythm for up to 30 days. A small device will record your heart's activity, which can be accessed by your healthcare team. This aids in diagnosing any irregularities or issues with your heart function.

471 services88 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

416 services373 patients

Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days 93295

This procedure involves remotely monitoring your implantable defibrillator system, which can have single, dual, or multiple leads. Over a period of up to 90 days, the system's performance is evaluated to ensure it's working properly and providing the necessary heart rhythm support.

333 services161 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.

134 services131 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

109 services95 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

100 services98 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

90 services78 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

72 services36 patients

Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional 93228

An Electrocardiogram (ECG) is a non-invasive test that records the electrical signals in your heart. For up to 30 days, a small device will continuously monitor your heart's activity. A healthcare professional will then review the data and provide a report on your heart's function.

58 services58 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

55 services48 patients

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

50 services50 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.

46 services46 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

44 services40 patients

Programming of dual lead implantable defibrillator system 93283

Programming of a dual lead implantable defibrillator system involves adjusting settings on a device implanted in your chest. This device monitors your heart rhythm and delivers electrical pulses to correct irregular heartbeats, helping maintain a healthy heart rhythm.

43 services36 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.

41 services33 patients

Programming of multiple lead implantable defibrillator system 93284

Programming of a multiple lead implantable defibrillator system involves adjusting settings on your implanted device to help control irregular heart rhythms. The process is non-invasive and helps ensure optimal device performance for maintaining heart health.

40 services26 patients

Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional 93228

34 services34 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.

33 services31 patients

Heart rhythm recording continous external ekg over more than 48 hours up to 7 days 93242

This procedure involves wearing a device, an external EKG, for up to 7 days to continuously monitor your heart rhythm. It helps detect irregularities that may not occur during a standard EKG. The device is non-invasive and safe.

33 services33 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

28 services26 patients

Insertion of pacemaker and upper and lower heart chamber electrode 33208

A pacemaker insertion is a procedure where a small device, called a pacemaker, is implanted under your skin. This device uses electrical pulses to prompt the heart to beat at a normal rate. Electrodes are placed in the upper and lower chambers of your heart to help regulate your heartbeat.

20 services20 patients

Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation 93656

This is a procedure to treat atrial fibrillation, a condition causing irregular heartbeats. It involves a detailed heart evaluation using electrophysiology. A catheter is then used to destroy the problematic area causing the issue. Specifically, isolation of the pulmonary vein is done to regulate the heartbeat.

19 services19 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

18 services18 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.

17 services17 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

17 services17 patients

Insertion of heart rhythm monitor under skin 33285

The insertion of a heart rhythm monitor under the skin is a procedure to track your heart's activity. A small device is placed under your skin, recording your heart's rhythms continuously. This helps identify irregular heartbeats or conditions, aiding in your treatment.

14 services14 patients

Programming of multiple lead pacemaker system 93281

Programming of a multiple lead pacemaker system involves adjusting settings on your pacemaker device to optimize its function. This device uses electrical impulses to regulate your heart's rhythm. The procedure ensures it's working effectively for your specific needs.

14 services13 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

14 services14 patients

Electrocardiogram (ecg) 2-day continuous 93225

An Electrocardiogram (ECG) 2-day continuous is a non-invasive test that records the electrical activity of your heart over 48 hours. It helps to detect irregular heart rhythms, heart disease, or other cardiac conditions. You wear a portable device that records heart activity as you go about your daily activities.

13 services13 patients

Programming of single lead pacemaker system 93279

Programming of a single lead pacemaker system involves adjusting the pacemaker's settings to suit your heart's unique needs. This is done using a special device that communicates with the pacemaker, ensuring it helps your heart beat at an optimal rate.

12 services12 patients

Programming of single lead implantable defibrillator system 93282

Programming of a single lead implantable defibrillator system involves setting up and adjusting a device implanted in your body. This device helps regulate your heartbeat. It can detect irregular heart rhythms and provide corrective electric shocks to restore a normal heartbeat.

12 services12 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Shands Jacksonville

Acute Care Hospitals · Jacksonville, FL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number100001

Location655 W 8th StJacksonville, FL 32209 · Duval County

Emergency services Birthing friendly

Southeast Georgia Health System- Brunswick Campus

Acute Care Hospitals · Brunswick, GA

1/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110025

Location2415 Parkwood DriveBrunswick, GA 31520 · Glynn County

Emergency services

Southeast Georgia Health System -- Camden Campus

Acute Care Hospitals · Saint Marys, GA

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110146

Location2000 Dan Proctor DriveSaint Marys, GA 31558 · Camden County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21804 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

$133.05 typical visit price

range $57.99 – $175.57

Typical copayment $33.26 (range $14.49 – $43.89)

Most-billed visit code 99204

Established Patient

$102.11 typical visit price

range $18.66 – $143.02

Typical copayment $25.52 (range $4.66 – $35.75)

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.

MYRNA KAY LEHNER C.P.N.P.

Nurse Practitioner

106 MILFORD ST, STE 201
SALISBURY, MD 21804

Wicomico County (410) 543-1952

DR. JAMES JOSEPH KLOCEK D.P.M.

Podiatrist

106 MILFORD ST, SUITE 504-A
SALISBURY, MD 21804

Wicomico County (410) 546-2288

SALISBURY FOOT & ANKLE CENTER PA

Podiatrist

106 MILFORD ST, STE 403
SALISBURY, MD 21804

Wicomico County (410) 749-6363

AMY D. WALSH, M.D.

Clinic/Center (Primary Care)

106 MILFORD ST, SUITE 306
SALISBURY, MD 21804

Wicomico County (410) 677-6500

TIDALHEALTH SPECIALTY CARE, LLC

Internal Medicine (Cardiovascular Disease)

106 MILFORD ST
SALISBURY, MD 21804

Wicomico County (410) 334-2227

DR. MARK DAVID WALSH M.D.

Psychiatry & Neurology (Psychiatry)

106 MILFORD ST, SUITE 306
SALISBURY, MD 21804

Wicomico County (410) 677-6500

MRS. ELIZABETH THOMAS GUY MSN, CRNP

Nurse Practitioner (Family)

106 MILFORD ST, SUITE 605
SALISBURY, MD 21804

Wicomico County (410) 334-2227

DR. JEFFREY HOWARD ETHERTON M.D.

Internal Medicine (Interventional Cardiology)

106 MILFORD ST, SUITE 605
SALISBURY, MD 21804

Wicomico County (410) 334-2227

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 Stephen Keim's NPI number?

The NPI number for Stephen Keim is 1821080029. It was assigned to this individual provider in the NPPES registry on August 16, 2005.

Where is Stephen Keim located?

Stephen Keim practices at 106 Milford St Suite 605, Salisbury, MD 21804. The listed phone number is (410) 334-2224.

What is Stephen Keim's specialty?

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

Is Stephen Keim enrolled in Medicare?

Yes. Stephen Keim is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Stephen Keim's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Keim reassigns Medicare benefits to 4 organizations: Tidalhealth Peninsula Regional, Inc. (Salisbury, MD), Tidalhealth Specialty Care, LLC (Salisbury, MD), Tidalhealth Physician Network, Inc. (Seaford, DE) and University Of Florida Jacksonville Physicians Inc (Jacksonville, FL). 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 Stephen Keim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Stephen Keim accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Ambetter of Alabama, AmeriHealth Caritas Next and AvMed and 3 other insurers list Stephen Keim 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.

Is Stephen Keim affiliated with any hospitals?

According to CMS data, Stephen Keim is affiliated with Shands Jacksonville, Southeast Georgia Health System- Brunswick Campus and Southeast Georgia Health System -- Camden Campus.

When was this NPI record last updated?

The NPPES record for Stephen Keim was last updated on September 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.