GREGORY M LEWIS M.D.
NPI 1104864321
Internal Medicine - Clinical Cardiac Electrophysiology in Hinsdale, IL

Active since June 02, 2006PECOS EnrolledAccepts Medicare Assignment
75/100
CMS Quality Rating
908 N ELM ST STE 404, HINSDALE, IL 60521(630) 789-3422 Get Directions Write a Review

NPPES record last updated: March 22, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Gregory M Lewis M.d. NPPES

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

GREGORY M LEWIS M.D. (NPI 1104864321) is an individual clinical cardiac electrophysiology provider in Hinsdale, Illinois, licensed in Illinois (036075101) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Adventist La Grange Memorial Hospital, and maintains a secondary practice location in Hinsdale.

NPPES Registry Identity

NPI1104864321
Entity TypeIndividualMale
Primary Taxonomy207RC0001X
Provider Legal NameGREGORY M LEWISCredential: M.D.
Location Address908 N ELM ST STE 404Hinsdale, IL 60521-3638
Mailing Address900 S Frontage Rd, Suite 325Woodridge, IL 60517-4903 · (630) 789-3422 · Fax (630) 789-9093
Sole ProprietorNo
Medical School CMSVanderbilt University School Of MedicineGraduated 1985
Enumeration DateJune 2, 2006
Last NPPES UpdateMarch 22, 2021
NPPES CertifiedMarch 22, 2021
NPI 1104864321 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 IL · 036075101
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 Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 036-075101 (IL)
908 N ELM ST STE 404, Hinsdale, IL 60521

Secondary Practice Location 1

Location 111 Salt Creek LnHinsdale, IL 60521-8601 · Phone (630) 789-3422 · Fax (630) 789-9093

Other Identifiers 3

OtherIL4174011IL · Medicare-locality 16
Other1912218850IL · Npi Group Practice
OtherIL4177011IL · Medicare-locality 15

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Gregory M Lewis 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 ID1850203589
PECOS Enrollment IDI20090609000637
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.

Areas of Expertise CMS Part B claims 32

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.

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.
889 services512 patients
Anticoagulant management of patient taking warfarin 93793
Anticoagulant management with warfarin involves monitoring and adjusting your medication to prevent blood clots while minimizing the risk of bleeding. Regular blood tests measure your response to warfarin, helping adjust your dose if necessary. It's crucial to maintain a consistent diet and promptly report any changes in your health.
407 services41 patients
Blood test, clotting time 85610
A clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.
260 services38 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.
245 services203 patients
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
244 services244 patients
Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days 93296
This procedure involves remotely monitoring your pacemaker or implantable defibrillator system. Over a 90-day period, we check the device's performance and your heart's activity. This helps ensure the device is functioning properly and providing the best possible support for your heart health.
220 services101 patients

Hospital Affiliations CMS Care Compare 4

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

Adventist La Grange Memorial Hospital

Acute Care Hospitals · La Grange, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140065
Location5101 S Willow Springs RdLa Grange, IL 60525 · Cook County
Emergency services

Adventist Hinsdale Hospital

Acute Care Hospitals · Hinsdale, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140122
Location120 North Oak StHinsdale, IL 60521 · Du Page County
Emergency services Birthing friendly

Uchicago Medicine Adventhealth Glenoaks

Acute Care Hospitals · Glendale Heights, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140292
Location701 Winthrop AvenueGlendale Heights, IL 60139 · Du Page County
Emergency services Birthing friendly

Uchicago Medicine Adventhealth Bolingbrook

Acute Care Hospitals · Bolingbrook, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140304
Location500 Remington BoulevardBolingbrook, IL 60440 · Will County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60521 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
$137.43 typical visit price
range $59.81 – $181.38
Typical copayment $34.35 (range $14.95 – $45.34)
Most-billed visit code 99204
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice

Other Providers at the Same Location NPPES 19

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

Internal Medicine (Interventional Cardiology)
908 N ELM ST STE 404
HINSDALE, IL 60521
Internal Medicine (Cardiovascular Disease)
908 N ELM ST STE 404
HINSDALE, IL 60521
Internal Medicine (Cardiovascular Disease)
908 N ELM ST STE 404
HINSDALE, IL 60521
Nurse Practitioner (Family)
908 N ELM ST STE 404
HINSDALE, IL 60521
Nurse Practitioner (Family)
908 N ELM ST STE 404
HINSDALE, IL 60521
Internal Medicine (Clinical Cardiac Electrophysiology)
908 N ELM ST STE 404
HINSDALE, IL 60521
Internal Medicine (Cardiovascular Disease)
908 N ELM ST STE 404
HINSDALE, IL 60521
Internal Medicine (Cardiovascular Disease)
908 N ELM ST STE 404
HINSDALE, IL 60521

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 Gregory Lewis's NPI number?

The NPI number for Gregory Lewis is 1104864321. It was assigned to this individual provider in the NPPES registry on June 2, 2006.

Where is Gregory Lewis located?

Gregory Lewis practices at 908 N Elm St Ste 404, Hinsdale, IL 60521. The listed phone number is (630) 789-3422.

What is Gregory Lewis's specialty?

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

Is Gregory Lewis enrolled in Medicare?

Yes. Gregory Lewis 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.

What insurance does Gregory Lewis accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Gregory Lewis 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 Gregory Lewis affiliated with any hospitals?

According to CMS data, Gregory Lewis is affiliated with Adventist La Grange Memorial Hospital, Adventist Hinsdale Hospital, Uchicago Medicine Adventhealth Glenoaks and Uchicago Medicine Adventhealth Bolingbrook.

When was this NPI record last updated?

The NPPES record for Gregory Lewis was last updated on March 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.