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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JACK LEYA MD
NPI 1336128602
Internal Medicine - Gastroenterology in Maywood, IL

Active since January 13, 2006PECOS EnrolledAccepts Medicare Assignment
82.57/100
CMS Quality Rating
2160 S FIRST AVE, (FAHEY BLDG., RM. 007), MAYWOOD, IL 60153(708) 216-3307(708) 216-4113 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 9, 2026, Oct 10, 2023 (2 updates tracked since 2023).

About Jack Leya Md NPPES

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

JACK LEYA MD (NPI 1336128602) is an individual gastroenterology provider in Maywood, Illinois, licensed in Illinois (036066173) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Fhn Memorial Hospital, and is a graduate of Other (1981).

NPPES Registry Identity

NPI1336128602
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameJACK LEYACredential: MD
Location Address2160 S FIRST AVE, (FAHEY BLDG., RM. 007)Maywood, IL 60153
Mailing Address2160 S 1st AveMaywood, IL 60153-3328 · (708) 216-3307 · Fax (708) 216-4113
Phone(708) 216-3307
Fax(708) 216-4113
Sole ProprietorNo
Medical School CMSOtherGraduated 1981
Enumeration DateJanuary 13, 2006
Last NPPES UpdateJuly 9, 20262 updates tracked since enumeration
NPPES CertifiedJuly 9, 2026
✔ NPI 1336128602 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in IL · 036066173
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License 036066173 (IL)
2160 S FIRST AVE, Maywood, IL 60153
Open in Google Maps ↗

Other Identifiers 1

Medicaid36066173IL

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

Jack Leya Md 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 ID3870522493
PECOS Enrollment IDI20050804000377
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 6

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.

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.
40 services40 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
35 services24 patients
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito G0500
Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.
33 services33 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.
30 services30 patients
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.
22 services22 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.
14 services14 patients

Hospital Affiliations CMS Care Compare 2

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

Fhn Memorial Hospital

Acute Care Hospitals · Freeport, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140160
Location1045 West Stephenson StreetFreeport, IL 61032 · Stephenson County
Emergency services Birthing friendly

Loyola University Medical Center

Acute Care Hospitals · Maywood, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140276
Location2160 S 1st AvenueMaywood, IL 60153 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60153 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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.

82.57/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality87.59
Promoting Interoperability92
Improvement Activities40
Cost58.04

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.

RACHEL JUDITH DAVIS PSYD
Psychiatry & Neurology (Psychiatry)
2160 S FIRST AVE, LOYOLA UNIVERSITY MEDICAL CENTER 101-1740
MAYWOOD, IL 60153
Cook County (708) 216-9000
FRANCIS HARFORD MD
Surgery
2160 S FIRST AVE, EMS BLDG., 3RD FLOOR
MAYWOOD, IL 60153
Cook County (708) 327-2647
SHERINE HANNA MD
Anesthesiology
2160 S FIRST AVE, BLDG., RM. 3102
MAYWOOD, IL 60153
Cook County (708) 216-8866
HOLLY KRAMER MD
Internal Medicine (Nephrology)
2160 S FIRST AVE, 101-1740 LOYOLA UNIVERSITY MEDICAL CENTER
MAYWOOD, IL 60153
Cook County (708) 216-9000
TRAC XUAN NGHIEM MD
Emergency Medicine
2160 S FIRST AVE, EMS BLDG., RM. 2700
MAYWOOD, IL 60153
Cook County (708) 327-2700
MALIHA J SHAREEF MD
Pediatrics (Neonatal-Perinatal Medicine)
2160 S FIRST AVE, (MAGUIRE CENTER, RM. 3307)
MAYWOOD, IL 60153
Cook County (708) 216-4403
PATRICK FAHEY MD
Internal Medicine (Critical Care Medicine)
2160 S FIRST AVE, LUH-NORTH ENT., RM. 7604
MAYWOOD, IL 60153
Cook County (708) 216-5402
COLEEN NAPOLITANO DPM
Orthopaedic Surgery
2160 S FIRST AVE, (7511 LEMONT RD, DARIEN, IL. 60561)
MAYWOOD, IL 60153
Cook County (630) 985-4989

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 Jack Leya's NPI number?

The NPI number for Jack Leya is 1336128602. It was assigned to this individual provider in the NPPES registry on January 13, 2006.

Where is Jack Leya located?

Jack Leya practices at 2160 S First Ave (fahey Bldg., Rm. 007), Maywood, IL 60153. The listed phone number is (708) 216-3307.

What is Jack Leya's specialty?

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

Is Jack Leya enrolled in Medicare?

Yes. Jack Leya 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.

Is Jack Leya affiliated with any hospitals?

According to CMS data, Jack Leya is affiliated with Fhn Memorial Hospital and Loyola University Medical Center.

When was this NPI record last updated?

The NPPES record for Jack Leya was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 days 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.