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DR. ILYSA R DIAMOND DO
NPI 1356596332
Internal Medicine - Gastroenterology in Oak Park, IL

Active since November 18, 2008PECOS EnrolledAccepts Medicare Assignment
1010 LAKE ST STE 424, OAK PARK, IL 60301(708) 613-4417 Get Directions Write a Review

NPPES record last updated: September 3, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 3, 2024, Jul 30, 2024 (2 updates tracked since 2024).

About Dr. Ilysa R Diamond Do NPPES

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

DR. ILYSA R DIAMOND DO (NPI 1356596332) is an individual gastroenterology provider in Oak Park, Illinois, licensed in Indiana (02007989A) and active in the NPI registry since November 2008. She is enrolled in Medicare PECOS, is affiliated with Loyola Gottlieb Memorial Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1356596332
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameDR. ILYSA R DIAMONDCredential: DO
Location Address1010 LAKE ST STE 424Oak Park, IL 60301-1185
Mailing Address1010 Lake St Ste 424Oak Park, IL 60301-1185 · (708) 613-4417
Phone(708) 613-4417
Sole ProprietorYes
Medical School CMSLake Erie College Of Osteopathic Medicine, ErieGraduated 1998
Enumeration DateNovember 18, 2008
Last NPPES UpdateSeptember 3, 20242 updates tracked since enumeration
NPPES CertifiedSeptember 3, 2024
✔ NPI 1356596332 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 IN · 02007989A✔ Licensed in IL · 036120184
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.
1010 LAKE ST STE 424, Oak Park, IL 60301
Open in Google Maps ↗

Secondary Practice Locations 3

Location 13101 N Harlem Ave # 3115Chicago, IL 60634-4543 · Phone (773) 889-2000
Location 23 Erie CtOak Park, IL 60302-2519 · Phone (708) 613-4417
Location 311104 Parkview Circle Dr Ste 310Fort Wayne, IN 46845-1733 · Phone (260) 266-5230 · Fax (260) 458-5972

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.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

Dr. Ilysa R Diamond 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 ID6204998396
PECOS Enrollment IDI20130429000632, I20240807004414
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 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.

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.
45 services24 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.
45 services21 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.
27 services27 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.
26 services26 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.
24 services24 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
14 services14 patients

Hospital Affiliations CMS Care Compare 3

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

Loyola Gottlieb Memorial Hospital

Acute Care Hospitals · Melrose Park, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140008
Location701 West North AveMelrose Park, IL 60160 · Cook County
Emergency services

Parkview Regional Medical Center

Acute Care Hospitals · Fort Wayne, IN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150021
Location11109 Parkview Plaza DriveFort Wayne, IN 46845 · Allen County
Emergency services Birthing friendly

Parkview Dekalb Hospital

Acute Care Hospitals · Auburn, IN
OwnershipVoluntary non-profit - Private
CMS Certification Number150045
Location1316 E Seventh StAuburn, IN 46706 · De Kalb County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60301 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.

Other Providers at the Same Location NPPES

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

DIAMOND GASTROENTEROLOGY SC
Internal Medicine (Gastroenterology)
1010 LAKE ST STE 424
OAK PARK, IL 60301
Cook County (708) 613-4417

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 Ilysa Diamond's NPI number?

The NPI number for Ilysa Diamond is 1356596332. It was assigned to this individual provider in the NPPES registry on November 18, 2008.

Where is Ilysa Diamond located?

Ilysa Diamond practices at 1010 Lake St Ste 424, Oak Park, IL 60301. The listed phone number is (708) 613-4417.

What is Ilysa Diamond's specialty?

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

Is Ilysa Diamond enrolled in Medicare?

Yes. Ilysa Diamond 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 Ilysa Diamond accept?

Health plans from CareSource list Ilysa Diamond 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 Ilysa Diamond affiliated with any hospitals?

According to CMS data, Ilysa Diamond is affiliated with Loyola Gottlieb Memorial Hospital, Parkview Regional Medical Center and Parkview Dekalb Hospital.

When was this NPI record last updated?

The NPPES record for Ilysa Diamond was last updated on September 3, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.