DR. RONALD A BLOOM MD
NPI 1659353779
Internal Medicine - Gastroenterology in Glenview, IL

Q: What is Ronald Bloom's NPI number?

The NPI number for Ronald Bloom is 1659353779. It was assigned to this individual provider in the NPPES registry on November 15, 2005.

Q: What is Ronald Bloom's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Ronald Bloom was last updated on April 24, 2017. 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 November 15, 2005PECOS EnrolledAccepts Medicare Assignment

85.09/100

CMS Quality Rating

2501 COMPASS RD, STE 130, GLENVIEW, IL 60026(847) 677-1170(847) 677-1233 Get Directions Write a Review

NPPES record last updated: April 24, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Ronald A Bloom Md NPPES

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

DR. RONALD A BLOOM MD (NPI 1659353779) is an individual gastroenterology provider in Glenview, Illinois, licensed in Illinois (036094612) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1659353779

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. RONALD A BLOOMCredential: MD

Location Address2501 COMPASS RD, STE 130Glenview, IL 60026-8000

Mailing Address2501 Compass Rd, Ste 130Glenview, IL 60026-8000 · (847) 677-1170 · Fax (847) 677-1233

Phone(847) 677-1170

Fax(847) 677-1233

Sole ProprietorNo

Medical School CMSOtherGraduated 1994

Enumeration DateNovember 15, 2005

Last NPPES UpdateApril 24, 2017

✔ NPI 1659353779 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in IL · 036094612

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.

2501 COMPASS RD, Glenview, IL 60026

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Other Identifiers 3

Other100014168Medicare Railroad

Medicare UPINH15806

Medicaid036094612IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.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. Ronald A Bloom 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 ID8820069974

PECOS Enrollment IDI20041202000765

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 Reassignment

Medicare enrollment records show Ronald Bloom reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Illinois Gastroenterology Group, LLC

27 mi

Gastroenterology

745 FLETCHER DRIVE
Elgin, IL 60123

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

NPI 1316277817 (847) 888-1300

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 11

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.

173 services110 patients

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.

65 services65 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.

65 services65 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.

64 services45 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.

62 services61 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.

58 services58 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.

54 services46 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

42 services42 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.

32 services31 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.

24 services24 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

21 services21 patients

Hospital Affiliations CMS Care Compare 2

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

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140010

Location2650 Ridge AveEvanston, IL 60201 · Cook County

Emergency services Birthing friendly

Advocate Lutheran General Hospital

Acute Care Hospitals · Park Ridge, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140223

Location1775 Dempster StPark Ridge, IL 60068 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60026 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.

85.09/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

73.16

Promoting Interoperability

Improvement Activities

Cost

77.98

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.

CARDIOVASCULAR ASSOCIATES OF GLENBROOK AND EVANSTON

Legal Medicine

2501 COMPASS RD, SUITE 100
GLENVIEW, IL 60026

Cook County (847) 869-1499

NEUROLOGY AT THE GLEN, S.C.

Psychiatry & Neurology (Neurology)

2501 COMPASS RD, SUITE 110
GLENVIEW, IL 60026

Cook County (630) 628-9600

DR. KATHRYN S GRACE DPM

Podiatrist (Foot & Ankle Surgery)

2501 COMPASS RD, SUITE 120
GLENVIEW, IL 60026

Cook County (847) 729-9580

DR. GREGORY AARON WALLMAN DO

Internal Medicine

2501 COMPASS RD, SUITE 100
GLENVIEW, IL 60026

Cook County (847) 901-5200

DR. MARTHA LOUISE MILLAR MD

Internal Medicine

2501 COMPASS RD, SUITE 100
GLENVIEW, IL 60026

Cook County (847) 901-5200

DR. FRANK JOSEPH WESCHLER M.D.

Internal Medicine

2501 COMPASS RD, SUITE 100
GLENVIEW, IL 60026

Cook County (847) 901-5200

MICHAEL CHARLES CAUGHRON M.D.

Internal Medicine

2501 COMPASS RD, #100
GLENVIEW, IL 60026

Cook County (847) 901-5200

DR. DOUGLAS R ADLER MD

Internal Medicine (Gastroenterology)

2501 COMPASS RD, SUITE 130
GLENVIEW, IL 60026

Cook County (847) 677-1170

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 Ronald Bloom's NPI number?

The NPI number for Ronald Bloom is 1659353779. It was assigned to this individual provider in the NPPES registry on November 15, 2005.

Where is Ronald Bloom located?

Ronald Bloom practices at 2501 Compass Rd Ste 130, Glenview, IL 60026. The listed phone number is (847) 677-1170.

What is Ronald Bloom's specialty?

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

Is Ronald Bloom enrolled in Medicare?

Yes. Ronald Bloom 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 organization bills Medicare for Ronald Bloom's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Bloom reassigns Medicare benefits to Illinois Gastroenterology Group, LLC (Elgin, IL). The 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 Ronald Bloom's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ronald Bloom accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Ronald Bloom 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 Ronald Bloom affiliated with any hospitals?

According to CMS data, Ronald Bloom is affiliated with Northshore University Healthsystem - Evanston Hospital and Advocate Lutheran General Hospital.

When was this NPI record last updated?

The NPPES record for Ronald Bloom was last updated on April 24, 2017. 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.